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マイクロ波による共役ポリマー分子鎖の1次元伝導特性の電極レス評価

Research Project

Project/Area Number 19022021
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionOsaka University

Principal Investigator

関 修平  Osaka University, 大学院・工学研究科, 准教授 (30273709)

Co-Investigator(Kenkyū-buntansha) 佐伯 昭紀  大阪大学, 産業科学研究所, 助教 (10362625)
Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2008: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2007: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordsマイクロ波 / 孤立分子鎖 / 単一分子鎖 / 伝導度 / 移動度 / 分子内 / 過渡吸収 / 共役高分子
Research Abstract

主鎖共役高分子の骨格構造は、高分子材料が示すべき光・電子物性に顕著な影響を与えるため、両者の定量的な相関関係の解明は、実際の共役高分子を有機エレクトロニクス材料として用いる上で極めて重要である。主鎖π共役高分子や主鎖σ共役型の高分子であるポリシランなどは、その共役系電子構造と近紫外分光特性に密接な相関を示し、化学構造に伴う骨格構造(コンフォメーション)の変化を分光分析により比較的容易に推測する事が可能である。
そこで本研究では、さまざまな化学構造・置換基パターンを有する主鎖共役高分子・共役固体結晶・超分子構造を合成し、電荷輸送状態にある分子(ラジカルカチオン・アニオン)の直接観察(Transient Absorption Spectroscopy : TAS法)によって電荷付与に伴う共役構造の変化の予測を行った。同時に、電極上にこれら共役有機材料を塗布し、光過渡電流の測定(Charge Integration法 : CI法)も合わせて行った。これら過渡種の定量的分析は、系中に存在する電荷担体の正確な"数"を与える。従って生成した電荷担体による系全体の伝導度の変化から、分子鎖に沿った電荷担体の移動度が得ることができる。伝導度の測定には、一般的なDC法に対して、AC法として知られるTime-Resolved Microwave Conductivity法(TRMC法)を用いた。分子鎖コンホメーションに関する定量的な知見の下、高分子鎖の"かたち"や化学構造による分子鎖内移動度の変化から、さまざまな共役高分子の主鎖・集合体共役系が本質的に示すべき電荷移動度を明らかにすると同時に、材料が本来有するポテンシャルを迅速に明らかにするシステムの構築を行なった。

Report

(2 results)
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (17 results)

All 2009 2008 2007 Other

All Journal Article (14 results) (of which Peer Reviewed: 14 results) Presentation (1 results) Book (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Anisotropic Electron Transport Properties in Sumanene Crystal2009

    • Author(s)
      T. Amaya, S. Seki, H. Sakane, T. Hirao
    • Journal Title

      J. Am. Chem. Soc. 131

      Pages: 408-409

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Long-Lived Hole Stabilized at a Triphenylamine Core and Shielded by Rigid Phenylazomethine Dendrons : A Pulse Radiolysis Study2008

    • Author(s)
      A. Saeki, S Seki, N. Satoh, K. Yamamoto, and S. Tagawa
    • Journal Title

      J. Phys. Chem. B 112

      Pages: 15540-15545

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Intra-molecular Mobility of Charge Carriers along Oligogermane Backbones Studied by Flash Photolysis Time-Resolved Microwave Conductivity and Transient Optical Spectroscopy Techniques2008

    • Author(s)
      S. Seki, A. Saeki, Y. Koizumi, A. Acharya, and K. Mochida
    • Journal Title

      Radiat. Phys. Chem. 77

      Pages: 1323-1327

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electrodeless Determination of Charge Carrier Mobility in Poly(3-hexylthiophene)Films Incorporating Perylenediimide as Photoconductivity Sensitizer and Spectroscopic Probe2008

    • Author(s)
      A. Saeki, S.-I. Ohsaki, S. Seki, and S. Tagawa
    • Journal Title

      J. Phys. Chem. C 112

      Pages: 16643-16650

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mobility and Dynamics of Charge Carrier in Rubrene Single Crystal Studied by Flash-Photolysis Microwave Conductivity and Optical Spectroscopy2008

