TOHOKU UNIVERSITY Researchers - Shunsuke Yamamoto

Shunsuke Yamamoto

Section

Graduate School of Engineering

Job title

Assistant Professor

Degree

博士（工学）（京都大学）
修士（工学）（京都大学）

researchmap

https://researchmap.jp/7000005563

J-GLOBAL ID

201301099223895554

ORCID

https://orcid.org/0000-0002-6854-2477

Research History 9

2024/04 - Present

Tohoku University　Graduate School of Engineering　Visiting Associate Professor
2024/04 - Present

Kyoto University　Graduate School of Engineering Department of Polymer Chemistry　Associate Professor
2021/04 - 2024/03

Tohoku University　Graduate School of Engineering Department of Applied Chemistry　Assistant Professor
2020/04 - 2021/03

Tohoku University　Graduate School of Engineering Department of Biomolecular Engineering
2019/03 - 2020/03

University of Cambridge　Department of Engineering　Visiting Researcher
2013/04 - 2020/03

Tohoku University　Institute of Multidisciplinary Research for Advanced Materials
2012/04 - 2013/03

Kyoto University　Graduate School of Engineering
2009/04 - 2012/03

Japan Society for the Promotion of Science
2023/09 -

英国ケンブリッジ大学　化学科　客員研究員

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Committee Memberships 7

応用物理学会　有機分子・バイオエレクトロニクス分科会常任幹事（庶務）

2023/04 - Present
応用物理学会　有機分子・バイオエレクトロニクス分科会常任幹事（広報）

2017/04 - 2019/03
応用物理学会　大分類12 プログラム編集委員

2016/04 - 2019/03
高分子学会　高分子未来塾・ホームページ委員会高分子未来塾支部レンジャー委員

2015/04 - 2019/03
光化学協会　2017年光化学討論会実行委員

2017/09 - 2017/09
応用物理学会　有機分子・バイオエレクトロニクス分科会一般幹事

2015/04 - 2017/03
高分子学会　第64回高分子討論会運営委員

2015/09 - 2015/09

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Professional Memberships 4

THE JAPANESE PHOTOCHEMISTRY ASSOCIATION
THE ADHESION SOCIETY OF JAPAN
THE JAPAN SOCIETY OF APPLIED PHYSICS
THE SOCIETY OF POLYMER SCIENCE, JAPAN

Research Interests 5

Organic Neuromorphic Device
Organic-Inorganic Hybrid Materials
Organic Electronics
Polymer Ultra-thin Films
Polymer Optoelectric Property

Research Areas 3

Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Electronic devices and equipment /
Nanotechnology/Materials / Applied materials /
Nanotechnology/Materials / Polymer materials /

Awards 9

第20回インテリジェント・コスモス奨励賞

2021/04　インテリジェント・コスモス学術振興財団　高分子材料を用いた神経模倣素子の開発
第29回トーキン科学技術賞

2019/03　トーキン科学技術振興財団
2018年度高分子研究奨励賞

2018/05　高分子学会
Best Poster Award

2017/06　9th International Conference on Molecular Electronics and Bioelectronics
第14回船井研究奨励賞

2015/04　船井情報科学振興財団
第36回応用物理学会講演奨励賞

2014/09　応用物理学会
第8回多元物質科学研究奨励賞

2013/12　東北大学多元物質科学研究所
ICSM 2010 Young Researcher Poster Award

2010/07　International Conference on Science and Technology of Synthetic Metals 2010
Young Scientist Award

2007/09　2007 European Conference on Molecular Electronics

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Papers 81

Layer-by-Layer Growth Control of Metal–Organic Framework Thin Films Assembled on Polymer Films Peer-reviewed

Hiroaki Ohara, Shunsuke Yamamoto, Daiki Kuzuhara, Tomoyuki Koganezawa, Hidetoshi Oikawa, Masaya Mitsuishi

ACS Applied Materials & Interfaces　12　(45)　50784-50792　2020/11/11
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acsami.0c13016 　

ISSN：1944-8244

eISSN：1944-8252
Titania Nanofilms from Titanium Complex-Containing Polymer Langmuir–Blodgett Films Peer-reviewed

Shunsuke Yamamoto, Asami Ono, Jun Matsui, Norihisa Hoshino, Tomoyuki Akutagawa, Tokuji Miyashita, Masaya Mitsuishi

Langmuir　36　(35)　10371-10378　2020/09/08
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acs.langmuir.0c01446 　

ISSN：0743-7463

eISSN：1520-5827
Controlling the Neuromorphic Behavior of Organic Electrochemical Transistors by Blending Mixed and Ion Conductors Peer-reviewed

Shunsuke Yamamoto, George G. Malliaras

ACS Applied Electronic Materials　2　(7)　2224-2228　2020/07/28
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acsaelm.0c00203 　
Development of Interfacial Nanoassembly Techniques in Functional Nanomaterials Peer-reviewed

Shunsuke Yamamoto

Polymer Journal　51　(8)　731-738　2019/08/09
Publisher: Springer Science and Business Media {LLC}
DOI： 10.1038/s41428-019-0190-7 　
Carrier Transport Switching of Ferroelectric BTBT Derivative

Kohei Sambe, Takashi Takeda, Norihisa Hoshino, Wakana Matsuda, Kazuki Shimada, Kanae Tsujita, Shingo Maruyama, Shunsuke Yamamoto, Shu Seki, Yuji Matsumoto, Tomoyuki Akutagawa

Journal of the American Chemical Society　2024/03/27

DOI： 10.1021/jacs.4c00514 　
Materials aspects of PEDOT:PSS for neuromorphic organic electrochemical transistors

Shunsuke Yamamoto

Flexible and Printed Electronics　2024/03/01

DOI： 10.1088/2058-8585/ad2daf 　
Multiemission of Ce3+ from a Single Crystallographic Site Induced by Disordering of Ions

Takuya Yasunaga, Makoto Kobayashi, Kenji Oqmhula, Huan Qi, Tom Ichibha, Kenta Hongo, Shunsuke Yamamoto, Ryo Maezono, Masaya Mitsuishi, Minoru Osada, Hideki Kato, Masato Kakihana

Inorganic Chemistry　2024/01/15

DOI： 10.1021/acs.inorgchem.3c03789 　
Mechanism of High Proton Mobility in the Two-Dimensional Nanospace at the Interlayer of a Multilayer Polymer Nanosheet Film

Minami Inoue, Riku Sakashita, Shigehiro Kagaya, Makoto Gemmei-Ide, Yuze Yao, Athchaya Suwansoontorn, Shusaku Nagano, Shunsuke Yamamoto, Masaya Mitsuishi, Yuki Nagao, Jun Matsui

The Journal of Physical Chemistry C　2023/12/21

DOI： 10.1021/acs.jpcc.3c06848 　
Ferroelectric Organic Semiconductor: [1]Benzothieno[3,2-b][1]benzothiophene-Bearing Hydrogen-Bonding −CONHC14H29 Chain

Kohei Sambe, Takashi Takeda, Norihisa Hoshino, Wakana Matsuda, Riku Miura, Kanae Tsujita, Shingo Maruyama, Shunsuke Yamamoto, Shu Seki, Yuji Matsumoto, Tomoyuki Akutagawa

ACS Applied Materials & Interfaces　2023/12/20

DOI： 10.1021/acsami.3c14476 　
Dip Coating of Water-Resistant PEDOT:PSS Films Based on Physical Crosslinking

Shunsuke Yamamoto, Ryusei Miyako, Ryota Maeda, Yuya Ishizaki, Masaya Mitsuishi

2023/07/04
Publisher: American Chemical Society (ACS)
DOI： 10.26434/chemrxiv-2023-x7qmd 　

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Water-resistant poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films are valuable in biomedical applications; however, they typically require crosslinkers to stabilize the films, which can introduce undesired aggregation or phase separation reactions. Herein, we developed a dipping-based processes to prepare PEDOT:PSS films on non-planar surfaces without crosslinker. Sequential soaking of a dip-coated PEDOT:PSS film in ethanol and water imparted water resistance to the film. Microscopic and spectroscopic techniques were used to monitor the process and confirmed that the ethanol soaking eluted the excess PSS from the film bulk, which stabilized the film prior to the water-soaking process. The obtained films acted as conductors and semiconductors on curved surfaces, including three-dimensional (3D)-printed objects. A film deposited on a curved surface was successfully applied as the channel layer in a neuromorphic organic electrochemical transistor. This approach will enable integrated bioelectronic and neuromorphic applications that can be readily deployed for facile prototyping.
Polymer‐based neuromorphic devices: resistive switches and organic electrochemical transistors

Shunsuke Yamamoto

Polymer International　2023/07

DOI： 10.1002/pi.6520 　
Controlling Resistive Switching Modes of Ferrocene-Containing Polyelectrolyte Layer-by-Layer Nanofilms

Yuya Ishizaki, Akito Watanabe, Shunsuke Yamamoto, Masaya Mitsuishi

ACS Applied Electronic Materials　5　(7)　3957-3964　2023/06/29
Publisher: American Chemical Society (ACS)
DOI： 10.1021/acsaelm.3c00644 　

ISSN：2637-6113

eISSN：2637-6113
Operando NMR electrochemical gating studies of ion dynamics in PEDOT:PSS

Dongxun Lyu, Yanting Jin, Pieter C. M. M. Magusin, Simone Sturniolo, Evan Wenbo Zhao, Shunsuke Yamamoto, Scott T. Keene, George G. Malliaras, Clare P. Grey

Nature Materials　2023/06

DOI： 10.1038/s41563-023-01524-1 　
Preparation of Resilient Organic Electrochemical Transistors Based on Blend Films with Flexible Crosslinkers

Shuhei Kindaichi, Ryosuke Matsubara, Atsushi Kubono, Shunsuke Yamamoto, Masaya Mitsuishi

2023/04/25

DOI： 10.26434/chemrxiv-2023-zztqm 　
Monolayer Integration of Organic Semiconductors

Shunsuke Yamamoto

Reference Module in Materials Science and Materials Engineering　2023
Publisher: Elsevier
DOI： 10.1016/b978-0-12-819728-8.00078-4 　
Wettability Patternable Hybrid Polymer Films Based on TiO2 and Fluorinated Polymer for Bioelectronics Applications

Shunsuke Yamamoto, Hiroyuki Kai

Advanced Materials Interfaces　2022/12

DOI： 10.1002/admi.202201736 　
Correlation between Transient Response and Neuromorphic Behavior in Organic Electrochemical Transistors

Shunsuke Yamamoto, Anastasios G. Polyravas, Sanggil Han, George G. Malliaras

Advanced Electronic Materials　8　(4)　2101186-2101186　2022/04
Publisher: Wiley
DOI： 10.1002/aelm.202101186 　
Semicrystalline Structural Correlations of Conductivity in Conjugated Polymer Thin Films Surface-Doped by the Vapor Phase Method

Kai Futamata, Tsunenobu Onodera, Shunsuke Yamamoto, Masaya Mitsuishi, Hidetoshi Oikawa

ACS Applied Electronic Materials　4　(2)　755-760　2022/02/22
Publisher: American Chemical Society (ACS)
DOI： 10.1021/acsaelm.1c01150 　

ISSN：2637-6113

eISSN：2637-6113
Hybrid 3D/Inkjet‐Printed Organic Neuromorphic Transistors Peer-reviewed

Tanyaradzwa N. Mangoma, Shunsuke Yamamoto, George G. Malliaras, Ronan Daly

Advanced Materials Technologies　7　(2)　2000798-2000798　2022/02
Publisher: Wiley
DOI： 10.1002/admt.202000798 　
Flexible ultraviolet detector with robust ZnO nanoparticle nanoassemblies on catechol‐functionalized polysiloxane nanofilms Invited Peer-reviewed

Yida Liu, Huie Zhu, Akira Watanabe, Shunsuke Yamamoto, Tokuji Miyashita, Masaya Mitsuishi

Journal of Applied Polymer Science　138　(37)　50947-50947　2021/08/05
Publisher: Wiley
DOI： 10.1002/app.50947 　

ISSN：0021-8995

eISSN：1097-4628
pH-Responsive Ultrathin Nanoporous SiO2 Films for Selective Ion Permeation Peer-reviewed

Yuya Ishizaki, Shunsuke Yamamoto, Tokuji Miyashita, Masaya Mitsuishi

Langmuir　37　(18)　5627-5634　2021/05/11
Publisher: American Chemical Society (ACS)
DOI： 10.1021/acs.langmuir.1c00486 　

ISSN：0743-7463

eISSN：1520-5827
Microfabricated Ion‐Selective Transistors with Fast and Super‐Nernstian Response Peer-reviewed

Sanggil Han, Shunsuke Yamamoto, Anastasios G. Polyravas, George G. Malliaras

Advanced Materials　2004790-2004790　2020/12/29
Publisher: Wiley
DOI： 10.1002/adma.202004790 　
Formation of Perpendicularly Aligned Sub-10 nm Nanocylinders in Poly(N-dodecylacrylamide-b-ethylene glycol) Block Copolymer Films by Hierarchical Phase Separation Peer-reviewed

Kohei Matsunaga, Wataru Kukai, Manabu Ishizaki, Masato Kurihara, Shunsuke Yamamoto, Masaya Mitsuishi, Hiroshi Yabu, Shusaku Nagano, Jun Matsui

Macromolecules　53　(21)　9601-9610　2020/11/10
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acs.macromol.0c00838 　

ISSN：0024-9297

eISSN：1520-5835
Controlled Ion Permeability of Ultrathin Nanoporous SiO2 Films from Silsesquioxane-Containing Polymer Nanosheets Peer-reviewed

Yuya Ishizaki, Shunsuke Yamamoto, Tokuji Miyashita, Masaya Mitsuishi

ACS Applied Nano Materials　3　(8)　7454-7461　2020/08/28
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acsanm.0c01048 　

ISSN：2574-0970

eISSN：2574-0970
Synthesis and self-assembly nanostructures of pyrene-containing amphiphilic fluorinated copolymers and their oxygen sensing application Peer-reviewed

Yongjoon Im, Yu Gao, Huie Zhu, Shunsuke Yamamoto, Jun Matsui, Tokuji Miyashita, Masaya Mitsuishi

Molecular Crystals and Liquid Crystals　704　(1)　81-88　2020/06/12

DOI： 10.1080/15421406.2020.1741806 　

ISSN：1542-1406

eISSN：1563-5287

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© 2020 Taylor & Francis Group, LLC. We synthesized pyrene-containing amphiphilic fluorinated copolymers p(C7F15MAA/PyMMA)s through free radical polymerization. The pyrene composition ratio was readily tuned from 0.6 to 3 mol% with different monomer feeding ratios, designated as p(C7F15MAA/PyMMA0.6) and p(C7F15MAA/PyMMA3). p(C7F15MAA/PyMMA) nanoparticle films were prepared by dropcasting copolymer solutions onto substrates with the mixture of AK-225 and acetic acid. The copolymer nanoparticle film surfaces exhibited superhydrophobic character with a water contact angle of greater than 160° and low surface free energy (< 19 mN m−1). The emission from the p(C7F15MAA/PyMMA0.6) nanoparticle film was dominated with monomeric emission, while that from the p(C7F15MAA/PyMMA3) nanoparticle film showed mainly excimer emission. The dissolved oxygen sensing performance of the nanoparticle films was also investigated in terms of the different emission modes.
Nanophase Separation of Poly(N-alkyl acrylamides): The Dependence of the Formation of Lamellar Structures on Their Alkyl Side Chains

Kazuki Ebata, Yuki Hashimoto, Shunsuke Yamamoto, Masaya Mitsuishi, Shusaku Nagano, Jun Matsui

Macromolecules　52　(24)　9773-9780　2019/12/24
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acs.macromol.9b01817 　

ISSN：0024-9297

eISSN：1520-5835
Correction to “Biomimetic Polyelectrolytes Based on Polymer Nanosheet Films and Their Proton Conduction Mechanism” Peer-reviewed

Mayu Tsukamoto, Kazuki Ebata, Hiroshi Sakiyama, Shunsuke Yamamoto, Masaya Mitsuishi, Tokuji Miyashita, Jun Matsui

Langmuir　35　(49)　16400-16400　2019/12/10
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acs.langmuir.9b03559 　
Cyclosiloxane polymer bearing dynamic boronic acid: synthesis and bottom-up nanocoating Peer-reviewed

Shunsuke Yamamoto

Polymer Chemistry　10　(38)　5228-5235　2019/09/13
Publisher: Royal Society of Chemistry ({RSC})
DOI： 10.1039/c9py00855a 　

ISSN：1759-9962

eISSN：1759-9962

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Boronic acid-containing polycyclosiloxane showed unique self-assembly nanofilm formation (6 nm film thickness) on various substrates and provided film-based metal ion sensor capability through dynamic covalent bonding.
Dibenzoarsepins: Planarization of 8π‐Electron System in the Lowest Singlet Excited State Peer-reviewed

Ikuo Kawashima, Hiroaki Imoto, Masatoshi Ishida, Hiroyuki Furuta, Shunsuke Yamamoto, Masaya Mitsuishi, Susumu Tanaka, Toshiki Fujii, Kensuke Naka

Angewandte Chemie　131　(34)　11812-11816　2019/08/19
Publisher: Wiley
DOI： 10.1002/ange.201904882 　
Dibenzoarsepins: Planarization of 8π-Electron System in the Lowest Singlet Excited State Peer-reviewed

