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2010 Fiscal Year Annual Research Report

高励起状態化学の分子素子や環境問題、ナノおよびバイオテクノロジーへの応用

Research Project

Project/Area Number 22245022
Research InstitutionOsaka University

Principal Investigator

真嶋 哲朗  大阪大学, 産業科学研究所, 教授 (00165698)

Co-Investigator(Kenkyū-buntansha) 藤塚 守  大阪大学, 産業科学研究所, 准教授 (40282040)
川井 清彦  大阪大学, 産業科学研究所, 准教授 (50314422)
立川 貴士  大阪大学, 産業科学研究所, 助教 (20432437)
Keywords高励起状態 / 分子素子 / 電子移動 / Marcus理論 / オリゴチオフェン / 光触媒 / MOF / 単一分子分光
Research Abstract

本研究ではレーザー光の多段階照射や短波長光照射、さらには多光子吸収により生じる高励起状態から進行する化学反応を検討することにより、分子素子の創製、環境汚染物資の分解、光線力学療法への展開を目的としており、研究初年度においては、超高速分光法を用いた高励起状態の直接観察の確立および分子素子への展開さらには光触媒メカニズムの解明を目指し、以下の研究を行った。
(1) 高励起三重項状態から進行する電子移動過程の解明。オリゴチオフェンにレーザー光を多段階照射することにより高励起三重項状態を生成した。溶媒中に電子アクセプターが存在する場合には電子移動が起こり、その速度はMarcus理論に従うことを明らかにした。さらにオリゴチオフェンとアクセプターを結合させたダイアッド分子にフェムト秒レーザーを二色二レーザー照射した場合には、高励起三重項状態を経た分子内電荷分離を示す寿命変化が起こることを確認した。
(2) 多孔性メタルオーガニックフレームワーク(MOF)による光触媒過程の解明。発光性のEu^<3+>と1,3,5-benzenetribenzoateリガンドを用いたMOFを作成し、Eu^<3+>発光強度および寿命を測定することで溶媒中の有機化合物の酸化過程を検討した。Eu^<3+>の消光は電子移動の自由エネルギー変化を反映することを明らかにした。さらに、共焦点顕微鏡による蛍光解析より、酸化活性のMOF位置依存性を明らかにすることで、MOF光触媒のサイズ選択的活性の可能性を示した。また、その他のMOFに蛍光プローブを挿入することによりMOF内における極性環境変化を明らかにすることで、MOFの光触媒としての有用性を検討した。

  • Research Products

    (64 results)

All 2011 2010 Other

All Journal Article (24 results) (of which Peer Reviewed: 24 results) Presentation (38 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Delocalization of Positive Charge in pi-Stacked Multi-Benzene Rings in Multi-Layered Cyclophanes2011

    • Author(s)
      M.Fujitsuka, T.Majima
    • Journal Title

      J.Phys.Chem.A

      Volume: 115 Pages: 741-746

    • Peer Reviewed
  • [Journal Article] Photoinduced Electron Transfer in a Quantum Dot-Cucurbituril Supramolecular Complex2011

    • Author(s)
      S.-C.Cui, T.Majima
    • Journal Title

      J.Phys.Chem.C

      Volume: 115 Pages: 1824-1830

    • Peer Reviewed
  • [Journal Article] Reorganization Energy of Supramolecular Donor-Acceptor Dyad of Octaethylpocphyrin Isomers : Experimental and Computational Study2011

    • Author(s)
      M.Fujitsuka, T.Majima
    • Journal Title

      J.Photochem.Photobiol.A.

