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Syntheses of Delta-pi Conjugated Metal Complexes toward Development of Porous Two-Dimensional Electron System

Research Project

Project/Area Number 21K18971
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 34:Inorganic/coordination chemistry, analytical chemistry, and related fields
Research InstitutionNagoya University

Principal Investigator

Iguchi Hiroaki  名古屋大学, 工学研究科, 准教授 (30709100)

Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Keywordsδ-π共役 / 金属錯体 / 多孔性 / 分子性導体 / 二次元電子系 / 有機ラジカル / δ-π共役
Outline of Research at the Start

固体中の電子の広がりが面内に制限される二次元電子系は、興味深い電子状態や物性の宝庫である。本研究では、二核金属錯体に大きなπ共役平面を有する配位子を導入することで、δ-π共役系が分子全体に広がった非平面型金属錯体を合成する。この金属錯体の配位子中に不対電子を生じさせ、結合性π-π相互作用によって二次元的に集積することで、分子吸脱着が可能なナノ細孔と高い結晶性を併せ持つ「二次元電子系多孔性分子導体(2D-PMC)」を開発する。得られた2D-PMCのナノ細孔への分子吸脱着を利用して、電子状態や物性の精密制御を行う。

Outline of Final Research Achievements

Pyrenecarboxylic acid was introduced as a large π-conjugated ligand into a puddlewheel-type dinuclear copper and ruthenium complexes. Crystallization of the complexes from various solvents gives crystals with different intermolecular interactions, ranging from complexes with a π-stacking structure to those with no π-stacking structure due to the preferential CH-π interaction. Electrical conductivity measurements revealed that the conductivity of the complexes with π-stacking interactions is one order of magnitude higher than that of the complexes with CH-π interactions. It may be derived from the hole in the δ orbital made by the partial oxidation of the complexes, which can be delocalized through the δ-π conjugation.

Academic Significance and Societal Importance of the Research Achievements

二次元電子系物質は多様かつ特異な電子状態を有することから様々な物質開発が行われてきた。本研究は、δ-π共役で十字型の分子全体に分子軌道が広がることに着目し、実際に二核錯体を合成することで、δ-π共役が広がる条件をある程度見出すことができた。今後、この分子をブロックのように並べることで二次元電子系を構築すると同時に、ナノサイズの細孔が構築されることが期待され、分子吸脱着による電子状態制御が期待される。また、この物質ではナノ細孔の内側にπ共役平面が向くため、既存の物質系には無い新しい物性や吸着分子との相互作用が期待され、新しい有機エレクトロニクス素子への展開も期待できる。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (20 results)

All 2023 2022 2021

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (13 results) (of which Int'l Joint Research: 3 results,  Invited: 6 results) Book (1 results)

  • [Journal Article] Observation of slow magnetic relaxation phenomena in spatially isolated π-radical ions2023

    • Author(s)
      Koyama Shohei、Sato Kazunobu、Yamashita Masahiro、Sakamoto Ryota、Iguchi Hiroaki
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 25 Issue: 7 Pages: 5459-5467

    • DOI

      10.1039/d2cp06026d

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Data Mining from XANES Spectra of Nickel Complexes for Structure Estimation2023

    • Author(s)
      Fuku Kentaro、Yoshida Takefumi、Sato Tetsu、Iguchi Hiroaki、Takaishi Shinya、Sakamoto Ryota、Abe Hitoshi
    • Journal Title

      Chemistry Letters

      Volume: 52 Issue: 4 Pages: 289-291

    • DOI

      10.1246/cl.230028

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Deprotonation‐Induced Color Modulation in N,N′‐Dihydroxynaphthalenediimide‐Based Organic Crystals2023

    • Author(s)
      Tanabe Tappei、Sato Tetsu、Fuku Kentaro、Takaishi Shinya、Iguchi Hiroaki
    • Journal Title

      ChemPlusChem

      Volume: - Issue: 7

    • DOI

      10.1002/cplu.202300140

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Benzenetriimide‐Based Molecular Conductor with Antiferro‐ to Ferromagnetic Switching Induced by Structural Change of π‐stacked Array2022

    • Author(s)
      Koyama Shohei、Horii Yoji、Sato Tetsu、Takaishi Shinya、Hoshino Norihisa、Akutagawa Tomoyuki、Iguchi Hiroaki
    • Journal Title

      ChemPhysChem

      Volume: 23 Issue: 19

    • DOI

      10.1002/cphc.202200322

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Orthogonal Grade-Separated Nanowiring of Molecular Single Chains2022

