研究者詳細

顔写真

ニシヤマ　トモキ
西山　智貴
Tomoki Nishiyama
所属
金属材料研究所　物質創製研究部　錯体物性化学研究部門
職名
助教
学位

  • 博士 (理学) （近畿大学大学院）

e-Rad 研究者番号
51018536

経歴 1

  • 2025年4月 ～ 継続中
    東北大学　金属材料研究所　錯体物性化学研究部門

学歴 3

  • 近畿大学大学院　総合理工学研究科

    2022年4月 ～ 2025年3月

  • 近畿大学大学院　総合理工学研究科

    2020年4月 ～ 2022年3月

  • 近畿大学　理工学部　理学科 化学コース

    2016年4月 ～ 2020年3月

所属学協会 2

  • 錯体化学会

    2019年4月 ～ 継続中

  • 日本化学会

    2019年4月 ～ 継続中

研究キーワード 8

  • リチウムイオン二次電池

  • 有機電界効果トランジスタ

  • 有機EL

  • 有機薄膜太陽電池

  • 発光特性

  • 電気伝導性

  • 多孔性金属錯体

  • 配位高分子

研究分野 2

  • ナノテク・材料 / 機能物性化学 /

  • ナノテク・材料 / 無機・錯体化学 /

論文 8

  1. Carrier Mobility and Luminescence Properties of a One-Step Synthesized π-Extended Diketopyrrolopyrrole Derivative

    Tomoki Nishiyama, Taiki Yamaoka, Kento Nakajima, Shogo Nakajima, Zi Lang Goo, Ryohei Akiyoshi, Hirotaka Kitoh-Nishioka, Senku Tanaka, Kunihisa Sugimoto, Daisuke Tanaka, Takashi Okubo

    ACS Omega　2025年3月11日

    DOI： 10.1021/acsomega.4c11150 　

    ISSN：2470-1343

  2. Platinum–Acetylide Complexes as Nonfullerene Acceptors in Organic Photovoltaic Systems

    Tomoki Nishiyama, Taiki Yamaoka, Zi Lang Goo, Hirotaka Kitoh-Nishioka, Senku Tanaka, Kunihisa Sugimoto, Takashi Okubo

    Inorganic Chemistry　2024年12月20日

    DOI： 10.1021/acs.inorgchem.4c04160 　

    ISSN：0020-1669 1520-510X

  3. Dye‐Containing Polymers with π‐Extened Diketopyrropyrrole Derivatives for Semi‐Transparent Organic Photovoltaics

    Tomoki Nishiyama, Taiki Yamaoka, Kento Nakajima, Weichun Weng, Sota Nakano, Taro Yamamoto, Senku Tanaka, Tomonari Wakabayashi, Hal Suzuki, Hirotaka Kitoh‐Nishioka, Takashi Okubo

    ChemPlusChem　2024年12月

    DOI： 10.1002/cplu.202400350 　

    ISSN：2192-6506

    詳細を見る 詳細を閉じる

    <jats:title>Abstract</jats:title><jats:p>Dye‐containing polymers <jats:bold>P1</jats:bold> (<jats:bold>PEDPP‐OT‐BDT</jats:bold>) and <jats:bold>P2</jats:bold> (<jats:bold>PEDPP‐OT‐BDTT</jats:bold>) including a π‐extended diketopyropyrrole (DPP) derivative and electron‐rich thiophene fused ring units (4,8‐bis((2‐ethylhexyl)oxy)benzo[1,2‐<jats:italic>b</jats:italic>:4,5‐<jats:italic>b</jats:italic>′]dithiophene for <jats:bold>P1</jats:bold> and 4,8‐bis(5‐(2‐ethylhexyl)thiophen‐2‐yl)benzo[1,2‐<jats:italic>b</jats:italic>:4,5‐<jats:italic>b</jats:italic>′]dithiophene for <jats:bold>P2</jats:bold>) were synthesized as narrow band gap dyes. A π‐extended DPP (EDPP‐OT‐BrPh), fragment of the polymers <jats:bold>P1</jats:bold> and <jats:bold>P2</jats:bold>, was obtained by extending the π‐conjugation of DPP using Ru(III)‐catalyzed C−H and N−H activation reported by Gońka <jats:italic>et al</jats:italic>. in 2019, exhibiting a high quantum yield (ϕ<jats:sub>em</jats:sub>=0.84) and small HOMO‐LUMO gap (<jats:italic>E</jats:italic><jats:sub>g</jats:sub>=1.69 eV) due to the spatial overlap of the HOMO and LUMO orbitals. The solubility of the π‐extended DPP was improved by introducing four 2‐octylthophene side chains around the periphery of the planer dye moiety, while maintaining the high planarity of the dye molecule, which is essential to the function of optoelectronic devices. As a result, <jats:bold>P1</jats:bold> and <jats:bold>P2</jats:bold>, polymerized with the π‐extended DPP and BDT derivatives, exhibit carrier mobility of approximately 10<jats:sup>−5</jats:sup> cm<jats:sup>2</jats:sup>/Vs in organic field‐effect transistors (OFETs). In bulk heterojunction (BHJ) solar cells with [6,6]‐phenyl‐C<jats:sub>61</jats:sub>‐butyric acid methyl ester (PCBM), they demonstrate a power conversion efficiency (PCE) of 1.0 % with an average transmittance (AVTs) of around 60 %.</jats:p>