Shunsuke Yamamoto

Angewandte Chemie International Edition　58　(34)　11686-11690　2019/08/19

DOI： 10.1002/anie.201904882 　

ISSN：1433-7851

eISSN：1521-3773

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© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Dibenzo[b,f]arsepins possessing severely distorted cores compared to those of other heteropins were synthesized. These derivatives exhibited dual photoluminescence in the green-to-red region (500–700 nm) and the near-ultraviolet region (<380 nm), which could be attributed to the planarization of the arsepin core in the lowest singlet excited (S1) state. The computational approach for the assessment of the aromatic indices revealed that the dibenzoarsepins studied show aromaticity (8π system) in the S1 states in line with Baird's rule. The lone pair electrons of the arsenic atoms play a crucial role in the aromaticity in the S1 states.
Cellulose Nanofiber Nanosheet Multilayers by the Langmuir–Blodgett Technique Peer-reviewed

M. Mahbubul Bashar, Hiroaki Ohara, Huie Zhu, Shunsuke Yamamoto, Jun Matsui, Tokuji Miyashita, Masaya Mitsuishi

Langmuir　35　(24)　8052-8059　2019/06/18
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acs.langmuir.9b01440 　
Synthesis of Ba1−Sr YSi2O5N and discussion based on structure analysis and DFT calculation Peer-reviewed

Shunsuke Yamamoto

Journal of Solid State Chemistry　276　266-271　2019/05/11
Publisher: ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI： 10.1016/j.jssc.2019.05.012 　

ISSN：0022-4596

eISSN：1095-726X

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Cation substitution for inorganic solid materials is a practical approach to control their functions. Here, synthesis, structure analysis, density functional theory (DFT) calculation of novel oxynitrides Ba1-xSrxYSi2O5N, and investigation of their photoluminescence properties with Eu2+- or Ce3+-tactivator were conducted. Single crystal and powder X-ray analyses revealed that Ba1-xSrxYSi2O5N were formed at x <= 0.75 and they were isotypic while the synthesis of SrYSi2O5N (x = 1) was not achieved by any synthesis conditions examined. Based on phonon calculation, it was concluded that the synthesis of SrYSi2O5N with the isostructure to BaYSi2O5N was impossible due to the thermodynamical unstability. Substitution of Ba with Sr decreased the average bond length of AE-(O,N) (AE = Ba and Sr) and increased distortion of AE sites. On the other hand, coordination environments of Y sites were rarely affected by the substitution. As a result, redshift and broadening of emission spectra for Eu-doped samples were observed, whereas there was almost no spectral change in Ce-doped samples.
Self Formed Anisotropic Proton Conductive Polymer Film by Nanophase Separation Peer-reviewed

Shunsuke Yamamoto

Journal of The Electrochemical Society　166　(9)　B3218-B3222　2019/05/06
Publisher: ELECTROCHEMICAL SOC INC
DOI： 10.1149/2.0331909jes 　

ISSN：1945-7111

eISSN：1945-7111

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An anisotropic proton conductive polymer film was prepared from poly(decylacrylamide-co-12-acrylamidododecanoic acid). The polymer film was prepared on a solid substrate by spin coating and the structure was analyzed by X-ray diffraction measurement. The initial polymer film exhibited featureless diffraction, which indicates that the film was amorphous. On the other hand, when the film was annealed at 60 degrees C under 98% RH, the film structure was converted from amorphous to highly oriented lamellar structure. The proton conductivities of the film parallel and perpendicular to the substrate surface were studied by impedance measurement. The conductivity at the parallel direction increase whereas that at the perpendicular direction decrease with measurement time. This is because the film formed a lamellar structure in-situ during the proton conductivity measurement. In other words, the anisotropic conduction state can be reached as long as the proton conductivity measurements were carried out. (c) The Author(s) 2019. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.
Highly carboxylated and crystalline cellulose nanocrystals from jute fiber by facile ammonium persulfate oxidation Peer-reviewed

Bashar, M. Mahbubul, Zhu, Huie, Yamamoto, Shunsuke, Mitsuishi, Masaya

Cellulose　26　(6)　3671-3684　2019/03/09

DOI： 10.1007/s10570-019-02363-7 　
Biomimetic Polyelectrolytes Based on Polymer Nanosheet Films and Their Proton Conduction Mechanism

Mayu Tsuksamoto, Kazuki Ebata, Hiroshi Sakiyama, Shunsuke Yamamoto, Masaya Mitsuishi, Tokuji Miyashita, Jun Matsui

Langmuir　35　(9)　3302-3307　2019/03/05
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acs.langmuir.8b04079 　
Molecular-weight dependence of the formation of highly ordered lamellar structures of poly(N-dodecyl acrylamide) by humid annealing Peer-reviewed

Kazuki Ebata, Yuki Hashimoto, Kohei Ebara, Mayu Tsukamoto, Shunsuke Yamamoto, Masaya Mitsuishi, Shusaku Nagano, Jun Matsui

Polymer Chemistry　10　(7)　835-842　2019/01/18
Publisher: Royal Society of Chemistry ({RSC})
DOI： 10.1039/C8PY01660G 　

ISSN：1759-9954

eISSN：1759-9962

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Highly oriented lamellar films of poly(<italic>N</italic>-dodecylacrylamide) with high molecular weights were formed by nanosegregation between alkyl side chains and a water-adsorbed main chain.
Ce4+-Based Compounds Capable of Photoluminescence by Charge Transfer Excitation under Near-Ultraviolet–Visible Light International-journal Peer-reviewed

Dawei Wen, Hideki Kato, Makoto Kobayashi, Shunsuke Yamamoto, Masaya Mitsuishi, Kotaro Fujii, Masatomo Yashima, Masato Kakihana

Inorganic Chemistry　57　(23)　14524-14531　2018/12/03
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acs.inorgchem.8b01900 　

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Ce4+-based charge transfer phosphor is not common and has been reported mainly in Sr2CeO4 with an excitation band peaking at ∼290 nm, mismatching with the near-ultraviolet light emitting diodes. Herein, we report a new series of Ce4+-based compounds Sr4.4Ce2.6REZnO12 (RE = Y, La, and Eu) capable of photoluminescence induced by O2--Ce4+ charge transfer excitation under near-ultraviolet-visible light. The crystal structure of Sr4.4Ce2.6EuZnO12 was determined by single crystal X-ray diffraction. The RE = La and Y samples were confirmed to be iso-structure compounds of the RE = Eu sample by powder X-ray diffraction. By introducing highly covalent Zn2+-O2- bonds into the framework, the Ce4+-O2- bonds are lengthened due to the effect of the Ce4+-O2--Zn2+ stretch. The lengthened Ce4+-O2- bond weakens the repulsion of the electrons between Ce4+ and O2-, thereby lowering the charge transfer energy to the visible light region. Incorporation of Eu3+ into the present compounds realized red emission under near-ultraviolet-visible excitation by the O2--Ce4+ charge transfer followed by energy transfer to Eu3+.
Preparation, Electronic and Liquid Crystalline Properties of Electron-Accepting Azaacene Derivatives Peer-reviewed

Takashi Takeda, Tomohiro Ikemoto, Shunsuke Yamamoto, Wakana Matsuda, Shu Seki, Masaya Mitsuishi, Tomoyuki Akutagawa

ACS Omega　3　(10)　13694-13703　2018/10/31
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acsomega.8b01943 　

ISSN：2470-1343

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A series of electron-accepting azaacene-type materials 1-4 with different kinds and degrees of intermolecular interactions were synthesized. Simple modification of the terminal substituents significantly modulated the photophysical and electrochemical properties. The degree of weak intermolecular interaction determined the emergence of a liquid crystalline (LC) phase for each compound. Dipole-dipole interaction, p-p interaction, and van der Waals interaction all contributed to stabilize the LC phase of 1 and 2. The introduction of strong hydrogen bonding interaction enabled the formation of a highly ordered LC phase in 4. Charge-transport properties of 1, 2, and 4 were also investigated.
As-Heteropentacenes: An Experimental and Computational Study on a Novel Class of Heteroacenes Peer-reviewed

Hiroaki Imoto, Toshiki Fujii, Susumu Tanaka, Shunsuke Yamamoto, Masaya Mitsuishi, Takashi Yumura, Kensuke Naka

Organic Letters　20　(18)　5952-5955　2018/09/21
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acs.orglett.8b02660 　
High-Density and Monolayer-Level Integration of π-Conjugated Units: Amphiphilic Carbazole Homopolymer Langmuir–Blodgett Films Peer-reviewed

Shunsuke Yamamoto, Nanae Nishina, Jun Matsui, Tokuji Miyashita, Masaya Mitsuishi

Langmuir　34　(36)　10491-10497　2018/09/11
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acs.langmuir.8b01694 　
Two-Dimensional Proton Conduction in Biomimetic Polymer Electrolytes Prepared the Polymer Nanosheet Multilayer Film

Mayu Tsukamoto, Jun Matsui, Shunsuke Yamamoto, Tokuji Miyashita, Masaya Mitsuishi

ECS Meeting Abstracts　2018/07/13
Publisher: The Electrochemical Society
DOI： 10.1149/MA2018-03/4/256 　
Synthesis and Porous SiO2 Nanofilm Formation of the Silsesquioxane-Containing Amphiphilic Block Copolymer Peer-reviewed

Yuya Ishizaki, Shunsuke Yamamoto, Tokuji Miyashita, Masaya Mitsuishi

Langmuir　34　(27)　8007-8014　2018/07/10
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acs.langmuir.8b01114 　

ISSN：0743-7463

eISSN：1520-5827
Resistive switching of organic–inorganic hybrid devices of conductive polymer and permeable ultra-thin SiO2 films Peer-reviewed

Shunsuke Yamamoto, Takahisa Kitanaka, Tokuji Miyashita, Masaya Mitsuishi

Nanotechnology　29　(26)　2018/06/29
Publisher: Institute of Physics Publishing
DOI： 10.1088/1361-6528/aabdc6 　

ISSN：1361-6528 0957-4484

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We propose a resistive switching device composed of conductive polymer (PEDOT:PSS) and SiO2 ultra-thin films. The SiO2 film was fabricated from silsesquioxane polymer nanosheets as a resistive switching layer. Devices with metal (Ag or Au)|SiO2|PEDOT:PSS architecture show good resistive switching performance with set-reset voltages as low as several hundred millivolts. The device properties and the working mechanism were investigated by varying the electrode material, surrounding atmosphere, and SiO2 film thickness. Results show that resistive switching is based on water and ion migration at the PEDOT:PSS|SiO2 interface.
Thermoresponsive Amphipathic Fluorescent Organic Liquid Peer-reviewed

Takashi Takeda, Shunsuke Yamamoto, Masaya Mitsuishi, Tomoyuki Akutagawa

The Journal of Physical Chemistry C　122　(17)　9593-9598　2018/05/03
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acs.jpcc.8b01131 　

ISSN：1932-7455 1932-7447

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We herein report a thermoresponsive amphipathic fluorescent organic liquid, tetraethylene glycol (TEG) ester-substituted tetraphenylethylene (TPE), 1, as a new class of functional organic material. AIE fluorescence of 1 could be modulated by controlling the temperature. The introduction of hydrophilic PEG chains induced the formation of a uniform fluorescent colloidal supramolecular structure in H2O. This colloidal structure of 1 also showed temperature-dependent fluorescence due to its motility in the supramolecular structure and the collapse/precipitation of the colloid of 1.
Fully Conjugated Porphyrin Glass: Collective Light-Harvesting Antenna for Near-Infrared Fluorescence beyond 1 μm Peer-reviewed

Mitsuhiko Morisue, Shun Omagari, Ikuya Ueno, Takayuki Nakanishi, Yasuchika Hasegawa, Shunsuke Yamamoto, Jun Matsui, Sono Sasaki, Takaaki Hikima, Shinichi Sakurai

ACS Omega　3　(4)　4466-4474　2018/04/30
Publisher: American Chemical Society
DOI： 10.1021/acsomega.8b00566 　

ISSN：2470-1343

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Expanded π-systems with a narrow highest occupied molecular orbital-lowest unoccupied molecular orbital band gap encounter deactivation of excitons due to the "energy gap law" and undesired aggregation. This dilemma generally thwarts the near-infrared (NIR) luminescence of organic π-systems. A sophisticated cofacially stacked π-system is known to involve exponentially tailed disorder, which displays exceptionally red-shifted fluorescence even as only a marginal emission component. Enhancement of the tail-state fluorescence might be advantageous to achieve NIR photoluminescence with an expected collective light-harvesting antenna effect as follows: (i) efficient light-harvesting capacity due to intense electronic absorption, (ii) a long-distance exciton migration into the tail state based on a high spatial density of the chromophore site, and (iii) substantial transmission of NIR emission to circumvent the inner filter effect. Suppression of aggregation-induced quenching of fluorescence could realize collective light-harvesting antenna for NIR-luminescence materials. This study discloses an enhanced tail-state NIR fluorescence of a self-standing porphyrin film at 1138 nm with a moderate quantum efficiency based on a fully π-conjugated porphyrin that adopts an amorphous form, called "porphyrin glass".
Catechol-Functionalized Polysiloxane Nanocoating for Surface Enhanced Raman Scattering on a Grating Surface Peer-reviewed

Liu, Yida, Demirci, Ali, Ohara, Hiroaki, Zhu, Huie, Yamamoto, Shunsuke, Watanabe, Akira, Miyashita, Tokuji, Tawa, Keiko, Nishii, Junji, Mitsuishi, Masaya

International Journal of the Society of Materials Engineering for Resources　23　(1)　84-87　2018/04
Circular Polarized Luminescence of Hydrogen-Bonded Molecular Assemblies of Chiral Pyrene Derivatives Peer-reviewed

Hayato Anetai, Takashi Takeda, Norihisa Hoshino, Yasuyuki Araki, Takehiko Wada, Shunsuke Yamamoto, Masaya Mitsuishi, Hiromu Tsuchida, Tomoki Ogoshi, Tomoyuki Akutagawa

The Journal of Physical Chemistry C　122　(11)　6323-6331　2018/03/22
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acs.jpcc.7b12747 　

ISSN：1932-7455 1932-7447

eISSN：1932-7455

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The absorption and fluorescence spectra of chiral alkylamide-substituted pyrene derivatives (R-1 and S-1) in the solution phase were consistent with the formation of N-H···Oâ• hydrogen-bonded helical π-stacked one-dimensional (1D) supramolecules (R-1)n and (S-1)n in methylcyclohexane (MCH), toluene, chloroform (CHCl3), and tetrahydrofuran (THF) the π-stacked structures and aggregation number (n) were governed by the concentration (c) and solvent polarity. The aggregation of (R-1)n and (S-1)n in MCH and toluene was much greater than that in THF and CHCl3, and excimer emission of excited-state (R-1)n ∗ and (S-1)n ∗ supramolecules with n ≥ 2 was observed in all solvents. Interestingly, the circular polarized luminescence (CPL) spectra of (R-1)n ∗ and (S-1)n ∗ revealed a glum value of 0.03 in MCH at c &gt 1 × 10-6 M. Circular dichroism and CPL spectra revealed the formation of hydrogen-bonded helical 1D supramolecular assemblies in the ground and excited states. The helicities of the 1D supramolecular assemblies of (R-1)n and (S-1)n in CHCl3 were inverted as compared to those in MCH and THF. The solvent polarity and concentration were sensitive to the π-stacked structure and helical configuration of the N-H···Oâ• hydrogen-bonded 1D supramolecular assemblies.
Resistive non-volatile memories fabricated with poly(vinylidene fluoride)/poly(thiophene) blend nanosheets Peer-reviewed

Huie Zhu, Shunsuke Yamamoto, Jun Matsui, Tokuji Miyashita, Masaya Mitsuishi

RSC Advances　8　(15)　7963-7968　2018
Publisher: Royal Society of Chemistry
DOI： 10.1039/C8RA01143E 　

ISSN：2046-2069

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Ferroelectric poly(vinylidene fluoride)/semiconductive polythiophene (P3CPenT) blend monolayers were developed at varying blend ratios using the Langmuir-Blodgett technique. The multilayered blend nanosheets show much improved surface roughness that is more applicable for electronics applications than spin-cast films. Because of the precisely controllable bottom-up construction, semiconductive P3CPenT were well dispersed into the ferroelectric PVDF matrix. Moreover, the ferroelectric matrix contains almost 100% β crystals: a polar crystal phase responsible for the ferroelectricity of PVDF. Both the good dispersion of semiconductive P3CPenT and the outstanding ferroelectricity of the PVDF matrix in the blend nanosheets guaranteed the success of ferroelectric organic non-volatile memories based on ferroelectricity-manipulated resistive switching with a fresh high ON/OFF ratio and long endurance to 30 days.
Acid-Group-Content-Dependent Proton Conductivity Mechanisms at the Interlayer of Poly(N-dodecylacrylamide-co-acrylic acid) Copolymer Multilayer Nanosheet Films Peer-reviewed

Takuma Sato, Mayu Tsukamoto, Shunsuke Yamamoto, Masaya Mitsuishi, Tokuji Miyashita, Shusaku Nagano, Jun Matsui

Langmuir　33　(45)　12897-12902　2017/11
Publisher: American Chemical Society ({ACS})
DOI： 10.1021/acs.langmuir.7b03160 　

