Details of the Researcher

PHOTO

Takahiro Ami
Section
Institute of Multidisciplinary Research for Advanced Materials
Job title
Specially Appointed Assistant Professor(Research)
Degree

  • Ph.D. in Engineering (Tohoku University)

Research History 2

  • 2026/04 - Present
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials

  • 2024/04 - 2026/03
    Japan Society for the Promotion of Science

Education 4

  • Tohoku University　Graduate School of Engineering　Department of Biomolecular Engineering

    2024/04 - Present

  • Osaka University　Graduate School of Engineering

    2023/04 - 2024/03

  • Osaka University　Graduate School of Engineering

    2021/04 - 2023/03

  • Osaka University　School of Engineering

    2017/04 - 2021/03

Research Interests 5

  • プロトン伝導

  • フッ素化ナノ空間

  • ガス分離

  • Supramolecular Chemistry

  • Porous Organic Salts

Research Areas 3

  • Nanotechnology/Materials / Structural/physical organic chemistry /

  • Nanotechnology/Materials / Crystal engineering /

  • Nanotechnology/Materials / Organic functional materials /

Awards 5

  1. 最優秀講演賞

    2023/11　有機結晶部会　多孔質有機塩における高フッ素化ナノ空間の形成と高湿環境下におけるプロトン伝導特性

  2. フォーカスシステムズ賞

    2022/08　フォーカスシステムズ　超異分野学会 大阪大会2022

  3. 優秀ポスター賞

    2022/06　公共社会法人 新科学技術推進協会　第11回JACI/GSCシンポジウム

  4. 感謝状

    2022/03　株式会社リバネス

  5. 優秀ポスター賞

    2021/06　有機結晶部会　第29回有機結晶シンポジウム

Papers 14

  1. Inside front cover Peer-reviewed

    Journal of Materials Chemistry A　14　(7)　3706-3706　2026

    Publisher: Royal Society of Chemistry (RSC)

    DOI： 10.1039/d6ta90036d 　

    ISSN： 2050-7488

    eISSN： 2050-7496

  2. Proton conductivity of mesoporous aluminum organophosphonate enhanced by the affinity of an integral organic linker to water molecules Peer-reviewed

    Takahiro Ami, Kouki Oka, Hitoshi Kasai, Tatsuo Kimura

    Journal of Materials Chemistry A　2026

    Publisher: Royal Society of Chemistry (RSC)

    DOI： 10.1039/d5ta10085b 　

    ISSN： 2050-7488

    eISSN： 2050-7496

    More details Close

    Aluminum organophosphonate (AOP)-type mesoporous materials with a superprotonic conductivity of 1.31 × 10 −2 S cm −1 under 95% RH at 90 °C were prepared using Pluronic P123 through the rational design to place abundant –OH groups over organic linker.

  3. Proton conductivity at the controlled hydrophilic and hydrophobic surfaces of mesoporous aluminum organophosphonates Peer-reviewed

    Takahiro Ami, Kouki Oka, Hitoshi Kasai, Tatsuo Kimura

    Journal of Materials Chemistry A　2026

    Publisher: Royal Society of Chemistry (RSC)

    DOI： 10.1039/d5ta06982c 　

    ISSN： 2050-7488

    eISSN： 2050-7496

    More details Close

    Aluminum organophosphonate (AOP)-type mesoporous materials were prepared using Pluronic P123, clearly demonstrating temperature-dependent control of the proton/water transport rate and the mechanism by adjusting the kind of organic linker.

  4. Front cover Peer-reviewed

    Chemical Communications　61　(8)　1473-1473　2025

    Publisher: Royal Society of Chemistry (RSC)

    DOI： 10.1039/d5cc90031j 　

    ISSN： 1359-7345

    eISSN： 1364-548X

  5. Developing porous electrocatalysts to minimize overpotential for the oxygen evolution reaction Peer-reviewed

    Takahiro Ami, Kouki Oka, Hitoshi Kasai, Tatsuo Kimura

    Chemical Communications　2025

    Publisher: Royal Society of Chemistry (RSC)

    DOI： 10.1039/d4cc05348f 　

    ISSN： 1359-7345

    eISSN： 1364-548X

    More details Close

    This feature article mainly outlines the advances in the precise design of inorganic- and organic-based porous electrocatalysts towards the enhancement of oxygen evolution reaction (OER) properties to achieve efficient water-splitting reaction.