  4. Synthesis, characterization, and OFET characteristics of p-type organic semiconductors incorporating diketopyrrolopyrrole and thiadiazole-quinoxaline acceptors

    Naohiro Takahashi, Tomoki Nishiyama, Weichun Weng, Yuki Miwa, Shinsuke Marumoto, Hirotaka Kitoh-Nishioka, Senku Tanaka, Takashi Okubo

    Chemistry Letters　2024年6月1日

    DOI： 10.1093/chemle/upae115 　

    ISSN：0366-7022 1348-0715

    詳細を見る 詳細を閉じる

    <jats:title>Abstract</jats:title> <jats:p>P-type Organic Semiconductors, TQx5-BT-DPP8 (1a) and TQx5-BT-DPP20 (1b), consisting of a donor unit of bithiophene (BT) and two acceptor units of thiadiazole quinoxaline (TQx) and diketopyrrolopyrrole (DPP), were synthesized, and their electronic states and physical properties were elucidated. These semiconductors demonstrate strong absorption extending from the visible to the near-infrared region, functioning effectively as strong donor dyes. The organic field-effect transistors (OFETs) exhibited normally on transistor characteristics, with carrier mobilities of 1.1 × 10−3 cm2/Vs for 1a and 3.3 × 10−4 cm2/Vs for 1b.</jats:p>

  5. A copper(i) thiocyanate-based photoresponsive semiconducting 2D coordination polymer

    Tomoki Nishiyama, Hirotaka Kitoh-Nishioka, Senku Tanaka, Masahiko Maekawa, Takayoshi Kuroda-Sowa, Masaki Yoshida, Masako Kato, Takashi Okubo

    Dalton Transactions　2024年

    DOI： 10.1039/D3DT03125J 　

  6. Dinuclear cobalt complexes with an asymmetric biphenyl bridging ligand, [Co2(LFBu)(bpqa)2](PF6)2 (H4LFBu = 5-fluoro-5′-tert-butyl-3,3′,4,4′-tetrahydroxybiphenyl, bpqa = bis(2-pyridylmethyl)(2-quinolylmethyl)amine): Spectroscopic, electrochemical and magnetic characterization

    Naohiro Takahashi, Tomoki Nishiyama, Takuto Mibu, Yusaku Suenaga, Takashi Okubo, Masahiko Maekawa, Takayoshi Kuroda-Sowa

    Inorganica Chimica Acta　2022年10月

    DOI： 10.1016/j.ica.2022.121095 　

    ISSN：0020-1693

  7. Synthesis, crystal structures and characterization of Nickel(II) complexes with dithiobenzoate derivatives

    Tomoki Nishiyama, Naohiro Takahashi, Takuto Mibu, Masahiko Maekawa, Takayoshi Kuroda-Sowa, Yusaku Suenaga, Takashi Okubo

    Results in Chemistry　2022年1月

    DOI： 10.1016/j.rechem.2022.100470 　

    ISSN：2211-7156

  8. Crystal Structure of an Iodido-bridged Dinuclear Copper(I) Complex with 3,6-Bis(dimethylamino)acridine

    Misaki OHKITA, Aya FUJIWARA, Tomoki NISHIYAMA, Masahiko MAEKAWA, Takayoshi KURODA-SOWA, Takashi OKUBO

    X-ray Structure Analysis Online　2021年6月10日

    DOI： 10.2116/xraystruct.37.29 　

    ISSN：1883-3578

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