ISSN：0743-7463

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The effect of the content of acid groups on the proton conductivity at the interlayer of polymer-nanosheet assemblies was investigated. For that purpose, amphiphilic poly(N-dodecylacrylamide-co-acrylic acid) copolymers [p-(DDA/AA)] with varying contents of AA were synthesized by free radical polymerization. Surface pressure (70 area (A) isotherms of these copolymers indicated that stable polymer monolayers are formed at the air/water interface for AA mole fraction (n) <= 0.49. In all cases, a uniform dispersion of the AA groups in the polymer monolayer was observed. Subsequently, polymer monolayers were transferred onto solid substrates using the Langmuir-Blodgett (LB) technique. X-ray diffraction (XRD) analyses of the multilayer films showed strong Bragg diffraction peaks, suggesting a highly uniform lamellar structure for the multilayer films. The proton conductivity of the multilayer films parallel to the direction of the layer planes were measured by impedance spectroscopy, which revealed that the conductivity increased with increasing values of n. Activation energies for proton conduction of similar to 0.3 and 0.42 eV were observed for n >= 0.32 and n = 0.07, respectively. Interestingly, the proton conductivity of a multilayer film with n = 0.19 did not follow the Arrhenius equation. These results were interpreted in terms of the average distance between the AA groups (l(AA)), and it was concluded that, for n >= 0.32, an advanced 2D hydrogen bonding network was formed, while for n = 0.07, 1 is too long to form such hydrogen bonding networks. The I-AA for n = 0.19 is intermediate to these extremes, resulting in the formation of hydrogen bonding networks at low temperatures, and disruption of these networks at high temperatures due to thermally induced motion. These results indicate that a high proton conductivity with low activation energy can be achieved, even under weakly acidic conditions, by arranging the acid groups at an optimal distance.
フッ素系両親媒性高分子を利用した微粒子薄膜の作製と機能

三ツ石方也, 高宇, 朱慧娥, 山本俊介, 宮下徳治

高分子微粒子ハンドブック　230-236　2017/07

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Site occupancy and luminescence properties of Ca(3)Ln(AlO)(3)(BO3)(4):Ce3+,Tb3+,Mn2+ (Ln = Y, Gd) Peer-reviewed

Wen, Dawei, Kato, Hideki, Kobayashi, Makoto, Yamamoto, Shunsuke, Mitsuishi, Masaya, Kakihana, Masato

Journal of Materials Chemistry C　5　(18)　4578-4583　2017
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/c7tc00941k 　

ISSN：2050-7526

eISSN：2050-7534

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In this work, novel single-phase white emitting Ca(3)Ln(AlO)(3)(BO3)(4): Ce3+, Tb3+, Mn2+ (Ln = Y and Gd) phosphors were synthesized by a conventional solid-state reaction method. The crystal structure and photoluminescence properties were investigated for the first time. The structure of Ca(3)Ln(AlO) (3)(BO3)(4) was formed by AlO6 octahedral chains interconnected by BO3 triangles. Along the [001] direction, the Ca/Ln cations fill in the trigonal and hexagonal tunnels. For Ca(3)Ln(AlO)(3)(BO3)(4): Ce3+ and Ca(3)Ln(AlO)(3)(BO3)(4): Mn2+, large Ce3+ preferred to occupy the smaller coordination site, while small Mn2+ occupied the larger coordination site, which was explained by the space hindrance. Due to the cation disorder, the local environment of Ce3+ was complicated and the emission band was extremely broad. In Ca(3)Ln(AlO) (3)(BO3)(4), the emission color can be tuned from blue to green or red by tuning the Ce3+-Tb3+ or Ce3+-Mn2+ concentration based on energy transfer. Thus, the combination of blue, green and red emitting Ce3+, Tb3+ and Mn2+ generated white emission.
Superhydrophobic surfaces with fluorinated cellulose nanofiber assemblies for oil-water separation Peer-reviewed

Bashar, M. Mahbubul, Zhu, Huie, Yamamoto, Shunsuke, Mitsuishi, Masaya

Rsc Advances　7　(59)　37168-37174　2017
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/c7ra06316d 　

ISSN：2046-2069

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A Cellulose nanofiber (CNF) is an amazing nanomaterial produced from ubiquitous sources with outstanding mechanical, chemical, and barrier properties. This report describes facile functionalization of CNF with trichloro(1H, 1H, 2H, 2H-heptadecafluorodecyl) silane (THFS). The paste form CNF was solvent exchanged from initial water to AK-225 (a mixture of 3,3-dichloro-1,1,1,2,2-pentafluoropropane and 1,3-dichloro-1,1,2,2,3-pentafluoropuropane) before surface modification with THFS. The modified CNFs were dispersed uniformly in AK-225. The CNF film, which was prepared using simple drop casting, showed a superhydrophobic surface with a water contact angle of 160 degrees and oleophilicity with a hexane contact angle of less than 35 degrees. The modified CNF assembly is thermally stable, optically transparent and resistant to corrosive environment (acidic, basic and seawater solutions). The separation of oil and water mixtures was demonstrated using steel mesh coated with modified CNF. Separation efficiency greater than 99% was achieved by simple gravitational force for hydrocarbons and organic solvents. The as-prepared mesh can be used repeatedly more than 50 times with the same efficiency as the initial state.
Regioselective Synthesis of Eight-Armed Cyclosiloxane Amphiphile for Functional 2D and 3D Assembly Motifs Peer-reviewed

Zhu, Huie, Akkus, Buket, Gao, Yu, Liu, Yida, Yamamoto, Shunsuke, Matsui, Jun, Miyashita, Tokuji, Mitsuishi, Masaya

Acs Applied Materials & Interfaces　9　(34)　28144-28150　2017
Publisher: AMER CHEMICAL SOC
DOI： 10.1021/acsami.7b07331 　

ISSN：1944-8244

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A crystalline tetramethylcydotetrasiloxane (TMCS)-derived amphiphile was regioselectively synthesized with eight peripheral hydrophilic amide groups and hydrophobic dodecyl chains by Pt(0)-catalyzed hydrosilylation and amidation reactions. The as-synthesized materials showed ordered lamellar structure formation in the powder form. It also exhibits superior two-dimensional (2D) monolayer formation properties at the air water interface with unexpectedly high collapse surface pressure and elastic modulus. The monolayers act as two-dimensional building blocks with finely controllable thickness on a several nanometer scale irrespective of the substrate type and properties. The amphiphile forms nanofibers spontaneously by good poor solvent strategies, which contributes to porous three-dimensional (3D) structures possessing superhydrophobic surface wettability.
Amphiphilic acrylamide block copolymer: RAFT block copolymerization and monolayer behaviour Peer-reviewed

Shunsuke Yamamoto, Tokuji Miyashita, Masaya Mitsuishi

RSC Advances　7　(71)　44954-44960　2017
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/C7RA06788G 　

ISSN：2046-2069

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RAFT polymerization of acrylamide monomers with long alkyl sidechains was studied for application to block copolymer synthesis and nanoscale assembly using the Langmuir-Blodgett technique. Controlled radical polymerization was demonstrated by optimizing the chain transfer agent (CTA) concentration: amphiphilic acrylamide block copolymer, poly(N-dodecylacrylamide)-block-poly(N-tertpentylacrylamide) (pDDA-b-ptPA) was obtained with high molecular weight (1.3 x 104) and narrow molecular distribution (M-w/ M-n x 1.4). The diblock copolymer formed a stable monolayer at the air-water interface under a surface pressure of 30 mN m(-1), but the presence of the junction between pDDA and ptPA affected the monolayer mechanical properties at higher surface pressures. Results provide insight into the two-dimensional self-assembly of amphiphilic block copolymers consisting of molecular-level amphiphilic block components.
Observation of self-polarization in BSA protected Au-20 clusters Peer-reviewed

Swain, D. K., Narzary, A., Singh, A. K., Chandra, A., Nagasawa, T., Yamamoto, S., Mitsuishi, M., Rath, S.

Nanotechnology　28　(44)　445704　2017
Publisher: IOP PUBLISHING LTD
DOI： 10.1088/1361-6528/aa8718 　

ISSN：0957-4484

eISSN：1361-6528

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Bovine serum albumin (BSA)-protected gold clusters (atomicity similar to 20), prepared using a wet chemical route, show strong dipolar radiative transition with a gap energy of 1.93 eV due to the high oscillator strength, as confirmed by the emission studies. Self-arrangement of the clusters with fixed atomicity yields a low dispersive dielectric and electric self-polarization nature. The electrical hysteresis loop measurements returned a remanent polarization of 0.05 mu C cm(-2), which can be correlated with the dipolar orientation (activation energy similar to 45.32 meV), originating from the structure-dependent deformation of the charge density.
Angle-resolved X-ray photoelectron spectroscopy study of poly(vinylidene fluoride)/poly(N-dodecylacrylamide) Langmuir-Blodgett nanofilms Peer-reviewed

Zhu, Huie, Gao, Yu, Yamamoto, Shunsuke, Miyashita, Tokuji, Mitsuishi, Masaya

Japanese Journal of Applied Physics　55　(3)　03DD11-1-03DD11-4　2016
Publisher: IOP PUBLISHING LTD
DOI： 10.7567/JJAP.55.03DD11 　

ISSN：0021-4922

eISSN：1347-4065

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Our earlier research prepared ferroelectric poly(vinylidene fluoride) (PVDF) homopolymer monolayers at the air-water interface using amphiphilic poly(N-dodecylacrylamide) (pDDA) nanosheets with Langmuir-Blodgett (LB) technique. However, the miscibility of solvent for PVDF with the water sub-phase in the Langmuir trough makes the film composition unclear in spite of the feeding ratio of PVDF : pDDA (50 : 1). In this study, angle-resolved X-ray photoelectron spectroscopy (AR-XPS) was used to investigate the surface chemical composition and the depth profile of the PVDF/pDDA LB nanofilms. The X-ray photoelectron spectroscopy (XPS) spectra confirmed by the detection of fluorine atoms that PVDF molecules were deposited successfully onto the substrate. The constant chemical composition with increasing takeoff angle from 15 to 75 degrees reflects a well-regular layer structure of the PVDF LB nanofilm. The mixing ratio of PVDF : pDDA is 33 : 1, which contributes 89.8 wt% PVDF and 10.2 wt% in the PVDF/pDDA LB nanofilms. (C) 2016 The Japan Society of Applied Physics
Multimodal underwater adsorption of oxide nanoparticles on catechol-based polymer nanosheets Peer-reviewed

Yamamoto, Shunsuke, Uchiyama, Shun, Miyashita, Tokuji, Mitsuishi, Masaya

Nanoscale　8　(11)　5912-5919　2016
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/c5nr08739b 　

ISSN：2040-3364

eISSN：2040-3372

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Multimodal underwater adsorption behaviour of catechol units was demonstrated by examining the adsorption of different oxide nanoparticles on nanoscale-integrated polymer nanosheets. Catechol-based polymer nanosheets were fabricated using the Langmuir-Blodgett (LB) technique with random copolymers (p(DDA/DMA) s) of N-dodecylacrylamide (DDA) and dopamine methacrylamide (DMA). The p(DDA/DMA) nanosheets were immersed into water dispersions of SiO2, Al2O3, and WO3 nanoparticles (NPs) respectively. The results show that the adsorption properties can be altered by varying the NP type: SiO2 NP adsorption was observed only below pH = 6, at which the o-quinone form in p(DDA/DMA) nanosheets transforms into the catechol form or vice versa. However, their transition point for Al2O3 NP adsorption was found at approximately pH 10, at which the surface potential of Al2O3 NPs changes the charge polarity, indicating that the electrostatic interaction is predominant. For WO3 NPs, adsorption was observed when citric acid, which modifies the surface of WO3 NPs by complex formation, was used as a pH-controlling agent, but no adsorption was found for hydrochloric acid used as a pH controlling agent. FT-IR measurements proved that miniscule amounts of water molecules were trapped in p(DDA/DMA) nanosheets and that they acquired hydrogen bonding network formations, which might assist nanoparticle adsorption underwater and make the catechol units adjustable. The results indicate that the nanoscale spatial arrangements of catechol units in films are crucially important for the application of multimodal adsorption of oxide nanoparticles on catechol-based polymer materials.
Highly oriented poly(vinylidene fluoride-cotrifluoroethylene) ultrathin films with improved ferroelectricity Peer-reviewed

Zhu, Huie, Yamamoto, Shunsuke, Matsui, Jun, Miyashita, Tokuji, Mitsuishi, Masaya

Rsc Advances　6　(38)　32007-32012　2016
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/c6ra03785b 　

ISSN：2046-2069

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We fabricated poly(vinylidene fluoride-co-trifluoroethylene), P(VDF-TrFE) 75/25 mol% Langmuir-Blodgett (LB) nanofilms by the assistance of amphiphilic poly(N-dodecylacrylamide) (pDDA) nanosheets. The nanosheet is formed based on a well-organized hydrogen bonding network among pDDA amide groups at the air-water interface. By the introduction of the pDDA nanosheet, the film stability of the P(VDF-TrFE) Langmuir film was greatly improved with a twofold increase in the collapse surface pressure to 57 mN m(-1) of pure P(VDF-TrFE). Then, the P(VDF-TrFE) Langmuir film was endowed a good transfer ability with a unity transfer ratio irrespective of its non-amphiphilicity. Absorbance of the amide group of pDDA in UV-vis spectra shows a good linear relation with the film thickness. The result indicates that the multilayered film takes a uniform layered structure. The b-crystal content in as-prepared LB nanofilms with no post-treatment is up to 80%, one of the highest values ever reported. The monolayer thickness was determined as 3.5 nm by AFM measurements. The good film properties make the as-prepared P(VDF-TrFE)/pDDA LB ultrathin films (18 nm) available for ferroelectricity measurement using macroscopic methods such as the typical Sawyer-Tower circuit, which is usually challenging for other ultrathin films. The measurements demonstrate improved ferroelectricity, with a high remanent polarization value of 5.0 mu C cm(-2) at 10 Hz.
Amphiphilic Fluorinated Polymer Nanoparticle Film Formation and Dissolved Oxygen Sensing Application Peer-reviewed

Gao, Yu, Zhu, Huie, Yamamoto, Shunsuke, Miyashita, Tokuji, Mitsuishi, Masaya

India-Japan Expert Group Meeting on Biomolecular Electronics & Organic Nanotechnology For Environment Preservation (Ijegmbe 2015)　704　012009　2016
Publisher: IOP PUBLISHING LTD
DOI： 10.1088/1742-6596/704/1/012009 　

ISSN：1742-6588

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Fluorinated polymer nanoparticle films were prepared by dissolving amphiphilic fluorinated polymer, poly(N-1H, 1H-pentadecafluorooctylmethacrylamide) (pC7F15MAA) in two miscible solvents (AK-225 and acetic acid). A superhydrophobic and porous film was obtained by dropcasting the solution on substrates. With higher ratios of AK-225 to acetic acid, pC7F15MAA was densified around acetic acid droplets, leading to the formation of pC7F15MAA nanoparticles. The condition of the nanoparticle film preparation was investigated by varying the mixing ratio or total concentration. A highly sensitive dissolved oxygen sensor system was successfully prepared utilizing a smart surface of superhydrophobic and porous pC7F15MAA nanoparticle film. The sensitivity showed I0/I40 = 126 in the range of dissolved oxygen concentration of 0 similar to 40 mg L-1. The oxygen sensitivity was compared with that of previous reports.
Surface wettability of amphiphilic fluorinated polymer thin films Peer-reviewed

Gao, Yu, Zhu, Huie, Yamamoto, Shunsuke, Miyashita, Tokuji, Mitsuishi, Masaya

Polymer Bulletin　73　(9)　2409-2415　2016
Publisher: SPRINGER
DOI： 10.1007/s00289-016-1668-5 　

ISSN：0170-0839

eISSN：1436-2449

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The surface wettability of amphiphilic fluorinated polymer poly(N-1H,1H-pentadecafluorooctylmethacrylamide), (pC7F15MAA) films was investigated. Nanostructured fluorinated polymer pC7F15MAA films were prepared using two bottom-up methods: Langmuir-Blodgett technique and dropcasting. The pC7F15MAA LB films show quite smooth surfaces as low as the surface roughness of 1.16 nm, and the surface has a water contact angle (WCA) of 118A degrees, indicating that the surface is occupied by the CF3 groups. Dropcasting provides pC7F15MAA nanoparticle assemblies with the surface roughness of 230 nm and a WCA of 163A degrees. Results imply that bottom-up approaches with amphiphilic fluorinated polymer are effective to construct nanostructures, thereby controlling the surface wettability.
Nanoscale deposition of metal-organic framework films on polymer nanosheets Peer-reviewed

Ohara, Hiroaki, Yamamoto, Shunsuke, Onodera, Tsunenobu, Kasai, Hitoshi, Oikawa, Hidetoshi, Miyashita, Tokuji, Mitsuishi, Masaya

Rsc Advances　6　(78)　74349-74353　2016
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/c6ra17997e 　

ISSN：2046-2069

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We demonstrate high potential of polymer nanosheets as a soft scaffold for the growth of metal-organic framework films. Nanofilms of a Cu-based metal-organic framework (HKUST-1) were deposited by the layer-by-layer processing on polymer nanosheets fabricated by the Langmuir-Blodgett technique. The film growth proceeds in the (111) direction to yield a highly smooth surface.
A versatile platform of catechol-functionalized polysiloxanes for hybrid nanoassembly and in situ surface enhanced Raman scattering applications Peer-reviewed

Liu, Yida, Demirci, Ali, Zhu, Huie, Cai, Jinguang, Yamamoto, Shunsuke, Watanabe, Akira, Miyashita, Tokuji, Mitsuishi, Masaya

Journal of Materials Chemistry C　4　(38)　8903-8910　2016
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/c6tc02963a 　