    • Author(s)
      Nakajima Hirotaka、Iguchi Hiroaki、Takaishi Shinya、Sato Tetsu、Breedlove Brian K.、Ishikawa Ryuta、Kawata Satoshi、Wan Qingyun、Wakizaka Masanori、Yamashita Masahiro
    • Journal Title

      Chemistry of Materials

      Volume: 35 Issue: 1 Pages: 116-122

    • DOI

      10.1021/acs.chemmater.2c02720

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] An electrically conductive metallocycle: densely packed molecular hexagons with π-stacked radicals2022

    • Author(s)
      Cui Mengxing、Murase Ryuichi、Shen Yongbing、Sato Tetsu、Koyama Shohei、Uchida Kaiji、Tanabe Tappei、Takaishi Shinya、Yamashita Masahiro、Iguchi Hiroaki
    • Journal Title

      Chemical Science

      Volume: 13 Issue: 17 Pages: 4902-4908

    • DOI

      10.1039/d2sc00447j

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 配位結合を用いた多孔性分子導体の開発2023

    • Author(s)
      井口弘章
    • Organizer
      分子系の複合電子機能 第181委員会 最終研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 多孔性分子導体の開発2023

    • Author(s)
      井口弘章
    • Organizer
      錯体物性科学研究会 分子・ナノ・量子が拓く未来材料
    • Related Report
      2022 Annual Research Report
  • [Presentation] 堅牢な多孔性分子導体の開発とゲスト分子による電子物性制御2023

    • Author(s)
      井口弘章
    • Organizer
      2022年度量子ビームサイエンスフェスタ
    • Related Report
      2022 Annual Research Report
  • [Presentation] ピレンカルボン酸を配位子としたパドルホイール型ルテニウム二核錯体の合成2023

    • Author(s)
      高木 恋、日下 心平、井口 弘章、松田 亮太郎
    • Organizer
      日本化学会第103春季年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Electrically conductive metallocycle: densely packed molecular hexagons assembled by π-radicals2022

    • Author(s)
      Hiroaki Iguchi
    • Organizer
      8th Asian Conference on Coordination Chemistry (ACCC8)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Crystal Structure and Conductive Properties of Porous Molecular Conductors2022

    • Author(s)
      Hiroaki Iguchi
    • Organizer
      The 17th Conference of the Asian Crystallographic Association (AsCA2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 配位結合で構築する多孔性π積層骨格とその電子物性2022

    • Author(s)
      井口 弘章
    • Organizer
      第3回錯体化学会フロンティアセミナー
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Design of Electrically Conductive Nanowire Metal Complexes and Porous Molecular Conductors2022

    • Author(s)
      Hiroaki Iguchi
    • Organizer
      Nankai Symposium on Advanced Functional Materials
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ナノサイズの孔を持つ分子性導体を創る2022

    • Author(s)
      井口弘章
    • Organizer
      ITbM/GTRコンソーシアムワークショップ GTR Seeds Seminar
    • Related Report
      2022 Annual Research Report
  • [Presentation] Porous Molecular Conductor Constructed from Densely Packed Hexagonal Metallocycle2022

    • Author(s)
      Hiroaki Iguchi, Mengxing Cui, Ryuichi Murase, Shinya Takaishi, MasahiroYamashita
    • Organizer
      錯体化学会第72回討論会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 大環状金属錯体が稠密に積層した多孔性分子導体の合成と物性2022

    • Author(s)
      井口弘章、Mengxing Cui、村瀬龍一、Yongbing Shen、佐藤鉄、小山翔平、内田海路、田邉辰平、高石慎也、山下正廣
    • Organizer
      第30回有機結晶シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] Syntheses and Physical Properties of Robust Porous Molecular Conductors with 1,2,4-Triazole Group2022

    • Author(s)
      Hiroaki Iguchi, Mengxing Cui, Yongbing Shen, Shohei Koyama, Shinya Takaishi
    • Organizer
      日本化学会第102春季年会
    • Related Report
      2021 Research-status Report
  • [Presentation] 多孔性分子導体の開発:現況と問題点2021

    • Author(s)
      井口弘章
    • Organizer
      2021年度物性研究所短期研究会・分子性固体研究の拡がり:新物質と新現象
    • Related Report
      2021 Research-status Report
    • Invited
  • [Book] 錯体化学会フロンティア選書 フロンティア ナノ金属錯体化学2022

    • Author(s)
      山下正廣, 小西克明 編著
    • Total Pages
      435
    • Publisher
      三共出版
    • ISBN
      9784782708019
    • Related Report
      2022 Annual Research Report

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Published: 2021-07-13   Modified: 2024-01-30  

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