      Volume: 217 Pages: 242-248

    • Peer Reviewed
  • [Journal Article] ^<13>C-selective infrared multiple photon dissociation of β-propiolactone by a free electron laser2011

    • Author(s)
      Y.Miyamoto, T.Majima
    • Journal Title

      Nucl.Instrum.Meth.Phys.Res.B : Beam Interact.Mater.Atoms

      Volume: 269 Pages: 180-184

    • Peer Reviewed
  • [Journal Article] 単一分子蛍光分光法によるDNAおよびタンパク質の構造変化のダイナミクス2011

    • Author(s)
      崔正勸、真嶋哲朗
    • Journal Title

      高分子

      Volume: 60 Pages: 70-73

    • Peer Reviewed
  • [Journal Article] Response to Comment on "Photocatalytic Oxidation Mechanism of As(III)on TiO_2 : Unique Role of As(III)as a Charge Recombinant Species"2011

    • Author(s)
      D.Monllor-Satoca, T.Majima
    • Journal Title

      Environ.Sci.Technol.

      Volume: (accepted)

    • Peer Reviewed
  • [Journal Article] Single-Molecule, Single-Particle Observation of Size-Dependent Photocatalytic Activity in Au/TiO_2 Nanocomposites2011

    • Author(s)
      N.Wang, T.Majima
    • Journal Title

      Chem.Sci.

      Volume: (accepted)

    • Peer Reviewed
  • [Journal Article] Unfolding Dynamics of Cytochrome c Revealed by Single-Molecule and Ensemble-Averaged Spectroscopy2011

    • Author(s)
      J.Choi, T.Majima
    • Journal Title

      Phys.Chem.Chem.

      Volume: (accepted)

    • Peer Reviewed
  • [Journal Article] Photocatalytic Formation of I-I Bonds Using DNA Which Enables Detection of Single Nucleotide Polymotphisms2010

    • Author(s)
      K.Kawai, T.Majima
    • Journal Title

      J.Am.Chem.Soc.

      Volume: 132 Pages: 14216-14220

    • Peer Reviewed
  • [Journal Article] Guanidinium-Enhanced Production of Hydrogen on Nafion-Coated Dye/TiO_2 under Visible Light2010

    • Author(s)
      J.Park, T.Majima
    • Journal Title

      J.Phys.Chem.Lett.

      Volume: 1 Pages: 1351-1355

    • Peer Reviewed
  • [Journal Article] Electron Transfer from Oligothiophenes in the Higher Triplet Excited States2010

    • Author(s)
      M.Fujitsuka, T.Majima
    • Journal Title

      J.Phys.Chem.A

      Volume: 114 Pages: 10789-10794

    • Peer Reviewed
  • [Journal Article] Charge Separation and Photosensitized Damage in DNA Mediated by Naphthalimide, Naphthaldiiminide, and Anthraquinone2010

    • Author(s)
      K.Kawai, T.Majima
    • Journal Title

      J.Phys.Chem.B

      Volume: 114 Pages: 10195-10199

    • Peer Reviewed
  • [Journal Article] Sequence Dependence of Excess Electron Transfer in DNA2010

    • Author(s)
      K.Tainaka, T.Majima
    • Journal Title

      J.Phys.Chem.B

      Volume: 114 Pages: 14657-14663

    • Peer Reviewed
  • [Journal Article] Europium-Based Metal-Organic Framework as a Photocatalyst for One-Electron Oxidation of Organic Compounds2010

    • Author(s)
      J.R.Choi, T.Majima
    • Journal Title

      Langmuir(Lett.)

      Volume: 26 Pages: 10437-10443

    • Peer Reviewed
  • [Journal Article] Site-Selective Bimodal Absorption and Emission of Distonic Radical Cation2010

    • Author(s)
      S.Tojo, T.Majima
    • Journal Title

      J.Org.Chem.

      Volume: 75 Pages: 3618-3625

    • Peer Reviewed
  • [Journal Article] Photocatalytic Oxidation Mechanism of As(III)on TiO_2 : Unique Role of As(III)as a Charge Recombinant Species2010

    • Author(s)
      W.Choi, T.Majima
    • Journal Title

      Environ.Sci.Technol.