ISSN：2050-7526

eISSN：2050-7534

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Inspired by the marine mussel strategy of adhesion in aqueous environments, catechol-functionalized polysiloxane (CFPS) was synthesized. Facile dip-coating showed good film forming ability on various organic and inorganic substrates with a surface roughness of 4.6 nm (50 mu m x 50 mu m). Silver nanoparticles (AgNPs) are anchored onto CFPS-modified substrates using a dip coating process. The scanning electron microscopy images revealed that AgNPs were distributed homogeneously on numerous substrates. Moreover, the surface number density and average interspace of the AgNPs were tuned easily by controlling the concentration of AgNP dispersions. A substrate with high-density AgNPs exhibited excellent surface enhanced Raman scattering (SERS) performance with an enhancement factor as high as 7.89 x 10(7) and an ultra-low detection limitation of 10(-10) M, which can be ascribed to the "hotspots'' formed between the adjacent AgNPs controlled by CFPS-induced self-assembly. The AgNP structures prepared on different substrates modified using CFPS show a similar high intensity, suggesting a versatile platform of the CFPS film for AgNP assemblies. In addition, AgNPs were anchored to be extremely stable on substrates because of strong hydrogen bonding interactions provided by the high surface-density catechol units of CFPS, which made the substrate a promising SERS sensor for practical applications. In situ SERS detection was also demonstrated on apple peel with no damage to AgNP structures.
Alkylamide-substituted tetraphenylethylene: three modes of fluorescence based on a hydrogen-bonded excimer Peer-reviewed

Takeda, Takashi, Yamamoto, Shunsuke, Mitsuishi, Masaya, Akutagawa, Tomoyuki

Organic & Biomolecular Chemistry　14　(38)　8922-8926　2016
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/c6ob01110a 　

ISSN：1477-0520

eISSN：1477-0539

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Three modes of emission, with different intensities and wave-lengths were observed in tetraphenylethylenetetraamide 1 depending on the solvent, concentration and continuous irradiation with light, where intermolecular hydrogen bonds between amide units played a significant role. Limitation of the motility of molecule 1 in the excited state by intermolecular hydrogen bonding is the key for observation of fluorescence even in the solution and transformation to the corresponding 9,10-diphenyl-phenanthrene derivative.
Superhydrophobic Porous Surfaces: Dissolved Oxygen Sensing Peer-reviewed

Gao, Yu, Chen, Tao, Yamamoto, Shunsuke, Miyashita, Tokuji, Mitsuishi, Masaya

Acs Applied Materials & Interfaces　7　(6)　3468-3472　2015
Publisher: AMER CHEMICAL SOC
DOI： 10.1021/am509147h 　

ISSN：1944-8244

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Porous polymer films are necessary for dissolved gas sensor applications that combine high sensitivity with selectivity. This report describes a greatly enhanced dissolved oxygen sensor system consisting of amphiphilic acrylamide-based polymers: poly(N-(1H, 1H-pentadecafluorooctyl)-methacrylamide) (pC7F15MAA) and poly(N-dodecylacrylamide-co-5- [4-(2-methacryloyloxyethoxy-carbonyl)phenyl]-10,15,20-triphenylporphinato platinum(II)) (p(DDA/PtTPP)). The nanoparticle formation capability ensures both superhydrophobicity with a water contact angle greater than 160 degrees and gas permeability so that molecular oxygen enters the film from water. The film was prepared by casting a mixed solution of pC7F15MAA and p(DDA/PtTPP) with AK-225 and acetic acid onto a solid substrate. The film has a porous structure comprising nanoparticle assemblies with diameters of several hundred nanometers. The film shows exceptional performance as the oxygen sensitivity reaches 126: the intensity ratio at two oxygen concentrations (I-0/I-40) respectively corresponding to dissolved oxygen concentration 0 and 40 (mg L-1). Understanding and controlling porous nanostructures are expected to provide opportunities for making selective penetration/separation of molecules occurring at the superhydrophobic surface.
Luminescence Properties of Anthracene Chromophores in Cyclosiloxane- Based Hybrid Polymer Films Peer-reviewed

Demirci, Ali, Yamamoto, Shunsuke, Matsui, Jun, Miyashita, Tokuji, Mitsuishi, Masaya

Communication in Photoscience　4　(1)　16-18　2015
Solvent-dependent properties of poly(vinylidene fluoride) monolayers at the air-water interface Peer-reviewed

Zhu, Huie, Matsui, Jun, Yamamoto, Shunsuke, Miyashita, Tokuji, Mitsuishi, Masaya

Soft Matter　11　(10)　1962-1972　2015
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/c4sm02800g 　

ISSN：1744-683X

eISSN：1744-6848

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The present work addresses the solvent-dependent properties of Langmuir films of poly(vinylidene fluoride) (PVDF) and amphiphilic poly(N-dodecylacrylamide) (pDDA) at different mixing ratios. After introducing pDDA nanosheets, PVDF Langmuir films obtain a tremendously enhanced modulus as well as high transfer ratios using the vertical dipping method caused by the support of the pDDA two-dimensional hydrogen bonding network. Brewster angle microscopy (BAM) was used to investigate PVDF monolayers at the air-water interface in situ. Spreading from different solvents, the PVDF molecules take completely different aggregation states at the air-water interface. The PVDF molecules aggregate to become large domains when spread from N-methyl-2-pyrrolidone (NMP). However, the volatile and low-polarity methylethyl ketone (MEK) made the PVDF molecules more dispersive on the water surface. This study also discovers a versatile crystallization control of PVDF homopolymer from complete beta phase (NMP) to complete alpha phase (MEK) at the air-water interface, thereby eliciting useful information for further manipulation of film morphologies and film applications.
Fluorescent Ferroelectrics of Hydrogen-Bonded Pyrene Derivatives Peer-reviewed

Anetai, Hayato, Wada, Yoshifumi, Takeda, Takashi, Hoshino, Norihisa, Yamamoto, Shunsuke, Mitsuish, Masaya, Takenobu, Taishi, Akutagawa, Tomoyuki

Journal of Physical Chemistry Letters　6　(10)　1813-1818　2015
Publisher: AMER CHEMICAL SOC
DOI： 10.1021/acs.jpclett.5b00703 　

ISSN：1948-7185

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Organic materials with diverse molecular designs show multifunctional properties such as coupled ferroelectric, optical, ferromagnetic, and transport properties. We report the design of an alkylamide-substituted pyrene derivative displaying fluorescent ferroelectric properties coupled with electron transport properties. In solution phase, this compound displayed concentration-dependent fluorescence, whereas in xerogels, a fluorescent green organogel (>0.1 mM) and entangled nanofibers were observed. A discotic hexagonal columnar liquid crystalline phase was observed above 295 K due to intermolecular hydrogen bonding and pi-stacking interactions. The direction of the hydrogen-bonded chains could be inverted by the application of an external electric field along the pi-stacked column, resulting in ferroelectric polarization-electric field (P-E) hysteresis. The local electric field arising from the ferroelectric macrodipole moment arrangement along the pi-stacking direction affected the electron transport properties on the pi-stack of pyrenes, thus confirming the current-switching phenomena according to P-E hysteresis. We report that multifunctional properties such as ferroelectricity, fluorescence, and electron transport switching were successfully achieved in hydrogen-bonded dynamic pi-molecular assemblies.
Flexible SiO2 nanofilms assembled on poly(ethylene terephthalate) substrates through a room temperature fabrication process for nanoscale integration Peer-reviewed

Yamamoto, Shunsuke, Sonobe, Kazuki, Miyashita, Tokuji, Mitsuishi, Masaya

Journal of Materials Chemistry C　3　(6)　1286-1293　2015
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/c4tc02131b 　

ISSN：2050-7526

eISSN：2050-7534

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We propose a room-temperature and ambient-pressure fabrication process of SiO2 nanofilms on flexible poly(ethylene terephthalate) (PET) substrates. Polymer Langmuir-Blodgett (LB) films containing silsesquioxane units (p(DDA/SQ22)) are successfully photo-oxidized into SiO2 nanofilms without PET degradation by UV-ozone treatment. Thicknesses of the obtained SiO2 nanofilms are tuned by 0.4 nm per monolayer, indicating that this method affords SiO2 nanofilms with a precisely controlled thickness. Photo-oxidized SiO2 nanofilms have good transparency and high electric resistance (ca. 10(-9) S cm(-1)) even on flexible PET substrates. The resulting SiO2 nanofilms also serve as a protecting layer for PET substrates against photo-oxidizing degradation. Thus, PET films retain optical transparency even after UV-ozone treatment. Results of an investigation of the photo-oxidization mechanism reveal that UV-ozone induced conversion from silsesquioxane to SiO2 comprises two photochemical reaction processes: (1) decomposition of organic moieties in p(DDA/SQ22) LB films and (2) subsequent photo-oxidation of residual silsesquioxane units. The time constant of the second reaction strongly depends on the initial film thickness. This sequential and thickness-dependent conversion indicates that the conversion is controlled by the diffusion of extrinsic oxygen sources into the films. The results show that this method is promising for the coating of transparent insulating SiO2 layers for flexible optoelectronic device applications.
Facile synthesis of cyclosiloxane-based polymers for hybrid film formation Peer-reviewed

Demirci, Ali, Yamamoto, Shunsuke, Matsui, Jun, Miyashita, Tokuji, Mitsuishi, Masaya

Polymer Chemistry　6　(14)　2695-2706　2015
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/c5py00018a 　

ISSN：1759-9954

eISSN：1759-9962

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A straightforward synthesis of cyclosiloxane-based hybrid polymers and preparation of hybrid network polymer films were demonstrated. Cyclosiloxane-based hybrid polymers were prepared from one-step hydrosilylation of tetrasilane-functional cyclosiloxanes with divinyl-terminated dimethylsiloxane monomers. Colorless and soluble hybrid polymers were obtained by controlling synthesis parameters such as the initial monomer ratio and the total monomer concentration. The H-1, Si-29 NMR and FT-IR results revealed that the resulting hybrid polymers took practically linear structures with residual silane groups that enable us to crosslink hybrid polymers through subsequent condensation reactions with multi-step heat treatments. Consequently, flexible, thermally mechanically robust, optically transparent free-standing hybrid network polymer films were obtained with more than 90% optical transparency (0.2 mm thickness) in the UV-visible light wavelength region (>220 nm). Moreover, they had good thermal stability (approximately 300 degrees C) and approximately 400 MPa Young's modulus. Self-crosslinking reaction of residual Si-H groups in hybrid polymers contributed to the enhanced thermal and mechanical properties of hybrid polymer films because of the siloxane linkage conversion from R2SiO to the RSiO3/2 framework.
Effect of alkyl groups on emission properties of aggregation induced emission active N-alkyl arylaminomaleimide dyes Peer-reviewed

Imoto, Hiroaki, Nohmi, Katsuya, Kizaki, Kohei, Watase, Seiji, Matsukawa, Kimihiro, Yamamoto, Shunsuke, Mitsuishi, Masaya, Naka, Kensuke

RSC Advances　5　(114)　94344-94350　2015
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/c5ra18690k 　

ISSN：2046-2069

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Aggregation induced emission (AIE) active N-alkyl aminomaleimide dyes with various kinds of N-alkyl groups were synthesized in a one pot process. The synthesized dyes exhibited different emission behaviors depending on the chemical structure of the N-alkyl group, although they had no direct contribution to the p-conjugated system. Chain length, hydroxyl group and branching structure were important in the emission properties such as quantum yield and emission wavelength. Furthermore, it was found that one of the dyes showed mechanochromism; the green emission of crystal samples turned to blue emission after grinding. Single crystal X-ray diffraction analysis revealed that the surrounding around the luminophore was dominant in the emission behaviors.
Asymmetric Ferroelectric Switching Based on an Al/PVDF Langmuir-Blodgett Nanofilm/PEDOT:PSS/Al Device Peer-reviewed

Zhu, Huie, Yamamoto, Shunsuke, Matsui, Jun, Miyashita, Tokuji, Mitsuishi, Masaya

Molecular Crystals and Liquid Crystals　618　(1)　89-94　2015
Publisher: TAYLOR & FRANCIS LTD
DOI： 10.1080/15421406.2015.1075821 　

ISSN：1542-1406

eISSN：1563-5287

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We prepared highly oriented ferroelectric poly(vinylidene fluoride) (PVDF) Langmuir-Blodgett (LB) nanofilms by an assistance of amphiphilic poly(N-dodecylacrylamide) (pDDA) nanosheets. In the nanofilms, semi-crystalline PVDF contains abundant polar crystals, a parallel packing of PVDF all-trans molecules. Combing semi-conductive PEDOT:PSS and ferroelectric PVDF LB nanofilms, we fabricated a sandwiched capacitor (Al/PVDF LB nanofilm/PEDOT:PSS/Al). The capacitor shows asymmetric hysteresis curves and high remanent polarization values.
Synthesis and Properties of Poly(phenyleneethynylene)s Bearing Perylene Moieties at the Side Chains Peer-reviewed

Hashimoto, Akinobu, Miyagi, Yu, Sogawa, Hiromitsu, Yamamoto, Shunsuke, Sanda, Fumio

Chemistry Letters　43　(10)　1622-1624　2014
Publisher: CHEMICAL SOC JAPAN
DOI： 10.1246/cl.140601 　

ISSN：0366-7022

eISSN：1348-0715

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The Sonogashira-Hagihara coupling polymerization of D-hydroxyphenylglycine-based diiodo monomers 1 and 2 with p-diethynylbenzene gave novel optically active poly(phenyleneethynylene)s 3 and 4 bearing perylene moieties with number-average molecular weights (M-n's) of 4800 and 3700 in 39% and 57% yields. The CD and UV-vis spectroscopic analysis revealed that polymer 3 formed folded helical structures in various solvents, while polymer 4 did not. UV-vis and fluorescence spectroscopic analysis indicated the presence of energy transfer from the phenyleneethynylene main chain to perylene side chains.
Ferroelectricity of poly(vinylidene fluoride) homopolymer Langmuir-Blodgett nanofilms Peer-reviewed

Zhu, Huie, Yamamoto, Shunsuke, Matsui, Jun, Miyashita, Tokuji, Mitsuishi, Masaya

Journal of Materials Chemistry C　2　(33)　6727-6731　2014
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/c4tc00600c 　

ISSN：2050-7526

eISSN：2050-7534

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As-deposited poly(vinylidene fluoride) (PVDF) Langmuir-Blodgett (LB) nanofilms with a complete beta phase show a remarkably high remanent polarization (P-r), about 6.6 mu C cm(-2) at 81 nm. Extrinsic switching characteristics of the nanofilms are demonstrated. Results also show that highly oriented PVDF homopolymer LB nanofilms down to 12 nm with no post-treatment retain robust room-temperature ferroelectric polarization switching that is greater than 10(5) operation cycles, with longer standing fatigue endurance than those of PVDF copolymer nanofilms.
Electron-donor function of methanofullerenes in donor-acceptor bulk heterojunction systems Peer-reviewed

Ie, Yutaka, Karakawa, Makoto, Jinnai, Seihou, Yoshida, Hiroyuki, Saeki, Akinori, Seki, Shu, Yamamoto, Shunsuke, Ohkita, Hideo, Aso, Yoshio

Chemical Communications　50　(31)　4123-4125　2014
Publisher: ROYAL SOC CHEMISTRY
DOI： 10.1039/c4cc00940a 　

ISSN：1359-7345

eISSN：1364-548X

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Electron-donor function of methanofullerenes (MFs) in bulk heterojunction systems is demonstrated by the combination of MFs with the electron-transporting pi-system that has a much higher electron affinity than MFs.
Charge Generation and Recombination in Fullerene-Attached Poly(3-hexylthiophene)-Based Diblock Copolymer Films Peer-reviewed

Yamamoto, Shunsuke, Yasuda, Hiroaki, Ohkita, Hideo, Benten, Hiroaki, Ito, Shinzaburo, Miyanishi, Shoji, Tajima, Keisuke, Hashimoto, Kazuhito

Journal of Physical Chemistry C　118　(20)　10584-10589　2014
Publisher: AMER CHEMICAL SOC
DOI： 10.1021/jp4126683 　

ISSN：1932-7447

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The charge generation and recombination dynamics in fullerene-attached poly(3-herrythiophene) (P3HT)-based diblock copolymer were studied in comparison with those in blend films of P3HT and a fullerene derivative (PCBM) in order to understand the potential advantage of diblock copolymer-based polymer solar cells. Upon photoexcitation, P3HT singlet excitons are promptly converted to P3HT polarons with a time constant of similar to 30 ps in both P3HT-PCBM diblock copolymer and P3HT/PCBM blend films. This similar charge generation dynamics is indicative of analogous phase-separated morphology both in these films on a scale of nanometers. After the charge generation, a part of polarons in disorder phases geminately recombine to the ground state in diblock copolymer films, while no geminate recombination is observed in blend films. This geminate recombination loss is probably due to defects of phase-separated structures in diblock copolymer films. On the other hand, charge carrier lifetime is as long as 15 mu s in diblock copolymer films. Such a long carrier lifetime may result in a relatively high fill factor in P3HT-PCBM copolymer films. Finally, we discuss the overall device performance in terms of phase-separated structures.
Efficient Charge Generation and Collection in Amorphous Polymer-Based Solar Cells Peer-reviewed

Yamamoto, S., Ohkita, H., Benten, H., Ito, S., Kitazawa, D., Tsukamoto, J.