  6. Highly Fluorinated Nanospace in Porous Organic Salts with High Water Stability/Capability and Proton Conductivity Peer-reviewed

    Takahiro Ami, Showa Kitajima, Kouki Oka, Norimitsu Tohnai

    Angewandte Chemie　2024/06/20

    Publisher: Wiley

    DOI： 10.1002/ange.202407484 　

    ISSN： 0044-8249

    eISSN： 1521-3757

    More details Close

    Water in hydrophobic nanospaces shows specific dynamic properties different from bulk water. The investigation of these properties is important in various research fields, including materials science, chemistry, and biology. The elucidation of the correlation between properties of water and hydrophobic nanospaces requires nanospaces covered only with simple hydrophobic group (e.g., fluorine) without impurities such as metals. This work successfully fabricated all‐organic diamondoid porous organic salts (d‐POSs) with highly fluorinated nanospaces, wherein hydrophobic fluorine atoms are densely exposed on the void surfaces, by combining fluorine substituted triphenylmethylamine (TPMA) derivatives with tetrahedral tetrasulfonic acid. This d‐POSs with a highly fluorinated nanospace significantly improved their water stability, retaining their crystal structure even when immersed in water over one week. Moreover, this highly hydrophobic and fluorinated nanospace adsorbs 160 mL(STP)/g of water vapor at Pe/P0 = 0.90; this is the first hydrophobic nanospace, which water molecules can enter, in an all‐organic porous material. Furthermore, this highly fluorinated nanospace exhibits very high proton conductivity (1.34 × 10−2 S/cm) at 90°C and 95%RH. POSs with tailorable nanospaces may significantly advance the elucidation of the properties of specific “water” in pure hydrophobic environments.

  7. Highly Fluorinated Nanospace in Porous Organic Salts with High Water Stability/Capability and Proton Conductivity Peer-reviewed

    Takahiro Ami, Showa Kitajima, Kouki Oka, Norimitsu Tohnai

    Angewandte Chemie International Edition　2024/06/20

    Publisher: Wiley

    DOI： 10.1002/anie.202407484 　

    ISSN： 1433-7851

    eISSN： 1521-3773

    More details Close

    Water in hydrophobic nanospaces shows specific dynamic properties different from bulk water. The investigation of these properties is important in various research fields, including materials science, chemistry, and biology. The elucidation of the correlation between properties of water and hydrophobic nanospaces requires nanospaces covered only with simple hydrophobic group (e.g., fluorine) without impurities such as metals. This work successfully fabricated all‐organic diamondoid porous organic salts (d‐POSs) with highly fluorinated nanospaces, wherein hydrophobic fluorine atoms are densely exposed on the void surfaces, by combining fluorine substituted triphenylmethylamine (TPMA) derivatives with tetrahedral tetrasulfonic acid. This d‐POSs with a highly fluorinated nanospace significantly improved their water stability, retaining their crystal structure even when immersed in water over one week. Moreover, this highly hydrophobic and fluorinated nanospace adsorbs 160 mL(STP)/g of water vapor at Pe/P0 = 0.90; this is the first hydrophobic nanospace, which water molecules can enter, in an all‐organic porous material. Furthermore, this highly fluorinated nanospace exhibits very high proton conductivity (1.34 × 10−2 S/cm) at 90°C and 95%RH. POSs with tailorable nanospaces may significantly advance the elucidation of the properties of specific “water” in pure hydrophobic environments.

  8. Cation Recognition by Dibenzoarsacrowns Peer-reviewed

    Kenta Ogawa, Akifumi Sumida, Takahiro Ami, Kouki Oka, Norimitsu Tohnai, Yusuke Miyake, Hiroaki Imoto, Kensuke Naka

    Asian Journal of Organic Chemistry　2023/11/06

    Publisher: Wiley

    DOI： 10.1002/ajoc.202300525 　

    ISSN： 2193-5807

    eISSN： 2193-5815

    More details Close

    We recently reported dibenzoarsacrowns as a novel class of host molecules, and in this work, prepared four dibenzoarsacrowns:12‐dibenzoarsacrown‐4, 15‐dibenzoarsacrown‐5, 18‐dibenzoarsacrown‐6, and 21‐dibenzoarsacrown‐7, and investigated their guest recognition behaviors for alkali metal and ammonium cations (Li+, Na+, K+, and NH4+). It was found that the triphenylarsine moiety of the dibenzoarsacrowns could be electrochemically oxidized and that their oxidation potentials shifted in response to perturbation because of the weak interaction between the arsenic atom and guest cations. Thus, dibenzoarsacrowns could electrochemically detect cations with sizes that fit the host cavity. Electron spin resonance measurements revealed the generation of cation radical species of arsenic under the application of voltage and supported the idea that the interaction between the arsenic atom and guest cations played a crucial role in the detection of cations. In addition, ion chromatography studies showed that size‐selective cation recognition by dibenzoarsacrowns was achievable even in aqueous solutions.

