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フラビン誘導体の長寿命電荷分離状態の生成とデバイスへの応用

Research Project

Project/Area Number 21750146
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Functional materials chemistry
Research InstitutionOsaka University

Principal Investigator

大久保 敬  Osaka University, 工学研究科, 特別科学研究員 (00379140)

Project Period (FY) 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2009: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsフラビン / 色素増感型太陽電池 / 光合成 / ドナー・アクセプター連結系 / 電子移動 / 電荷分離 / フラーレン / 光電流
Research Abstract

N,N-ジメチルアニリン-フラビン(DMA-F1)と水素結合サイトを有するフラーレン誘導体(SRC^<60>and DRC^<60>)によって形成される超分子クラスターの光電変換特性について報告する。超分子の形成についてはTHF中で紫外可視吸収スペクトルによって確認した。それぞれの超分子クラスター((DMA-F1/SRC^<60>)n,(2DMA-F1/DRC^<60>)n)は超分子を形成したTHF溶液中にヘキサンを加えて作製した。作製したクラスターを透過型電子顕微鏡で観測した結果、(DMA-FUSRC^<60>)nのクラスターはネットワークを形成し、サブミクロンオーダーの構造を形成していた(φ=200-500nm)。一方(2DMA-F1/DRC^<60>)nのクラスターは直径約40nmの均一なナノ粒子を形成していた。次にそれぞれのクラスターを酸化スズ透明電極基板(OTE/SnO_2)の上に電気泳動法を用いて吸着させて電極を作製した(OTE/SnO_2/(DMA-F1/SRC^<60>)n,OTE/SnO_2/(2DMA-F1/DRC^<60>)n)。作用極にクラスターを吸着させた薄膜電極、対局に白金電極、LiIおよびI2を含むアセトニトリル溶液を電解液として、湿式二極系を構成した。電極としてOTE/SnO_2/(DMA-F1/SRC^<60>)nを用いた外部量子効率(IPCE)の値は3.0%であったのに対し、OTE/SnO_2/(2DMA-F1/DRC^<60>)nでは5.1%と約2倍大きな値を示した。この結果から色素はネットワークを形成するよりも、均一なナノ粒子を形成する方がより高効率な光電流の発生を促すことが考えられる。また、これらの超分子クラスターの光ダイナミクスについてもレーザーフラッシュフォトリシスを用いて、詳細に検討した。

Report

(1 results)
  • 2009 Annual Research Report
  • Research Products

    (24 results)

All 2009 Other

All Journal Article (17 results) (of which Peer Reviewed: 17 results) Presentation (4 results) Remarks (1 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Reorganization Energies of Diprotonated and Saddle-Distorted Porphyrin s In Photoinduced Electron-Transfer Reduction Controlled by Conformational Distortion2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Journal of the American Chemical Society 131

      Pages: 577-584

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Aliphatic C-H Bond Activation Initiated by a (mu-eta(2) : eta(2)-Peroxo)dicopper(II) Complex in Comparison with Cumylperoxyl Radical2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Journal of the American Chemical Society 131

      Pages: 9258-9267

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photosynthetic Reaction Center Mimicry : Low Reorganization Energy Driven Charge Stabilization in Self-Assembled Cofacial Zinc Phthalocyanine Dimer-Fullerene Conjugate2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Journal of the American Chemical Society 131

      Pages: 8787-8797

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tuning Charge Transfer Energetics in Reaction Center Mimics via T-h-Functionalization of Fullerenes2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Journal of the American Chemical Society 131

      Pages: 8180-8195

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structure and Spectroscopy of Oxyluciferin, the Light Emitter of the Firefly Bioluminescence2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Journal of the American Chemical Society 131

      Pages: 11590-11605

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Metalloporphycenes : Synthesis and Characterization of (Pentamethylcycl opentadienyl)ruthenium Sitting-Atop and π-Complexes2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Journal of the American Chemical Society 131

      Pages: 13538-13547

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anion-Complexation-Induced Stabilization of Charge Separation2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Journal of the American Chemical Society 131

      Pages: 16138-16146

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mechanistic Insights into Hydride-Transfer and Electron-Transfer Reactions by a Manganese(IV)-Oxo Porphyrin Complex2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Journal of the American Chemical Society 131

      Pages: 17127-17134

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mechanistic Insights into Hydride-Transfer and Electron-Transfer Reactions by a Manganese(IV)-Oxo Porphyrin Complex2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Inorganic Chemistry 48