    • Author(s)
      A., Saeki・S., Seki・T.,Takenobu・Y.,Iwasa・S., Tagawa.
    • Journal Title

      Adv. Mater. 20

      Pages: 920-923

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Intra-molecular Mobility of Charge Carriers along Oligogermane Backbones Studied by Flash Photolysis Time-Resolved Microwave Conductivity and Transient Optical Spectroscopy Techniques2008

    • Author(s)
      S., Seki・A., Saeki・A., Acharya・S., Tagawa・K., Mochida
    • Journal Title

      Radiat. Phys. Chem. (in press)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electronegative Oligothiophenes Fully Anneleated with Hexafluorocyclopentene: Synthesis, Properties, and Intrinsic Electron Mobility2008

    • Author(s)
      Y., Umemoto・Y., Ie・A., Saeki・S., Seki・S., Tagawa・Yoshio, Aso
    • Journal Title

      Org. Lett (in press)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Superstructure-Dependent Optical and Electrical Properties of Unusual Face-to-Face π-Stacked One-Dimensional Assembly of Dehydrobenao[12]annulene in Crystalline State2008

    • Author(s)
      I., Hisaki・Y., Sakamoto・H., Shigemitsu・N., Tohnai・M., Miyata・S., Seki・A., Saeki・S., Tagawa
    • Journal Title

      Chem Eur. J. (in press)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optoelectronic Properties and Nanostructure Formation of □-Conjugated Polymers2007

    • Author(s)
      S., Seki・S., Tagawa
    • Journal Title

      Polymer J 39

      Pages: 277-293

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular Engineering of Coaxial Donor-Acceptor Heterojunction by Coassembly of Two Different Hexabenzocoronenes: Graphitic Nanotubes with Enhanced Phot oconducting Properties2007

    • Author(s)
      Y., Yamamoto・A., Saeki・S., Seki, et. al.
    • Journal Title

      J. Am. Chem Soc. 129

      Pages: 9276-9277

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of Porphyrin Substituents on Film Structure and Photoelectrochemical Properties of Purphyrin-Fullerene Composite Clusters Electrophoretically Deposited on Nanostructured SnO2 Electrodes2007

    • Author(s)
      H., Imahori・S., Seki・A., Saeki, et. al.
    • Journal Title

      Chem Eur. J. 13

      Pages: 10182-10193

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dynamics of Photogenerated Charge Carrier and Morphology Dependence in Polythiophene Films Studied by In-Situ Time-Resolved Microwave Conductivity and Transient Absorption Spectroscopy2007

    • Author(s)
      A., Saeki・S., Seki・Y., Koizumi・S., Tagawa.
    • Journal Title

      J. Photochem. Photobiol. A 186

      Pages: 158-165

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Intramolecular Mobility of Holes along Rod-like Herical Si-backbones in Optically Active Polysilanes

    • Author(s)
      Y. Honsho, A. Asano, S. Seki, T. Sunagawa, and A. Saeki
    • Journal Title

      Synthetic Metal (In press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Unusual Side Chain Effects on Charge-Carrier Lifetime in Discotic Liquid Crystals

    • Author(s)
      J. Motoyanagi, Y. Yamamoto, A. Saeki, S. Seki, and Takuzo Aida
    • Journal Title

      Chem. Asian J. (In press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] 電極レス測定法によるスマネン微結晶中の異方電子輸送特性2008

    • Author(s)
      関 修平
    • Organizer
      応用物理学会 第55回学術講演会
    • Place of Presentation
      日本大学
    • Year and Date
      2008-03-29
    • Related Report
      2007 Annual Research Report
  • [Book] 有機薄膜太陽電池の最新技術II2009

    • Author(s)
      関修平
    • Total Pages
      316
    • Publisher
      CMC出版, 東京
    • Related Report
      2008 Annual Research Report
  • [Patent(Industrial Property Rights)] 導電性組成物2008

    • Inventor(s)
      佐伯昭紀, 開修平
    • Industrial Property Rights Holder
      大阪大学
    • Industrial Property Number
      2008-163486
    • Filing Date
      2008-06-08
    • Related Report
      2008 Annual Research Report

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Published: 2007-04-01   Modified: 2018-03-28  

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