  9. Porous Organic Salts Composed of Terphenyl Sulfonic Acid and Their Bottleneck Designability Peer-reviewed

    Ryota Akai, Kouki Oka, Naoki Okada, Takahiro Ami, Norimitsu Tohnai

    European Journal of Organic Chemistry　2023/06

    Publisher: Wiley

    DOI： 10.1002/ejoc.202300417 　

    ISSN： 1434-193X

    eISSN： 1099-0690

  10. 3,11‐Diaminodibenzo[ a,j ]phenazine: Synthesis, Properties, and Applications to Tröger's Base‐Forming Ladder Polymerization Peer-reviewed

    Saika Izumi, Keiki Inoue, Yuya Nitta, Tomoya Enjou, Takahiro Ami, Kouki Oka, Norimitsu Tohnai, Satoshi Minakata, Takanori Fukushima, Fumitaka Ishiwari, Youhei Takeda

    Chemistry – A European Journal　29　(14)　2023/02/08

    Publisher: Wiley

    DOI： 10.1002/chem.202202702 　

    ISSN： 0947-6539

    eISSN： 1521-3765

  11. The introduction of a base component to porous organic salts and their CO2 storage capability Peer-reviewed

    Takahiro Ami, Kouki Oka, Keiho Tsuchiya, Wataru Kosaka, Hitoshi Miyasaka, Norimitsu Tohnai

    CrystEngComm　25　(15)　2321-2325　2023

    Publisher: Royal Society of Chemistry (RSC)

    DOI： 10.1039/d3ce00086a 　

    eISSN： 1466-8033

    More details Close

    The introduction of a base component to porous organic salts allows them to have CO2 storage capability.

  12. Innentitelbild: Porous Organic Salts: Diversifying Void Structures and Environments (Angew. Chem. 31/2022)

    Takahiro Ami, Kouki Oka, Keiho Tsuchiya, Norimitsu Tohnai

    Angewandte Chemie　134　(31)　2022/06/15

    Publisher: Wiley

    DOI： 10.1002/ange.202207942 　

    ISSN： 0044-8249

    eISSN： 1521-3757

  13. Porous Organic Salts: Diversifying Void Structures and Environments Peer-reviewed

    Takahiro Ami, Kouki Oka, Keiho Tsuchiya, Norimitsu Tohnai

    Angewandte Chemie International Edition　61　(31)　2022/05/19

    Publisher: Wiley

    DOI： 10.1002/anie.202202597 　

    ISSN： 1433-7851

    eISSN： 1521-3773

  14. Porous Organic Salts: Diversifying Void Structures and Environments Peer-reviewed

    Takahiro Ami, Kouki Oka, Keiho Tsuchiya, Norimitsu Tohnai

    Angewandte Chemie　2022/05/03

    Publisher: Wiley

    DOI： 10.1002/ange.202202597 　

    ISSN： 0044-8249

    eISSN： 1521-3757

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Presentations 10

  1. 修飾トリフェニルメチルアミンと四面体型スルホン酸から成る多孔質有機塩の自在な空孔設計とその物性

    網 貴裕, 岡, 弘樹, 藤内 謙光

    日本化学会 第103春季年会 (2023)　2023/03/23

  2. Designing Void structures and Environments of Porous Organic Salts composed of Triphenylmethylamine derivatives and Tetrahedral tetrasulfonic acids

    網 貴裕, 岡, 弘樹, 藤内 謙光

    10th Japan-Taiwan Bilateral Workshop on Nano-Science JTBW2022　2022/11/30

  3. 温室効果ガスの選択的分離を指向したオール有機の多孔質材料

    網 貴裕, 岡, 弘樹, 藤内 謙光

    超異分野学会 大阪大会2022　2022/08/27

  4. カーボンニュートラルを指向した多孔質有機塩による選択的二酸化炭素回収

    網 貴裕, 岡, 弘樹, 藤内 謙光

    第11回JACI/GSCシンポジウム　2022/06/16

  5. 高フッ素化アミンと四面体型テトラスルホン酸から成る多孔質有機塩のパーフルオロ空間とその物性

    網 貴裕, 藤内 謙光

    日本化学会 第102春季年会 (2022)　2022/03/25

  6. Joint Symposium of JTBW2021

    2021/11/23

  7. 高フッ素化トリフェニルメチルアミンと四面体型テトラスルホン酸による多孔質構造の構築その物性

    網貴裕, 藤内謙光

    第29回有機結晶シンポジウム　2021/09/27

  8. 高フッ素化アミンと四面体型テトラスルホン酸によるパーフルオロ空間を有した多孔質有機塩の構築とその物性

    網 貴裕, 藤内, 謙光

    第70回高分子討論会　2021/09/07

  9. 高フッ素化アミンとスルホン酸によるパーフルオロ空間を持つ多孔質有機塩の構築とその物性

    網貴裕, 施宏居, 藤内謙光

    第67回高分子研究発表会(神戸)　2021/07/09

  10. 高フッ素化アミンと四面体型テトラスルホン酸による超分子多孔質構造のパーフルオロ空間とその物性

    網貴裕, 藤内謙光

    第18回ホスト-ゲスト・超分子化学シンポジウム　2021/06/27

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Industrial Property Rights 1

  1. 有機半導体薄膜およびその製造方法

    岡 弘樹, 赤井, 亮太, 網, 貴裕, 藤内 謙光

    Property Type: Patent

Research Projects 1

  1. 高フッ素化ナノ空間における水の特異な物性の解明を通じたプロトン伝導材料の創製

    網 貴裕

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 特別研究員奨励費

    Institution: 東北大学

    2024/04/23 - 2026/03/31

Social Activities 1

  1. サイエンスキャッスル九州大会 ポスター審査員

    2022/03/19 - 2022/03/19