Journal of Physical Chemistry C　117　(22)　11514-11521　2013
Publisher: AMER CHEMICAL SOC
DOI： 10.1021/jp402077j 　

ISSN：1932-7447

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The charge generation and recombination dynamics in amorphous blend films of poly[2,7-(9,9-dioctylfluorene)-alt-5,5-(5',8'-di-2-thienyl-2',3'-diphenylquinoxaline)] (N-P7) and [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM) were comprehensively studied in order to address the origin of the relatively high performance for amorphous polymer-based solar cells. Upon photoexcitation, N-P7 singlet excitons are promptly converted to the interfacial charge transfer (CT) state, which is a Coulombically bound pair of the N-P7 polaron and PCBM radical anion, with 100% efficiency in a picosecond. More than half of the N-P7 polarons in the CT state are dissociated into free carriers, and the rest of them recombine to the ground state in a nanosecond. The dissociation efficiency eta(CD), is estimated to be 0.65 under the open-circuit condition and is slightly enhanced up to 0.7-0.8 under the short-circuit condition. Such highly efficient dissociation is well explained by considering charge delocalization. The charge collection efficiency eta(CC) is as high as >0.9 in the thin device but decreases to <0.8 in the thick device, suggesting that bimolecular recombination loss is not negligible in the thick device. Furthermore, the origin of the efficient device performance is discussed in terms of the field dependence and the charge delocalization.
Role of Interfacial Charge Transfer State in Charge Generation and Recombination in Low-Bandgap Polymer Solar Cell Peer-reviewed

Yamamoto, S., Ohkita, H., Benten, H., Ito, S.

Journal of Physical Chemistry C　116　(28)　14804-14810　2012
Publisher: AMER CHEMICAL SOC
DOI： 10.1021/jp303284r 　

ISSN：1932-7447

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The charge carrier dynamics in blend films of poly[2,6-(4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b']dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)] (PCPDTBT) and [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM) was studied by transient absorption spectroscopy in order to address the origin of limited external quantum efficiency (EQE) of this solar cell compared to that of a benchmark solar cell composed of regioregular poly(3-hexythiphene) (RR-P3HT) and PCBM. Upon photoexcitation, PCPDTBT singlet excitons promptly convert to the interfacial charge transfer (CT) state that is a Coulombically bound charge pair of PCPDTBT polaron and PCBM anion at the heterojunction with almost 100% efficiency in a picosecond. In other words, the exciton diffusion efficiency eta(ED) and charge transfer efficiency eta(CT) are 100% in this blend, which are higher than and comparable to those of the RR-P3HT/PCBM solar cell, respectively. On a time scale of nanoseconds, 70% of the PCPDTBT bound polarons are dissociated into free charge carriers, and the others recombine geminately to the ground state through the CT state. The charge dissociation efficiency eta(CD) = 70% is lower than that of RR-P3HT/PCBM solar cells. The PCPDTBT dissociated polarons recombine bimolecularly on a time scale of nano- to microseconds with a charge lifetime of similar to 10(-7) s, which is shorter than that observed for RR-P3HT/PCBM blends. In summary, the lower charge dissociation efficiency and shorter charge lifetime are the limiting factors for the photovoltaic performance of PCPDTBT/PCBM solar cells. Furthermore, the origin of such limitation is also discussed in terms of the charge dissociation and recombination through the interfacial CT state in PCPDTBT/PCBM blends.
Molecular Understanding of the Open-Circuit Voltage of Polymer:Fullerene Solar Cells Peer-reviewed

Yamamoto, S., Orimo, A., Ohkita, H., Benten, H., Ito, S.

Advanced Energy Materials　2　(2)　229-237　2012
Publisher: WILEY PERIODICALS, INC
DOI： 10.1002/aenm.201100549 　

ISSN：1614-6832
Formation Mechanism of Fullerene Cation in Bulk Heterojunction Polymer Solar Cells Peer-reviewed

Yamamoto, S., Ohkita, H., Benten, H., Ito, S.

Advanced Functional Materials　22　(14)　3075-3082　2012
Publisher: WILEY-V C H VERLAG GMBH
DOI： 10.1002/adfm.201200086 　

ISSN：1616-301X

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The charge carrier dynamics in blend films of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) and conjugated polymers with different ionization potentials are measured using transient absorption spectroscopy to study the formation mechanism of PCBM radical cation, which was previously discovered for blend films of poly[2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO-PPV) and PCBM. On a nanosecond time scale after photoexcitation, polymer hole polaron and PCBM radical anion are observed but no PCBM radical cation is found in the blends. Subsequently, the fraction of polymer hole polarons decreases and that of PCBM radical cations increases with time. Finally, the fraction of PCBM radical cations becomes constant on a microsecond time scale. The final fraction of PCBM radical cation is dependent on the ionization potential of polymers but independent of the excitation wavelength. These findings show that the formation of PCBM radical cation is due to hole injection from polymer to PCBM domains. Furthermore, the energetic conditions for such hole injection in polymer/PCBM blend films are discussed on the basis of Monte Carlo analysis for hole hopping in a disordered donor/acceptor heterojunction with varying energetic parameters.
Formation of methanofullerene cation in bulk heterojunction polymer solar cells studied by transient absorption spectroscopy Peer-reviewed

Yamamoto, S., Guo, J., Ohkita, H., Ito, S.

Advanced Functional Materials　18　(17)　2555-2562　2008
Publisher: WILEY-V C H VERLAG GMBH
DOI： 10.1002/adfm.200800411 　

ISSN：1616-301X

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Photogenerated charge carriers for blend films of poly[2-methoxy-5-(3,7-dimetliyloctyloxy)- 1,4-phenyleneviiiyleiieJ (MDMO-PPV) and [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM) have been investigated by transient absorption spectroscopy. The blend film with a low PCBM fraction (<10wt %) exhibits a wide absorption that ranges from 900 to 1000nm, which is characteristic of the MDMO-PPV hole polaron and PCBM radical anion. On the other hand, the blend film with a higher PCBM fraction (> 30wt %) exhibits a major absorption band at similar to 900nm, which is characteristic of the PCBM radical cation. For identification of charge carriers, the absorption spectrum and molar absorption coefficient of each charged species have been evaluated separately using various combinations of electron donor and acceptor materials. Consequently, the MDMO-PPV hole polaron has been found to have a broad absorption at similar to 950 nm and the PCBM radical anion and cation show a distinct absorption at 1020 and 890 nm, respectively. On the basis of these absorption spectra, the transient spectra observed for the blend films have been simulated. The spectrum for a low PCBM fraction is well reproduced by superposition of the absorption spectra of the MDMO-PPV hole polaron and PCBM radical anion. On the other hand, the spectrum for a high PCBM fraction is well reproduced by superposition of the absorption spectra of the MDMO-PPV hole polaron, PCBM radical anion, and PCBM radical cation, which indicates that the PCBM radical cation is formed in the blend films with PCBM at a high concentration. Possible mechanisms for the formation of the PCBM. radical cation in the blend are also discussed.
Langmuir-Blodgett films of a glucose residue-carrying amphiphilic block copolymer studied by surface plasmons and transmission electron microscopy Peer-reviewed

Yamamoto, S., Tsujii, Y., Yamada, K., Fukuda, T., Miyamoto, T., Ito, S.

Langmuir　12　(15)　3671-3674　1996
Publisher: AMER CHEMICAL SOC
DOI： 10.1021/la960129f 　

ISSN：0743-7463

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An amphiphilic diblock copolymer with a narrow molecular weight distribution, which has a glucose residue-carrying vinyl ether subchain and an isobutyl vinyl ether subchain, was studied with its monolayer-forming properties at the air-water interface. The block copolymer and its blends with poly(isobutyl vinyl ether) homopolymer, spread from a mixture solution of chloroform and methanol onto the water surface, were found to form a stable monolayer. The surface monolayers were successfully transferred onto a substrate by the Langmuir-Blodgett technique, and the built-up film was characterized by surface plasmons and transmission electron microscopy. The surface pressure-area isotherms exhibited a plateau region, suggesting a structural change taking place on the water surface at specific pressures. The observed values of the layer thickness and the occupied area indicated that the hydrophobic segments, which lie essentially flat on the water surface at low surface pressures, aggregate at higher pressures, forming a thicker layer with hydrophobic and hydrophilic segments microphase-separated at the air-water interface. In addition, it was demonstrated that the layered structure of the LB film could be controlled by blending the homopolymer.

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Misc. 104

Control of Physical Properties of BTBT Derivatives bearing Tetraethylene Glycol and Chiral Alkylamide Chains

三部宏平, 武田貴志, 出倉駿, 出倉駿, 松田若菜, 辻田香奈瑛, 丸山伸伍, 山本俊介, 関修平, 松本祐司, 芥川智行, 芥川智行

分子科学討論会講演プログラム&要旨(Web)　17th　2023
Design of Ferroelectric Organic Semiconductors with Alkylamide-substituted R-BTBT-NHCOC14H29 (R = H, C8H17)

三部宏平, 武田貴志, 武田貴志, 星野哲久, 松田若菜, 辻田香奈瑛, 丸山伸伍, 山本俊介, 関修平, 松本祐司, 芥川智行, 芥川智行

分子科学討論会講演プログラム&要旨(Web)　16th　2022
Structure and physical properties of alkylamide-substituted C8-BTBT-CONHCnH2n+1 (n=3, 14)

三部宏平, 武田貴志, 武田貴志, 星野哲久, 星野哲久, 松田若菜, 辻田香奈瑛, 丸山伸伍, 山本俊介, 関修平, 松本祐司, 芥川智行, 芥川智行

分子科学討論会講演プログラム&要旨(Web)　15th　2021
Metal-Organic Framework Films on Polymer Materials

山本俊介

日本結晶成長学会誌(CD-ROM)　48　(2)　2021

ISSN：2188-7268
界面を用いた機能性材料の精密集積有機半導体ユニット,金属有機構造体を例にして

山本俊介

化学と工業　72　(3)　234‐235　2019/03/01

ISSN：0022-7684
高分子薄膜上での金属有機構造体薄膜の結晶成長解析

大原浩明, 山本俊介, 及川英俊, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　66th　ROMBUNNO.11p‐M111‐7　2019/02/25
ナフタレンジイミド含有デンドリマーナノシートの精密集積

山本俊介, 平嶋奎一郎, 塩谷暢貴, 下赤卓史, 長谷川健, 松井淳, 宮下徳治, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　66th　ROMBUNNO.11p‐M111‐12　2019/02/25
シルセスキオキサン含有高分子ナノシートを利用した多孔性SiO2超薄膜の細孔径制御

石崎裕也, 山本俊介, 宮下徳治, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　66th　ROMBUNNO.9p‐PB3‐27　2019/02/25
フェロセン修飾高分子電解質超薄膜を用いた抵抗変化スイッチ特性

渡邉暁斗, 山本俊介, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　66th　ROMBUNNO.12a‐PA4‐3　2019/02/25
Preparation and characterization of Poly(vinylidene fluoride) nanoparticles

FU Chang, ZHU Huie, YAMAMOTO Shunsuke, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　67　(1)　ROMBUNNO.3Pc101　2018/05/08
Superhydrophobic Cellulose Nanofiber Surface Assembly for Oil-Water Separation

BASHAR M. Mahbubul, ZHU Huie, YAMAMOTO Shunsuke, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　67　(1)　ROMBUNNO.2M27　2018/05/08
Soft and Compressible Self-healing Polycyclosiloxanes Based on Siloxane Equilibrations

DEMIRCI Ali, ZHU Huie, YAMAMOTO Shunsuke, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　67　(1)　ROMBUNNO.3M16　2018/05/08
Cyclosiloxane Derived Supramolecules for Advanced Coatings and Adhesives

ZHU Huie, BUCHTAL Tillman Jan, YAMAMOTO Shunsuke, DEMIRCI Ali, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　67　(1)　ROMBUNNO.2M26　2018/05/08
Surface Wettability and Nanostructure Formation of Fluorinated Polymer Self-Assemblies

IM Yongjoon, GAO Yu, ZHU Huie, YAMAMOTO Shunsuke, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　67　(1)　ROMBUNNO.3Pa063　2018/05/08
高分子超薄膜を用いた有機無機ハイブリッド材料の精密ナノ集積 (M&BE研究会有機分子・バイオエレクトロニクスの未来を観る)

山本俊介

Molecular electronics and bioelectronics = 応用物理学会,有機分子・バイオエレクトロニクス分科会会誌　29　(2)　60-63　2018/05
Publisher: 応用物理学会有機分子・バイオエレクトロニクス分科会
ISSN：2423-8805
高分子超薄膜をテンプレートとしたナノ粒子集積

三ツ石方也, 劉一達, デミルチアリ, 朱慧娥, 山本俊介, 宮下徳治

ケミカルエンジニヤリング　63　(4)　29-35　2018/04
ナノおよびミクロ相分離を用いたブロックコポリマーの構造作製

伊藤祥穂, 松永康平, 松井淳, 山本俊介, 三ツ石方也, 永野修作, 藪浩

高分子学会予稿集(CD-ROM)　67　(2)　2018
ビチオフェン含有高分子ナノシートの構造解析

山本俊介, 池元智拾, 下赤卓史, 長谷川健, 小金澤智之, 宮下徳治, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　65th　2018

ISSN：2436-7613
Lamellar film formation in comb-shape polymers by humid annealing.

Ito Sachiho, Matsui Jun, Yamamoto Shunsuke, Mitsuishi Masaya, Nagano Shusaku

Proceedings of Japanese Liquid Crystal Society Annual meeting　2018　(0)　1B04　2018
Publisher: THE JAPANESE LIQUID CRYSTAL SOCIETY
DOI： 10.11538/ekitou.2018.0_1B04 　

ISSN：1880-3490

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Amphiphilic Cyclosiloxane Supramolecules toward Unique Self-Assembly Nanostructures

ZHU Huie, BUCHTAL Tillman Jan, YAMAMOTO Shunsuke, MIYASHITA Tokuji, MITSUISHI Masaya

超分子化学と機能性材料に関する国際シンポジウム2018　148　2018
Spontaneous formation of poly(vinylidene fluoride) nanoparticles with dominant electroactive phase

FU Chang, ZHU Huie, YAMAMOTO Shunsuke, ONODERA Tsunenobu, OIKAWA Hidetoshi, MITSUISHI Masaya

超分子化学と機能性材料に関する国際シンポジウム2018　80　2018
加湿アニール法により両親媒性高分子が形成する一軸配向ラメラ構造を用いた異方イオン伝導

江端一輝, 後藤崚介, 長尾祐樹, 山本俊介, 三ツ石方也, 永野修作, 松井淳

固体イオニクス討論会講演要旨集　43rd　216‐217　2017/12/05
Structure of hybrid nanoplate composed of amphiphilic polyhedral oligomeric silsesquioxane

AKATSUKA Asami, ZHU Huie, YAMAMOTO Shunsuke, MITSUISHI Masaya, MIYASHITA Tokuji, GEMMEI‐IDE Makoto, NAGANO Shusaku, MATSUI Jun

化学系学協会東北大会プログラムおよび講演予稿集　2017　125　2017/09/16
加湿アニール法を用いた両親媒性高分子の高配向ラメラ構造膜とその異方イオン伝導

江端一輝, 後藤崚介, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

高分子学会予稿集(CD-ROM)　66　(2)　ROMBUNNO.2B16　2017/09/06
A Mussel-Inspired Cyclosiloxane Supramolecule for Air-Stable Self-Assembly Coatings

ZHU Huie, YAMAMOTO Shunsuke, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　66　(2)　ROMBUNNO.1B06　2017/09/06
室温プロセスを用いて高分子超薄膜から作製する無機酸化物ヘテロ積層体

山本俊介

村田学術振興財団年報　(31)　348‐354　2017/06

ISSN：0919-3383
加湿アニール法による高配向ラメラ構造膜の構築とイオン伝導材料への応用

江端一輝, 橋本侑宜, 後藤峻介, 長尾祐樹, 山本俊介, 三ツ石方也, 永野修作, 永野修作, 松井淳

高分子学会予稿集(CD-ROM)　66　(1)　ROMBUNNO.1J29　2017/05/15
poly(N‐alkylacrylamides)が水中で形成するラメラ構造を用いたイオン伝導材料

江端一輝, 後藤崚介, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

日本化学会春季年会講演予稿集(CD-ROM)　97th　ROMBUNNO.3A3‐17　2017/03/03
高分子超薄膜を用いたwet環境で動作する人工シナプス素子の創製

山本俊介

研究助成金受給者研究報告集　36　7-11　2017
Publisher: 日揮・実吉奨学会
Photoinduced Silica Nanostructures Based on Cyclosiloxane Supramolecule Assemblies at Room Temperature

ZHU Huie, AKKUS Buket, YAMAMOTO Shunsuke, MIYASHITA Tokuji, MITSUISHI Masaya

光化学討論会要旨集(CD-ROM)　2017　ROMBUNNO.3B11　2017
Flexible Hybrid Nanoparticle Assemblies for High Sensitive SERS and UV detection

LIU Yida, ZHU Huie, YAMAMOTO Shunsuke, MIYASHITA Tokuji, WATANABE Akira, MITSUISHI Masaya

光化学討論会要旨集(CD-ROM)　2017　ROMBUNNO.1D04　2017
Poly(N‐alkylacrylamide)が水の刺激で構築するラメラ構造

江端一輝, 橋本侑宜, 後藤崚介, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

ポリマー材料フォーラム講演予稿集　25th　197　2016/10/26
Construction of hybrid nanoplate by self-assembly of amphiphilic polyhedral oligomeric silsesquioxane

AKATSUKA Asami, ZHU Huie, YAMAMOTO Shunsuke, MITSUISHI Masaya, MIYASHITA Tokuji, MATSUI Jun

化学系学協会東北大会プログラムおよび講演予稿集　2016　152　2016/09/10
Uniform lamellar structure formation of pDDA-b-PEG by humidity annealing