      Pages: 2571-2582

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Rational Design and Functions of Electron Donor-Acceptor Dyads with Much Longer Charge-Separated Lifetimes than Natural Photosynthetic Reaction Centers2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Bulletin of the Chemical Society of Japan 48

      Pages: 2571-2582

    • NAID

      10025116359

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Charge Separation in Metallomacrocycle Complexes Linked with Electron Acceptors by Axial Coordination2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Dalton Transactions

      Pages: 3880-3889

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] In Vitro Heavy-Atom Effect of Palladium(II) and Platinum(II) Complexes of Pyrrolidine-Fused Chlorin in Photodynamic Therapy2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Journal of Medicinal Chemistry 52

      Pages: 2747-2753

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis and Photoinduced Electron Transfer of Phthalocyanine-Perylen ebisimide Pentameric Arrays2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Journal of Organic Chemistry 74

      Pages: 5871-5880

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Intramolecular Base-Accelerated Radical-Scavenging Reaction of a Planar Catechin Derivative Bearing a Lysine Moiety2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Chemical Communications

      Pages: 6180-6182

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Change in the Site of Electron-Transfer Reduction of a Zinc-Quinoxalino porphyrin/Gold-Quinoxalinoporphyrin Dyad by Binding of Scandium Ions and the Resulting Remarkable Elongation of the Charge-Shifted-State Lifetime2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Chemistry -A European Journal 15

      Pages: 10493-10503

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Anisotropic High Electron Mobility and Photodynamics of a Self-Assembled Porphyrin Nanotube Including C_60 Molecules2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      The Journal of Physical Chemistry C 113

      Pages: 19694-19699

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Radical-Scavenging Activity of Biosynthetic Precursors of Vitemin E and Their Derivatives2009

    • Author(s)
      Kei Ohkubo, et al.
    • Journal Title

      Free Radical Biology and Medicine 47

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] Photoinduced Charge Separation of Zinc Porphyrin- and Phthalocyanine-Fullerene Linked Dyads2009

    • Author(s)
      大久保敬
    • Organizer
      216th ECS Meeting
    • Place of Presentation
      オーストリア・ウィーン市
    • Year and Date
      2009-10-07
    • Related Report
      2009 Annual Research Report
  • [Presentation] シリコンフタロシアニン-フラーレン-トリニトロフルオレノン連結系における長寿命光電荷分離状態の生成2009

    • Author(s)
      大久保敬
    • Organizer
      2009年光化学討論会
    • Place of Presentation
      群馬県・桐生市
    • Year and Date
      2009-09-17
    • Related Report
      2009 Annual Research Report
  • [Presentation] Elongation of Charge-Separation Lifetime of Zinc Quinoxalinoporphyrin-Gold Quinoxalinoporphyrin by Binding of Scandium Ion2009

    • Author(s)
      大久保敬
    • Organizer
      18th lnternational Syxnposium on the Photochemistry and Photophysics of Coordination
    • Place of Presentation
      北海道札幌市
    • Year and Date
      2009-07-06
    • Related Report
      2009 Annual Research Report
  • [Presentation] Elongation of Charge-Separation Lifetime of Zinc Quinoxalinoporphyrin-Gold Quinoxalinoporphyrin by Binding of Scandium Ion2009

    • Author(s)
      大久保敬
    • Organizer
      215th ECS Meeting
    • Place of Presentation
      アメリカ合衆国・サンフランシスコ市
    • Year and Date
      2009-05-26
    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://www-etchem.mls.eng.osaka-u.ac.jp/

    • Related Report
      2009 Annual Research Report
  • [Patent(Industrial Property Rights)] 光照射によって誘電率が変化する膜およびそれを用いた電子デバイス2009

    • Inventor(s)
      大久保敬
    • Industrial Property Rights Holder
      大阪大学
    • Industrial Property Number
      2009-205923
    • Filing Date
      2009-09-07
    • Related Report
      2009 Annual Research Report
  • [Patent(Industrial Property Rights)] 芳香族化合物の酸化反応生成物の製造方法2009

    • Inventor(s)
      大久保敬
    • Industrial Property Rights Holder
      大阪大学
    • Industrial Property Number
      2009-213811
    • Filing Date
      2009-09-15
    • Related Report
      2009 Annual Research Report

URL: 

Published: 2009-04-01   Modified: 2016-04-21  

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