MATSUNAGA Kohei, YAMAMOTO Shunsuke, MITSUISHI Masaya, MATSUI Jun

化学系学協会東北大会プログラムおよび講演予稿集　2016　152　2016/09/10
Poly(N‐alkylacrylamide)が水中で形成するラメラ構造の解析とイオニクス材料への展開

江端一輝, 後藤崚介, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

高分子学会予稿集(CD-ROM)　65　(2)　ROMBUNNO.1N15　2016/08/24
加湿アニールによるpoly(N‐dodecyl acrylamide)のラメラ構造化機構

橋本侑宜, 後藤崚介, 長尾祐樹, 山本俊介, 三ツ石方也, 永野修作, 松井淳

高分子学会予稿集(CD-ROM)　65　(2)　ROMBUNNO.1N16　2016/08/24
Superhydrophobic Surfaces of Cellulose Nanofiber Nanoassemblies

BASHAR M. Mahbubul, ZHU Huie, YAMAMOTO Shunsuke, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　65　(2)　ROMBUNNO.1ESB19　2016/08/24
Surface Wettability and Structures of Fluorinated Amphiphilic Polymer Nanoparticles Films

IM Yongjoon, GAO Yu, ZHU Huie, YAMAMOTO Shunsuke, MATSUI Jun, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　65　(2)　ROMBUNNO.3Q10　2016/08/24
Amphiphilic Cyclosiloxane as a Versatile Building Block for Functional 2D and 3D Assemblies

ZHU Huie, AKKUS Buket, LIU Yida, GAO Yu, YAMAMOTO Shunsuke, MATSUI Jun, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　65　(2)　ROMBUNNO.2E05　2016/08/24
Flexible UV detector application using catechol functionalized polysiloxanes

LIU Yida, ZHU Huie, YAMAMOTO Shunsuke, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　65　(2)　ROMBUNNO.1ESB15　2016/08/24
Langmuir‐Blodgett法を用いた機能性ユニットの低次元・高密度集積

山本俊介, 宮下徳治, 三ツ石方也

Molecular Electronics and Bioelectronics　27　(2)　130‐133　2016/05/19

ISSN：2423-8805
Poly(N‐alkylacrylamide)の水環境下における一軸配向ラメラ構造形成に対するアルキル側鎖依存性

江端一輝, 橋本侑宜, 佐藤琢磨, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

高分子学会予稿集(CD-ROM)　65　(1)　ROMBUNNO.1Pd078　2016/05/10
水が誘起するpoly(N‐dodecyl acrylamide)の均一ラメラ構造形成

橋本侑宜, 佐藤琢磨, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

高分子学会予稿集(CD-ROM)　65　(1)　ROMBUNNO.1Pc069　2016/05/10
SERS sensor application of silver nanoparticle assembly induced by catechol functionalized polysiloxane

LIU Yida, DEMIRCI Ali, ZHU Huie, YAMAMOTO Shunsuke, CAI Jinguang, WATANABE Akira, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　65　(1)　ROMBUNNO.3L20　2016/05/10
A Multi-Armed Siloxane Amphiphile: Synthesis and Monolayer Behaviors

ZHU Huie, AKKUS Buket, LIU Yida, YAMAMOTO Shunsuke, MATSUI Jun, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　65　(1)　ROMBUNNO.3L14　2016/05/10
Superhydrophobic Nanoparticles Film Preparation of Pyrene Containing Amphiphilic Fluorinated Copolymers

IM Yongjoon, GAO Yu, ZHU Huie, YAMAMOTO Shunsuke, MATSUI Jun, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　65　(1)　ROMBUNNO.2Pe041　2016/05/10
Fabrication of Cellulose Nanofiber Nanosheets by Langmuir-Blodgett Technique

BASHAR M. Mahbubul, ZHU Huie, YAMAMOTO Shunsuke, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　65　(1)　ROMBUNNO.3K13　2016/05/10
Organic Ferroelectric/Semi-Conductive Hybrid Films towards Resistive Nonvolatile Memory Applications

ZHU Huie, YAMAMOTO Shunsuke, MATSUI Jun, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　65　(1)　ROMBUNNO.3L13　2016/05/10
Facile Catechol-Based Composite Thin film Coating: An Effective SERS Sensor

LIU Yida, DEMIRCI Ali, ZHU Huie, YAMAMOTO Shunsuke, CAI Jinguang, WATANABE Akira, MIYASHITA Tokuji, MITSUISHI Masaya

超分子化学と機能性材料に関する国際シンポジウム2016　34　2016
Organic Resistive Switches Fabricated with Poly(vinylidene fluoride)/Poly(thiophene) Blend Nanosheets

ZHU Huie, YAMAMOTO Shunsuke, MIYASHITA Tokuji, MITSUISHI Masaya

超分子化学と機能性材料に関する国際シンポジウム2016　51　2016
Lamellar structure formation in an amorphous amphiphilic polymer by humidity annealing

HASHIMOTO Yuki, SATO Takuma, MATSUI Jun, NAGANO Shusaku, NAGAO Yuki, YAMAMOTO Shunsuke, MITSUISHI Masaya

化学系学協会東北大会プログラムおよび講演予稿集　2015　122　2015/09/12
加湿アニール法による両親媒性アモルファスポリマーのラメラ構造化

橋本侑宜, 佐藤琢磨, 松井淳, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也

高分子学会予稿集(CD-ROM)　64　(2)　ROMBUNNO.1F17　2015/08/25
Preparation of Cyclosiloxane-Based Polymers with Catecholic Functional Group

LIU Yida, DEMIRCI Ali, YAMAMOTO Shunsuke, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　64　(1)　ROMBUNNO.3K17　2015/05/12
Flexible SiO2 nanofilms assembled on poly(ethylene terephthalate) substrates through a room temperature fabrication process

Shunsuke Yamamoto, Kazuki Sonobe, Masaya Mitsuishi, Tokuji Miyashita

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY　249　2015/03
Publisher: AMER CHEMICAL SOC
ISSN：0065-7727
水が誘起する両親媒性アモルファスポリマーのラメラ構造化

橋本侑宜, 江端一輝, 佐藤琢磨, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

東北大学多元物質科学研究所研究発表会講演予稿集　15th　19　2015
機能性ナノシートの創製と応用ハイブリッド系高分子ナノシート材料の開発

山本俊介, 宮下徳治, 三ツ石方也

化学工業　65　(12)　937-943　2014/12/01
Publisher: 小峰工業出版
ISSN：0451-2014
量子収率200%の光化学反応を目指して

山本俊介

化学　69　(9)　61-62　2014/09
Hybrid Network Polymers Based on Multifunctinal Cyclosiloxane Monomers

DEMIRCI Ali, YAMAMOTO Shunsuke, MITSUISHI Masaya, MIYASHITA Tokuji

高分子学会予稿集(CD-ROM)　63　(1)　ROMBUNNO.2M17　2014/05/09
シルセスキオキサン含有高分子ナノシートの光酸化によるSiO2超薄膜の生成機構とその電気的特性

山本俊介, 園部和輝, 三ツ石方也, 宮下徳治

高分子学会予稿集(CD-ROM)　63　(1)　ROMBUNNO.3PD090　2014/05/09
カルバゾール基を有する両親媒性高分子の単分子膜挙動と高密度集積化

仁科七重, 山本俊介, 三ツ石方也, 宮下徳治

高分子学会予稿集(CD-ROM)　63　(1)　ROMBUNNO.1PH064　2014/05/09
超疎水性フッ素系高分子薄膜による溶存酸素センサーへの応用

GAO Yu, 山本俊介, 三ツ石方也, 宮下徳治

高分子学会予稿集(CD-ROM)　63　(1)　ROMBUNNO.1PB072　2014/05/09
金属回折格子上での高分子ナノ集積体の光伝搬特性

印藤健也, 森田晋平, 山本俊介, 田和圭子, 西井準治, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　63　(1)　ROMBUNNO.1PF090　2014/05/09
ポリエチレングリコール修飾型金ナノクラスターの近赤外発光

永澤匠, 山本俊介, 三ツ石方也

高分子学会予稿集(CD-ROM)　63　(1)　ROMBUNNO.3PD104　2014/05/09
高分子ナノシートをテンプレートとしたSiO2超薄膜の作製

山本俊介, 園部和輝, 三ツ石方也, 宮下徳治

応用物理学会春季学術講演会講演予稿集(CD-ROM)　61st　ROMBUNNO.19P-E5-10　2014/03/03
Polarization Detection by Luminescent Hybrid Polymer Nano-assembly

INDO Kenya, MORITA Simpei, YAMAMOTO Shunsuke, MITSUISHI Masaya, MIYASHITA Tokuji, TAWA Keiko, NISHII Junji

化学系学協会東北大会プログラムおよび講演予稿集　2013　304　2013/09/28
Amphiphilic polymer containing dopamine for hybrid assemblies

UCHIYAMA Shun, YAMAMOTO Shunsuke, MITSUISHI Masaya, MIYASHITA Tokuji

化学系学協会東北大会プログラムおよび講演予稿集　2013　304　2013/09/28
Solvent-dependent monolayer properties of poly(vinylidene fluoride) at the air-water interface

ZHU Huie, YAMAMOTO Shunsuke, MATSUI Jun, MITSUISHI Masaya, MIYASHITA Tokuji

化学系学協会東北大会プログラムおよび講演予稿集　2013　304　2013/09/28
Preparation of Siloxane Based Hybrid Network Polymers

DEMIRCI Ali, YAMAMOTO Shunsuke, MATSUI Jun, MITSUISHI Masaya, MIYASHITA Tokuji

化学系学協会東北大会プログラムおよび講演予稿集　2013　385　2013/09/28
Tunable Ferroelectricity of Highly Oriented PVDF Homopolymer Ultrathin Films from Relaxor-like Ferroelectrics to Ferroelectrics

ZHU Huie, YAMAMOTO Shunsuke, MATSUI Jun, MITSUISHI Masaya, MIYASHITA Tokuji

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　74th　ROMBUNNO.20A-C4-7　2013/08/31
表面プラズモン共鳴/導波モード励起を利用した発光ナノデバイスによる偏光識別

印藤健也, 森田晋平, 山本俊介, 田和圭子, 西井準治, 三ツ石方也, 宮下徳治

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　74th　ROMBUNNO.19P-C4-6　2013/08/31
高分子太陽電池における電荷輸送効率の過渡光電特性解析

児玉卓也, 山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　74th　ROMBUNNO.20P-C6-6　2013/08/31
非晶性高分子薄膜太陽電池における電荷解離機構の解明

山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎, 山本修平, 北澤大輔, 塚本遵

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　74th　ROMBUNNO.18P-C6-14　2013/08/31
高分子/高分子ブレンド太陽電池における開放電圧と界面エネルギー差

小川薫, 山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎, 吉田弘幸

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　74th　ROMBUNNO.20P-C6-7　2013/08/31
多孔性のフッ素系高分子薄膜による発光型酸素センサーへの応用

GAO Yu, 山本俊介, 三ツ石方也, 宮下徳治

高分子学会予稿集(CD-ROM)　62　(2)　ROMBUNNO.1N07　2013/08/28
表面プラズモン/導波モード共存条件を満たした高分子ナノデバイスによる偏光識別

印藤健也, 森田晋平, 山本俊介, 田和圭子, 西井準治, 三ツ石方也, 宮下徳治

高分子学会予稿集(CD-ROM)　62　(2)　ROMBUNNO.2R06　2013/08/28
ポリチオフェン/フラーレンブレンド薄膜における電荷対再結合速度のエネルギーギャップ依存性

和泉谷勇太, 山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　62　(1)　ROMBUNNO.1J29　2013/05/14
高分子/高分子ブレンド太陽電池の高い開放電圧に関する考察

小川薫, 山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　62　(1)　ROMBUNNO.1J25　2013/05/14
チオフェン/フラーレン共重合体膜における電荷生成・再結合

大北英生, 安田裕明, 山本俊介, 辨天宏明, 伊藤紳三郎, 宮西将史, 但馬敬介, 橋本和仁

応用物理学会春季学術講演会講演予稿集(CD-ROM)　60th　ROMBUNNO.29P-G18-5　2013/03/11
チオフェン・フラーレンのミクロ相分離構造における電荷再結合ダイナミクス

安田裕明, 山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎, 宮西将史, 但馬敬介, 橋本和仁

固体・表面光化学討論会講演要旨集　31st　88-89　2012/11/21
狭バンドギャップ高分子薄膜太陽電池における電荷解離機構の解明

山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　61　(2)　ROMBUNNO.3N02　2012/09/05
高分子薄膜太陽電池におけるフラーレンの両極輸送機構

山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎

応用物理学会学術講演会講演予稿集(CD-ROM)　73rd　ROMBUNNO.12P-H1-5　2012/08/27
高分子薄膜太陽電池におけるフラーレンカチオンの生成機構の解明

山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　61　(1)　ROMBUNNO.1PE119　2012/05/15
高分子太陽電池における界面CT状態を経由した電荷生成

大北英生, 山本俊介, 辨天宏明, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　61　(1)　ROMBUNNO.1PF120　2012/05/15
高分子太陽電池の開放電圧と再結合

大北英生, 山本俊介, 織茂亜希子, 辨天宏明, 伊藤紳三郎

応用物理学関係連合講演会講演予稿集(CD-ROM)　59th　ROMBUNNO.17A-F10-11　2012/02/29
狭バンドギャップ高分子太陽電池における光電変換ダイナミクス

山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎

応用物理学会学術講演会講演予稿集(CD-ROM)　72nd　ROMBUNNO.1P-L-12　2011/08/16
高分子薄膜太陽電池の開放電圧を決定づける分子論的機構

山本俊介, 織茂亜希子, 大北英生, 辨天宏明, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　60　(1 Disk1)　ROMBUNNO.1J20　2011/05/10
高分子薄膜太陽電池における開放電圧を決定づける機構

山本俊介, 織茂亜希子, 大北英生, 辨天宏明, 伊藤紳三郎

応用物理学関係連合講演会講演予稿集(CD-ROM)　58th　ROMBUNNO.24P-BD-11　2011/03/09
過渡吸収分光法でみる近赤外高分子薄膜太陽電池におけるフラーレンカチオンの生成ダイナミクス

山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎

光化学討論会講演要旨集　2010　84　2010/09/08
狭バンドギャップ高分子を用いた薄膜太陽電池におけるフラーレンの両極輸送性

山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　59　(2 Disk1)　ROMBUNNO.3I04　2010/09/01
近赤外高分子薄膜太陽電池におけるフラーレンの両極輸送機構の解明

山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎

応用物理学会学術講演会講演予稿集(CD-ROM)　71st　ROMBUNNO.14P-R-7　2010/08/30
狭バンドギャップ高分子を用いた薄膜太陽電池におけるフラーレンカチオンの生成機構

山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　59　(1 Disk1)　ROMBUNNO.1PA093　2010/05/11
高分子太陽電池におけるフラーレンカチオンの生成ダイナミクス

山本俊介, 大北英生, 辨天宏明, 伊藤紳三郎

日本化学会講演予稿集　90th　(2)　440　2010/03/12

ISSN：0285-7626
過渡吸収分光法による高分子薄膜太陽電池におけるフラーレンカチオンの生成ダイナミクスの解明

山本俊介, 辨天宏明, 大北英生, 伊藤紳三郎

固体・表面光化学討論会講演要旨集　28th　51-52　2009/11/21
高分子薄膜太陽電池におけるフラーレン誘導体カチオンの生成機構

山本俊介, 辨天宏明, 大北英生, 伊藤紳三郎

光化学討論会講演要旨集　2009　137　2009/09/16
有機薄膜太陽電池におけるフラーレンの両極輸送機構の解明

山本俊介, 辨天宏明, 大北英生, 伊藤紳三郎

応用物理学会学術講演会講演予稿集　70th　(3)　1162　2009/09/08
過渡吸収分光法による共役高分子‐フラーレンブレンド薄膜におけるフラーレンカチオンの生成機構の解明

山本俊介, GUO Jiamo, 大北英生, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　58　(1 Disk1)　2G13　2009/05/12
薄膜過渡吸収分光法による高分子太陽電池の電荷輸送機構の解明

伊藤紳三郎, 大北英生, 山本俊介, GUO Jiamo

日本化学繊維研究所講演集　66　22-29　2009/03/01
Publisher: 日本化学繊維研究所
ISSN：0368-6280
高分子薄膜太陽電池におけるフラーレンカチオンの生成

大北英生, 山本俊介, GUO Jiamo, 伊藤紳三郎

光化学討論会講演要旨集　2008　403　2008/09/11
高分子薄膜太陽電池におけるフラーレン誘導体が担う正孔キャリアの生成

山本俊介, GUO Jiamo, 大北英生, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　57　(2 Disk1)　2Q10　2008/09/09
高分子薄膜太陽電池におけるフラーレン誘導体の両極輸送性の分光学的証明

山本俊介, GUO Jiamo, 大北英生, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　57　(1 Disk1)　2PD106　2008/05/08
過渡吸収分光法による高分子薄膜太陽電池におけるフラーレン誘導体の両極輸送性に対する検証

山本俊介, GUO Jiamo, 大北英生, 伊藤紳三郎

光化学討論会講演要旨集　2007　79　2007/09/21
有機薄膜太陽電池中でフラーレンはホールを輸送するか?

大北英生, 山本俊介, GUO Jiamo, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　56　(2 Disk1)　2O15　2007/09/04
高感度過渡吸収分光法によるMDMO‐PPV/PCBM有機薄膜太陽電池中に生成した電荷キャリアの観測

山本俊介, GUO Jiamo, 大北英生, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　56　(1 Disk1)　1PH116　2007/05/10
マイクロ・フェムト秒過渡分光法による高分子薄膜太陽電池におけるキャリア生成および電荷再結合ダイナミクスの解明

大北英生, GUO Jiamo, 山本俊介, 伊藤紳三郎

高分子学会予稿集(CD-ROM)　56　(1 Disk1)　3K11R　2007/05/10

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Books and Other Publications 2

元素ブロック高分子―有機・無機ハイブリッド材料の新概念―

三ツ石方也, Ali Demirci, 山本俊介, 宮下徳治

シーエムシー出版　2015/12

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864
光化学の事典

山本俊介

朝倉書店　2014/06

Presentations 130

高分子薄膜ナノ構造制御と高分子系神経模倣素子の開発 Invited

山本俊介

2020年度高分子・ハイブリッド材料研究センター（PHyM）若手フォーラム　2020/10/20
Neuromorphic Devices Based on Polymer Thin-Films Invited

Shunsuke Yamamoto

化学系学協会東北大会　2020/09/27
高分子薄膜を用いた神経模倣素子の作製 Invited

山本俊介

有機固体若手の会 2019冬の学校　2019/12/06
π共役ユニットを有する両親媒性分子の精密集積 Invited

山本俊介

第4回MAIRSワークショップ　2019/12/05
櫛形高分子を元素ブロックとした垂直配向ナノシリンダー形成

松井淳, 松永康平, 永野修作, 山本俊介, 三ツ石方也

第68回高分子討論会　2019/09/26
フェロセン含有高分子電解質交互積層膜の電気伝導性

渡邉暁斗, 山本俊介, 三ツ石方也

第80回応用物理学会秋季学術講演会　2019/09/18
加湿下でのアニールにより形成されるアルキルアクリルアミド高分子のラメラ構造

松井淳, 永野修作, 山本俊介, 三ツ石方也

2019年日本液晶学会討論会　2019/09/06
Monolayer-Level Assembly of Amphiphilic Molecules with π-Conjugated Units

15th European Conference on Molecular Electronics　2019/08/28
Resistive Switching Behavior of Ferrocene-containing Polyelectrolyte Layer-by-Layer Films

Akito Watanabe, Shunsuke Yamamoto, Masaya Mitsushi

2019/06/25
Ion Permeability of Nanoporous SiO2 Films

Yuya Ishizaki, Shunsuke Yamamoto, Tokuji Miyashita, Masaya Mitsuishi

2019/06/25
イオン透過性を有する光酸化SiO2超薄膜の細孔径制御

石崎裕也, 山本俊介, 宮下徳治, 三ツ石方也

第68回高分子学会年次大会　2019/05/30
生体膜類似構造を有する高分子ナノシート電解質の２次元プロトン伝導

塚本真由, 松井淳, 崎山博史, 山本俊介, 宮下徳治, 三ツ石方也

第68回高分子学会年次大会　2019/05/31
フェロセン含有交互積層膜を用いた抵抗変化スイッチ特性

渡邉暁斗, 山本俊介, 三ツ石方也

第68回高分子学会年次大会　2019/05/29
poly(N-dodecylacrylamide)のラメラ構造化に及ぼす分子量・分子量分布の影響

江原晃平, 伊藤祥穂, 鳴海敦, 山本俊介, 三ツ石方也, 永野修作, 松井淳

第68回高分子学会年次大会　2019/05/30
フェロセン修飾高分子電解質超薄膜を用いた抵抗変化スイッチ特性

渡邉暁斗, 山本俊介, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　2019/02/25
シルセスキオキサン含有高分子ナノシートを利用した多孔性SiO2超薄膜の細孔径制御

石崎裕也, 山本俊介, 宮下徳治, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　2019/02/25
ナフタレンジイミド含有デンドリマーナノシートの精密集積

山本俊介, 平嶋奎一郎, 塩谷暢貴, 下赤卓史, 長谷川健, 松井淳, 宮下徳治, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　2019/02/25
高分子薄膜上での金属有機構造体薄膜の結晶成長解析

大原浩明, 山本俊介, 及川英俊, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　2019/02/25
界面ドーピングにおけるπ共役系高分子薄膜とドーパントの相互作用

二俣開, 小野寺恒信, 山本俊介, 三ツ石方也, 及川英俊

東北大学多元物質科学研究所研究発表会講演予稿集　2018/12/13
加湿アニール法によるラメラ構造化の分散度依存性

江原晃平, 伊藤祥穂, 鳴海敦, 山本俊介, 三ツ石方也, 松井淳

東北大学多元物質科学研究所研究発表会講演予稿集　2018/12/13
β-ジケトン含有高分子薄膜上へのZnOナノロッド構築

若井勇騎, 山本俊介, 三ツ石方也

2018年度高分子・ハイブリッド材料研究センター (PHyM) 若手フォーラム　2018/11/19
テトラフェニルエチレンを側鎖に有する両親媒性高分子の合成と単分子膜挙動

馬偉傑, 山本俊介, 宮下徳治, 三ツ石方也

2018年度高分子・ハイブリッド材料研究センター (PHyM) 若手フォーラム　2018/11/19
ナフタレンジイミドを含む両親媒性デンドリマーの精密集積

平嶋奎一郎, 山本俊介, 宮下徳治, 三ツ石方也

2018高分子学会東北支部研究発表会　2018/11/15
高分子テンプレートを用いた多孔性SiO2ナノ薄膜の作製と抵抗変化スイッチ素子への応用

山本俊介

第6回アライアンス若手研究交流会　2018/11/01
Interfacial Nanoassemblies of π-Conjugated Units Invited

Shunsuke Yamamoto, Tokuji Miyashita, Masaya Mitsuishi

18th International Symposium on Advanced Organic Photonics (ISAOP-18)　2018/09/25
Interfacial Nanoassemblies of Functional Nanomaterials Invited

Shunsuke Yamamoto, Tokuji Miyashita, Masaya Mitsuishi

平成30年度化学系学協会東北大会　2018/09/16
界面ドーピングを施したπ共役系高分子薄膜の導電性と分子配列の関係

二俣開, 小野寺恒信, 山本俊介, 三ツ石方也, 及川英俊

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　2018/09/05
フェロセン修飾ポリエチレンイミン交互積層膜を用いた抵抗変化スイッチの作製

渡邉暁斗, 山本俊介, 三ツ石方也

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　2018/09/05
シルセスキオキサン含有高分子ナノシートを前駆体としたSiO2超薄膜のナノ構造制御

石崎裕也, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2018/08/29
生体模を倣膜した高分子電解質の2次元プロトン伝導機構

塚本真由, 松井淳, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2018/08/29
加湿アニールによりくし形高分子が形成する階層構造とその元素ブロックとしての展開

松井淳, 江端一輝, 山本俊介, 三ツ石方也, 永野修作

高分子学会予稿集(CD-ROM)　2018/08/29
近赤外発光性金ナノクラスターの作製と発光挙動

山本俊介, 橋本舞, 永澤匠, 三ツ石方也

高分子学会予稿集(CD-ROM)　2018/08/29
ナノおよびミクロ相分離を用いたブロックコポリマーの構造作製

伊藤祥穂, 松永康平, 松井淳, 山本俊介, 三ツ石方也, 永野修作, 藪浩

高分子学会予稿集(CD-ROM)　2018/08/29
Lamellar film formation in comb-shape polymers by humid annealing

伊藤祥穂, 松井淳, 山本俊介, 三ツ石方也, 永野修作

日本液晶学会討論会講演予稿集(CD-ROM)　2018/08/20
A Bio-inspired Supramolecular Adhesive

Huie Zhu, Ali Demirci, Shunsuke Yamamoto, Masaya Mitsuishi

The 43rd International Conference on Coordination Chemistry (ICCC2018)　2018/08/03
Fabrication of Polymer Nanosheets with Bithiophene Units

Shunsuke Yamamoto, Tomohiro Ikemoto, Rie Matsui, Takafumi Shimoaka, Takeshi Hasegawa, Tomoyuki Koganezawa, Jun Matsui, Tokuji Miyashita, Masaya Mitsuishi

17th International Conference on Organized Molecular Films　2018/07/25
フェロセン修飾ポリエチレンイミンの交互吸着膜を用いた抵抗変化スイッチの作製

渡邉暁斗, 山本俊介, 三ツ石方也

第46回東北地区高分子若手研究会夏季ゼミナール　2018/07/06
単分子膜形成可能なナフタレンジイミドを有する両親媒性分子の検討

平嶋奎一郎, 山本俊介, 宮下徳治, 三ツ石方也

第46回東北地区高分子若手研究会夏季ゼミナール　2018/07/06
シルセスキオキサン含有高分子ナノシートを前駆体としたSiO2超薄膜の構造制御

石﨑裕也, 山本俊介, 宮下徳治, 三ツ石方也

第46回東北地区高分子若手研究会夏季ゼミナール　2018/07/06
Enhanced Electroactive Phase Formation in Poly(vinylidene fluoride) Nanoparticles Using Good/Poor Solvent Environments

Chang Fu, Huie Zhu, Shunsuke Yamamoto, Masaya Mitsuishi

World Polymer Congress MACRO18　2018/07/03
Room-Temperature Fabrication of Porous SiO2 Nanofilms from Silsesquioxane-Containing Polymer Nanosheets

Yuya Ishizaki, Shunsuke Yamamoto, Tokuji Miyashita, Masaya Mitsuishi

World Polymer Congress MACRO18　2018/07/03
Cyclosiloxane Derived Supramolecules: Synthesis and Applications

Huie Zhu, Buket Akkus, Shunsuke Yamamoto, Tokuji Miyashtia, Masaya Mitsuishi

高分子・ハイブリッド材料研究センター 2018 年度シンポジウム　2018/06/19
気水界面を用いた機能性材料の精密集積

山本俊介, 宮下徳治, 三ツ石方也

高分子・ハイブリッド材料研究センター 2018 年度シンポジウム　2018/06/19
Amphiphilic Cyclosiloxane Supramolecules as Versatile Building Blocks for Hierarchical Self-Assemblies

Huie Zhu, Tillman Jan Buchtal, Shunsuke Yamamoto, Ali Demirci, Tokuji Miyashtia, Masaya Mitsuishi

The 13th International Symposium on Polymer Physics (PP’2018)　2018/06/12
高分子超薄膜を用いた有機無機ハイブリッド材料の精密ナノ集積

山本俊介

Molecular Electronics and Bioelectronics　2018/06/05
Surface Wettability and Nanostructure Formation of Fluorinated Polymer Self-Assemblies

IM Yongjoon, GAO Yu, ZHU Huie, YAMAMOTO Shunsuke, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　2018/05/08
Cyclosiloxane Derived Supramolecules for Advanced Coatings and Adhesives

ZHU Huie, BUCHTAL Tillman Jan, YAMAMOTO Shunsuke, DEMIRCI Ali, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　2018/05/08
Soft and Compressible Self-healing Polycyclosiloxanes Based on Siloxane Equilibrations

DEMIRCI Ali, ZHU Huie, YAMAMOTO Shunsuke, MIYASHITA Tokuji, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　2018/05/08
Superhydrophobic Cellulose Nanofiber Surface Assembly for Oil-Water Separation

BASHAR M. Mahbubul, ZHU Huie, YAMAMOTO Shunsuke, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　2018/05/08
Preparation and characterization of Poly(vinylidene fluoride) nanoparticles

FU Chang, ZHU Huie, YAMAMOTO Shunsuke, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　2018/05/08
両親媒性アクリルアミド系ブロック共重合体の合成と水面上単分子膜挙動

山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2018/05/08
シルセスキオキサン含有ブロック共重合体LB膜をテンプレートとした多孔性SiO2超薄膜の作製

石崎裕也, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2018/05/08
フェロセン修飾ポリエチレンイミンの合成と交互積層膜の作製

渡邉暁斗, 山本俊介, 三ツ石方也

高分子学会予稿集(CD-ROM)　2018/05/08
単分子膜形成可能なナフタレンジイミドを含む両親媒性分子の検討

平嶋奎一郎, 山本俊介, 松井淳, 三ツ石方也

高分子学会予稿集(CD-ROM)　2018/05/08
β‐ジケトン含有高分子薄膜上へのZnOナノロッド成長

若井勇騎, 山本俊介, 三ツ石方也

高分子学会予稿集(CD-ROM)　2018/05/08
加湿アニール法による両親媒性高分子のラメラ構造化における分子量依存性

江端一輝, 橋本侑宜, 山本俊介, 三ツ石方也, 松井淳, 松井淳

高分子学会予稿集(CD-ROM)　2018/05/08
最先端ナノ粒子の創製と応用高分子超薄膜をテンプレートとしたナノ粒子集積

三ツ石方也, LIU Yida, ALI Demirci, ZHU Huie, 山本俊介, 宮下徳治

ケミカルエンジニヤリング　2018/04/01
ビチオフェン含有高分子ナノシートの構造解析

山本俊介, 池元智拾, 下赤卓史, 長谷川健, 小金澤智之, 宮下徳治, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　2018/03/05
π共役高分子薄膜の界面ドーピングに伴う導電特性と結晶性の変化

二俣開, 小野寺恒信, 山本俊介, 三ツ石方也, 及川英俊

応用物理学会春季学術講演会講演予稿集(CD-ROM)　2018/03/05
生体膜を模倣した高分子電解質の2次元プロトン伝導

塚本真由, 松井淳, 山本俊介, 宮下徳治, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　2018/03/05
Spontaneous formation of poly(vinylidene fluoride) nanoparticles with dominant electroactive phase

FU Chang, ZHU Huie, YAMAMOTO Shunsuke, ONODERA Tsunenobu, OIKAWA Hidetoshi, MITSUISHI Masaya

超分子化学と機能性材料に関する国際シンポジウム2018　2018
Amphiphilic Cyclosiloxane Supramolecules toward Unique Self-Assembly Nanostructures

ZHU Huie, BUCHTAL Tillman Jan, YAMAMOTO Shunsuke, MIYASHITA Tokuji, MITSUISHI Masaya

超分子化学と機能性材料に関する国際シンポジウム2018　2018
加湿アニール法により両親媒性高分子が形成する一軸配向ラメラ構造を用いた異方イオン伝導

江端一輝, 後藤崚介, 長尾祐樹, 山本俊介, 三ツ石方也, 永野修作, 松井淳

固体イオニクス討論会講演要旨集　2017/12/05
Structure of hybrid nanoplate composed of amphiphilic polyhedral oligomeric silsesquioxane

AKATSUKA Asami, ZHU Huie, YAMAMOTO Shunsuke, MITSUISHI Masaya, MIYASHITA Tokuji, GEMMEI‐IDE Makoto, NAGANO Shusaku, MATSUI Jun

化学系学協会東北大会プログラムおよび講演予稿集　2017/09/16
PEGエステル基を有するテトラフェニルエチレン:凝集特性を示すAIE液体

武田貴志, 山本俊介, 三ツ石方也, 芥川智行

基礎有機化学討論会要旨集　2017/09/07
A Mussel-Inspired Cyclosiloxane Supramolecule for Air-Stable Self-Assembly Coatings

ZHU Huie, YAMAMOTO Shunsuke, MITSUISHI Masaya

高分子学会予稿集(CD-ROM)　2017/09/06
高分子ナノシート積層体が形成する2次元ナノ空間を利用したプロトン伝導膜の作製

塚本真由, 松井淳, 永野修作, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2017/09/06
加湿アニール法を用いた両親媒性高分子の高配向ラメラ構造膜とその異方イオン伝導

江端一輝, 後藤崚介, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

高分子学会予稿集(CD-ROM)　2017/09/06
シルセスキオキサン含有ブロック共重合体高分子ナノシートを利用したSiO2超薄膜の作製

石崎裕也, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2017/09/06
高分子チタン錯体超薄膜の光酸化によって作製する酸化物複合積層膜

山本俊介, 小野亜沙美, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2017/09/06
加湿アニール法を用いたpoly(N‐dodecyl acrylamide)‐b‐poly(ethylene glycol)薄膜におけるナノ相分離構造の構築

松永康平, 松井淳, 山本俊介, 三ツ石方也, 永野修作

高分子学会予稿集(CD-ROM)　2017/09/06
π共役系ユニット含有高分子ナノシートの構造解析

山本俊介, 仁科七重, 太田昇, 宮下徳治, 三ツ石方也

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　2017/08/25
加湿アニール法を用いた非晶性高分子ブロックからなる両親媒性高分子によるナノ相分離構造薄膜の作製

松永康平, 松井淳, 山本俊介, 三ツ石方也, 永野修作

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　2017/08/25
高分子薄膜中のリポ酸修飾型金ナノクラスターの発光特性

橋本舞, 永澤匠, 山本俊介, 三ツ石方也

高分子学会予稿集(CD-ROM)　2017/05/15
高分子ナノシートから作製したSiO2超薄膜の抵抗変化スイッチング

山本俊介, 北中孝尚, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2017/05/15
ビチオフェンを側鎖に有する両親媒性高分子の合成と単分子膜挙動

池元智拾, 松井理恵, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2017/05/15
加湿アニール法による高配向ラメラ構造膜の構築とイオン伝導材料への応用

江端一輝, 橋本侑宜, 後藤峻介, 長尾祐樹, 山本俊介, 三ツ石方也, 永野修作, 永野修作, 松井淳

高分子学会予稿集(CD-ROM)　2017/05/15
ホスホン酸基を導入した高分子ナノシートの二次元界面におけるプロトン伝導

塚本真由, 江端一輝, 松井淳, 山本俊介, 三ツ石方也, 宮下徳治

高分子学会予稿集(CD-ROM)　2017/05/15
高分子薄膜上への金属有機構造体ナノ薄膜の積層と結晶成長制御

大原浩明, 山本俊介, ZHU Huie, 及川英俊, 三ツ石方也

高分子学会予稿集(CD-ROM)　2017/05/15
シルセスキオキサンを有する両親媒性ブロック共重合体Langmuir Blodgett膜の作製

石崎裕也, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2017/05/15
PEG化両親媒性高分子の加湿アニール法による配向挙動

松永康平, 山本俊介, 三ツ石方也, 松井淳

日本化学会春季年会講演予稿集(CD-ROM)　2017/03/03
poly(N‐alkylacrylamides)が水中で形成するラメラ構造を用いたイオン伝導材料

江端一輝, 後藤崚介, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

日本化学会春季年会講演予稿集(CD-ROM)　2017/03/03
両親媒性かご型シルセスキオキサンを用いたハイブリッドナノプレートの構築

赤塚亜紗美, ZHU Huie, 山本俊介, 三ツ石方也, 宮下徳治, 松井淳

日本化学会春季年会講演予稿集(CD-ROM)　2017/03/03
高分子薄膜上への金属有機構造体薄膜の成長制御

大原浩明, 山本俊介, ZHU Huie, 及川英俊, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　2017/03/01
側鎖型共役高分子の低次元・高密度集積化

池元智拾, 松井理恵, 山本俊介, 宮下徳治, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　2017/03/01
ピレン含有フッ素系両親媒性高分子ナノ粒子薄膜の発光特性

IM YOngjoon, ZHU Huie, 山本俊介, 松井淳, 宮下徳治, 三ツ石方也

光化学討論会要旨集(CD-ROM)　2017
PEGエステル基を有するテトラフェニルエチレン:凝集特性を示すAIE液体

武田貴志, 山本俊介, 三ツ石方也, 芥川智行

分子科学討論会講演プログラム&要旨(Web)　2017
Poly(N‐alkylacrylamide)が水の刺激で構築するラメラ構造

江端一輝, 橋本侑宜, 後藤崚介, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

ポリマー材料フォーラム講演予稿集　2016/10/26
金ナノクラスター分散高分子膜の作製と発光挙動

山本俊介, 永澤匠, 三ツ石方也

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　2016/09/01
環状シロキサン系ハイブリッドポリマー薄膜の構築

三ツ石方也, ZHU Huie, 山本俊介, 宮下徳治

日本セラミックス協会秋季シンポジウム講演予稿集(CD-ROM)　2016/08/29
加湿アニールによるpoly(N‐dodecyl acrylamide)のラメラ構造化機構

橋本侑宜, 後藤崚介, 長尾祐樹, 山本俊介, 三ツ石方也, 永野修作, 松井淳

高分子学会予稿集(CD-ROM)　2016/08/24
高分子ナノシートをテンプレートとした金属有機構造体ナノ薄膜の構築

大原浩明, 山本俊介, 小野寺恒信, 笠井均, 及川英俊, 宮下徳治, 太田昇, 三ツ石方也

高分子学会予稿集(CD-ROM)　2016/08/24
高分子チタン錯体をテンプレートとした酸化チタン超薄膜のマイクロパターン形成

小野亜沙美, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2016/08/24
Poly(N‐alkylacrylamide)が水中で形成するラメラ構造の解析とイオニクス材料への展開

江端一輝, 後藤崚介, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

高分子学会予稿集(CD-ROM)　2016/08/24
高分子ナノシートをテンプレートとした金属有機構造体のナノ積層

大原浩明, 山本俊介, 小野寺恒信, 笠井均, 及川英俊, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2016/05/10
水が誘起するpoly(N‐dodecyl acrylamide)の均一ラメラ構造形成

橋本侑宜, 佐藤琢磨, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

高分子学会予稿集(CD-ROM)　2016/05/10
チタンを含む高分子超薄膜の作製と光酸化による酸化チタン超薄膜化

小野亜沙美, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2016/05/10
カテコール基含有高分子ナノシートのナノ粒子に対する多様な吸着モード

山本俊介, 内山駿, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2016/05/10
Poly(N‐alkylacrylamide)の水環境下における一軸配向ラメラ構造形成に対するアルキル側鎖依存性

江端一輝, 橋本侑宜, 佐藤琢磨, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

高分子学会予稿集(CD-ROM)　2016/05/10
交互吸着法による高分子ナノシート上への金属有機構造体の構築

大原浩明, 山本俊介, 小野寺恒信, 笠井均, 及川英俊, 宮下徳治, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　2016/03/03
π共役系ユニットの低次元・高密度集積化

山本俊介, 仁科七重, 松井淳, 宮下徳治, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　2016/03/03
RAFT重合を利用したシルセスキオキサン誘導体を有するブロック共重合体の合成

石崎裕也, 山本俊介, 宮下徳治, 三ツ石方也

東北大学多元物質科学研究所研究発表会講演予稿集　2016
ホスホン酸基を導入した高分子LB膜の作製とそのプロトン伝導

塚本真由, 江端一輝, 山本俊介, 三ツ石方也, 松井淳

東北大学多元物質科学研究所研究発表会講演予稿集　2016
加湿アニール法による両親媒性アモルファスポリマーのラメラ構造化

橋本侑宜, 佐藤琢磨, 松井淳, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也

高分子学会予稿集(CD-ROM)　2015/08/25
フッ素系高分子ナノシートのフォトパターンおよび表面濡れ性の考察

GAO Yu, ZHU Huie, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2015/08/25
両親媒性を利用したπ共役系高分子超薄膜の作製とその特性

仁科七重, 山本俊介, 松井淳, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2015/08/25
チオール配位子を用いた金ナノクラスターの構築および発光特性

永澤匠, 山本俊介, 三ツ石方也

高分子学会予稿集(CD-ROM)　2015/08/25
フッ素系両親媒性高分子薄膜のナノ空間を利用した高感度溶存酸素センサーへの応用

GAO Yu, ZHU Huie, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2015/08/25
π共役系ユニットを含む両親媒性高分子の単分子膜集積とその特性

仁科七重, 山本俊介, 松井淳, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2015/05/12
銀回折格子基板上の高分子ナノ集積体を利用した発光機能

印藤健也, 森田晋平, 山本俊介, 田和圭子, 西井準治, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2015/05/12
高分子ナノシートから作製したSiO2超薄膜の抵抗変化メモリへの応用

北中孝尚, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2015/05/12
両親媒性高分子チタン錯体の合成と単分子膜作製

小野亜沙美, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2015/05/12
フラーレンを含む両親媒性高分子の合成と精密集積化

今野博貴, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2015/05/12
カテコール基含有高分子ナノシートの無機ナノ微粒子に対する吸着特性

山本俊介, 内山駿, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2015/05/12
チオール系修飾剤を利用した水溶性金ナノクラスターの作製

永澤匠, 山本俊介, 三ツ石方也

高分子学会予稿集(CD-ROM)　2015/05/12
高分子ナノシートから作製したSiO2超薄膜の抵抗変化動作

北中孝尚, 山本俊介, 宮下徳治, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　2015/02/26
カテコール基含有高分子ナノシート上へのナノ微粒子の吸着制御

山本俊介, 内山駿, 宮下徳治, 三ツ石方也

応用物理学会春季学術講演会講演予稿集(CD-ROM)　2015/02/26
水が誘起する両親媒性アモルファスポリマーのラメラ構造化

橋本侑宜, 江端一輝, 佐藤琢磨, 永野修作, 長尾祐樹, 山本俊介, 三ツ石方也, 松井淳

東北大学多元物質科学研究所研究発表会講演予稿集　2015
高分子ナノシートをテンプレートとした金属有機構造体のハイブリッドナノ積層

大原浩明, 山本俊介, 小野寺恒信, 笠井均, 及川英俊, 宮下徳治, 三ツ石方也

東北大学多元物質科学研究所研究発表会講演予稿集　2015
カルバゾール基を含む両親媒性高分子の合成と高密度集積化

仁科七重, 山本俊介, 三ツ石方也, 宮下徳治

化学系学協会東北大会プログラムおよび講演予稿集　2014/09/20
環状シロキサンモノマーを用いたハイブリッドネットワーク高分子薄膜の作製

三ツ石方也, DEMIRCI Ali, 山本俊介, 宮下徳治

高分子学会予稿集(CD-ROM)　2014/09/03
シルセスキオキサン含有高分子ナノシートを用いたSiO2超薄膜のフレキシブル基板上への作製

山本俊介, 園部和輝, 三ツ石方也, 宮下徳治

高分子学会予稿集(CD-ROM)　2014/09/03
超撥水性表面による溶存酸素センサーの高感度化

GAO Yu, 山本俊介, 宮下徳治, 三ツ石方也

高分子学会予稿集(CD-ROM)　2014/09/03
近赤外領域で発光を示すポリエチレングリコール修飾型金ナノクラスターの作製

永澤匠, 山本俊介, 三ツ石方也

高分子学会予稿集(CD-ROM)　2014/09/03
カルバゾール基を有する両親媒性高分子の合成と高密度集積化の検討

仁科七重, 山本俊介, 三ツ石方也, 宮下徳治

高分子学会予稿集(CD-ROM)　2014/09/03
一次元金属回折格子上での高分子ナノ集積体中の光の伝搬特性

印藤健也, 森田晋平, 山本俊介, 田和圭子, 西井準治, 宮下徳治, 三ツ石方也

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　2014/09/01
高分子ナノシートの光酸化による室温・大気圧下でのSiO2超薄膜の作製

山本俊介, 園部和輝, 三ツ石方也, 宮下徳治

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　2014/09/01
シルセスキオキサン含有高分子ナノシートから作製するSiO2超薄膜

山本俊介, 園部和輝, 三ツ石方也, 宮下徳治

高分子学会予稿集(CD-ROM)　2013/08/28
ドーパミンを含む高分子ナノシートによるハイブリッド集積に関する考察

内山駿, 山本俊介, 三ツ石方也, 宮下徳治

高分子学会予稿集(CD-ROM)　2013/08/28
チオフェン‐フラーレンブロック共重合体のミクロ相分離構造における電荷生成・再結合

大北英生, 安田裕明, 山本俊介, 辨天宏明, 伊藤紳三郎, 宮西将史, 但馬敬介, 橋本和仁

高分子学会予稿集(CD-ROM)　2013/08/28

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Industrial Property Rights 3

環状シロキサン化合物、環状シロキサン膜、ナノ構造体の製造方法およびSiO2超薄膜

三ツ石方也, 朱慧娥, 山本俊介, 宮下徳治

Property Type: Patent
酸化チタンナノ構造体の製造方法

山本俊介, 三ツ石方也, 宮下徳治, 小野亜沙美

Property Type: Patent
抵抗変化メモリ素子および抵抗変化メモリ素子の製造方法

山本俊介, 三ツ石方也, 宮下徳治, 北中孝尚

Property Type: Patent

Research Projects 7

Structure-property relationship in mixed conducting polymers

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2021/04/01 - 2024/03/31
Fabrication of Artificial Synaptic Devices Based on Polymer Ultra-Thin Films

Shunsuke Yamamoto

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Early-Career Scientists

Category: Grant-in-Aid for Early-Career Scientists

Institution: Tohoku University

2018/04/01 - 2021/03/31

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This study focused on two types of devices (a) resistive switch type and (b) electrochemical transistor type to create an "artificial synaptic device" that mimics the transmission of information in the nerve and brain. As a result, we found that the neuromorphic behavior of (a) can be realized by using layer-by-layer film using redox-active polymer. In (b), we estimated the "information retention time", which is an index of neuromorphic behavior, using an active layer of conductive polymer mixed with an ion-conductive polymer. As a result, we found that the information retention time of the device became shorter on the addition of the ion-conductive polymer, indicating that the response speed of the neuromorphic device can be freely controlled.
Bottom-up Hybrid Nanocoating of Cyclosiloxane Polymer

Mitsuishi Masaya, YAMAMOTO Shunsuke, ZHU Huie, ALI Demirci, LIU Yida, KIM Soyeon, ISHIZAKI Yuya

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2016/04/01 - 2019/03/31

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Cyclosiloxanes serve as multifunctional building blocks in this project. Boronic acid containing and catechol containing cyclosiloxane polymers were synthesized through one-pot two step hydrosilylation reaction. Dip-coating of these polymers showed good film forming ability on various organic and inorganic substrates. A crystalline tetramethylcyclotetrasiloxane (TMCS)-derived amphiphile was synthesized with eight peripheral hydrophilic amide groups and hydrophobic dodecyl chains by hydrosilylation and amidation reactions. The as-synthesized materials form nanofibers spontaneously by good－poor solvent strategies, which contributes to porous three-dimensional (3D) structures possessing superhydrophobic surface wettability.
Superhydrophobic Surfaces for High Sensitive Dissolved Gas Sensing and Effective Liquid Separation

Mitsuishi Masaya, YAMAMOTO Shunsuke, ZHU Huie, GAO Yu, IM YongJoon

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

Category: Grant-in-Aid for Challenging Exploratory Research

Institution: Tohoku University

2015/04/01 - 2017/03/31

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Polymer nanoparticle films were prepared by dropcasting a mixed solution of amphiphilic fluorinated polymers. The film consisted of nanoparticles with several hundreds nanometer diameters. The surface exhibited interesting surface wettablitity: it has a contact angle of 162, 53, and 4 (deg) for water, hexane, and methanol, respectively. To demonstrate solvent separation, further work is required to improve the film mechanical strength.
Low-dimensional Assembly of pi-Conjugated Units

Yamamoto Shunsuke

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

Category: Grant-in-Aid for Young Scientists (B)

Institution: Tohoku University

2014/04/01 - 2017/03/31

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We fabricated ultra-thin films consisting of highly ordered π-conjugated functional groups. Carbazole-containing polymer pCzAA was prepared by free radical polymerization of amphiphilic monomer with amide groups. For the pCzAA, only a small amount (less than 20 mol%) of amphiphilic polymer, poly(N-dodecylacrylamide), (pDDA), which has long alkyl chains as a hydrophobic part, enhances the pCzAA monolayer stability. This high mixing ratio of pCzAA to pDDA (90 mol%) exceeds the percolation threshold in the two-dimensional plane (45 mol%), which assures a charge transport pathway in the in-plane direction. pCzAA:pDDA blend monolayers were transferred onto various substrates over 80 layers in high order. X-ray reflectivity measurements revealed that pCzAA:pDDA films had a highly ordered layered structure. Therefore, we conclude that the dimension control from 2D to 3D of π-conjugated unit nanoassemblies was realized by LB technique with acrylamide-based polymers with π-conjugated units.
Nonlinear Dynamics of Hybrid Polymer Nanoassemblies

MITSUISHI Masaya, YAMAMOTO Shunsuke

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

Category: Grant-in-Aid for Scientific Research (B)

Institution: Tohoku University

2012/04/01 - 2015/03/31

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Ferroelectric polymer, poly(vinylidene fluoride) (PVDF) ultrathin films were prepared by the Langmuir-Blodgett technique. The film consists of high content of beta crystalline phases generated at the air-water interface. With the help of amphiphilic polymer poly(N-dodecylacrylamide), the films were successfully transferred on solid substrates by the vertical dipping method. Silsesquioxane polymer nanosheets were converted into SiO2 nanofilms on flexible substrates through UV irradiation at ambient condition. Reversible conductivity switching was also demonstrated.
高分子薄膜太陽電池におけるフラーレン誘導体の両極輸送機構の解明

山本俊介

Offer Organization: 日本学術振興会

System: 科学研究費助成事業特別研究員奨励費

Category: 特別研究員奨励費

Institution: 京都大学

2009 - 2011

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共役高分子であるpoly(ρ-phenylenevinylene)誘導体(MDMO-PPV)とフラーレン誘導体(PCBM)を用いたブレンド膜のマイクロ秒領域における過渡吸収測定を行った。その結果、フラーレン濃度が高い系では、電荷種として従来考えられてきた共役高分子正孔ポーラロン、フラーレンアニオンに加えて、さらにフラーレンカチオンも生成していることを見出した。すなわち、これまで電子輸送のみを担うと考えられてきたフラーレンが電子のみならず正孔をも輸送していることを分光的に初めて明らかにした。これは有機薄膜太陽電池におけるフラーレンの両極輸送性を実証した初めての例である。さらに上述のフラーレンカチオンの生成機構を解明するため、イオン化ポテンシャルの異なる種々の共役高分子を用いて、ナノ秒からミリ秒にわたる広時間帯域の過渡吸収分光法により電荷種の生成過程と分率の測定を行った。その結果、フラーレンカチオンは共役高分子からフラーレンへの正孔注入によって生成していることを明らかにした。また、フラーレンカチオンの平衡分率は用いる共役高分子のイオン化ポテンシャルの大きさによって決定されることから、正孔注入はフラーレンHOMO準位の広いバンド幅と大きな縮退度によって起きていることを明らかにした。この研究では、高分子薄膜太陽電池の光電変換機能において重要な役割を果たしている共役高分子/フラーレン接合界面での電荷の輸送機構を、過渡吸収分光法を駆使して解明してきた。このことは有機薄膜太陽電池では界面の物性が重要な役割を担っていることを示しており、有機トランジスタなどバルク物性が重要な役割を果たす他の有機電子デバイスとは異なる有機薄膜太陽電池のならではの特徴を示すことができた。この研究は高分子薄膜太陽電池の動作素過程に新たな物理的描像を与え、理解を深めるという学術上の成果のみならず、高分子薄膜太陽電池の設計指針を提示するという応用上寄与するところも少なくない。

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