      Volume: 44 Pages: 9099-9104

    • Peer Reviewed
  • [Journal Article] Design of a Highly Sensitive Fluorescent Probe for Interfacial Electron Transfer on a TiO_2 Surface2010

    • Author(s)
      T.Tachikawa, T.Majima
    • Journal Title

      Angew.Chem.Int.Ed.

      Volume: 49 Pages: 8593-8597

    • Peer Reviewed
  • [Journal Article] 8-Oxo-7,8-dihydro-2'-deoxyguanosine produces a long-lived charge-separated stateduring the photosensitized one-electron oxidation of DNA resuiting in efficient and exclusive degradation2010

    • Author(s)
      K.Kawai, T.Majima
    • Journal Title

      Chem.Common.

      Volume: 46 Pages: 3277-3279

    • Peer Reviewed
  • [Journal Article] Photophysical propedies of Zn-substituted Cytochrome c investigated by single-molecule and ensemble-aveaged spectroscopy2010

    • Author(s)
      J.Choi, T.Majima
    • Journal Title

      Chem.Common.

      Volume: 46 Pages: 9155-9157

    • Peer Reviewed
  • [Journal Article] Tin-porphyrin sensitized TiO_2 for the producdon of H_2 under visible light2010

    • Author(s)
      W.Kim, T.Majima
    • Journal Title

      Energy Environ.Sci.

      Volume: 3 Pages: 1789-1795

    • Peer Reviewed
  • [Journal Article] Synthesis and properties of fulerene (C70) complexes of 2,6-bis(porphyrin)-substituted pyrazine derivatives bound to a Pd(II) ion2010

    • Author(s)
      Y.Eda, T.Majima
    • Journal Title

      Supramol.Chem.

      Volume: 22 Pages: 517-523

    • Peer Reviewed
  • [Journal Article] 2,1,3-Benzothiadiazole Dimers : Preparation, Stucture, and Transanular Electronic Interactions of syn- and anti-[2.2](4,7)Benzothiadiazolophanes2010

    • Author(s)
      M.Watanabe, T.Majima
    • Journal Title

      Bull.Chem.Soc.Jpn.

      Volume: 83 Pages: 1155-1161

    • Peer Reviewed
  • [Journal Article] Photochemistry for the Synthesis of Noble Metal Nanoparticles2010

    • Author(s)
      M.Sakamoto, T.Majima
    • Journal Title

      Bull.Chem.Soc.Jpn.

      Volume: 83 Pages: 1133-1154

    • Peer Reviewed
  • [Journal Article] Single-molecule, single-particle fluorescence imaging of TiO_2-based photocatalytic reactions2010

    • Author(s)
      T.Tachikawa, T.Majima
    • Journal Title

      Chem.Soc.Rev.

      Volume: 39 Pages: 4802-1819

    • Peer Reviewed
  • [Presentation] CdTe量子ドット-ククルビットウリル超分子錯体における電子移動反応2011

    • Author(s)
      立川貴士
    • Organizer
      日本化学会 第91春季年会
    • Place of Presentation
      神奈川大学(神奈川県)
    • Year and Date
      2011-03-27
  • [Presentation] オリゴチオフェン高励起三重項状態からの電子移動2011

    • Author(s)
      藤塚守
    • Organizer
      日本化学会 第91春季年会
    • Place of Presentation
      神奈川大学(神奈川県)
    • Year and Date
      2011-03-27
  • [Presentation] 多孔性ユーロピウム金属-有機骨格による有機化合物の光誘起一電子酸化2011

    • Author(s)
      立川貴士
    • Organizer
      日本化学会 第91春季年会
    • Place of Presentation
      神奈川大学(神奈川県)
    • Year and Date
      2011-03-26
  • [Presentation] 一分子レベル蛍光観測によるDNA内電荷分離寿命の測定2011

    • Author(s)
      川井清彦
    • Organizer
      日本化学会 第91春季年会
    • Place of Presentation
      神奈川大学(神奈川県)
    • Year and Date
      2011-03-26
  • [Presentation] Photochemistry for Noble Metal Nanoparticles2011

    • Author(s)
      Tetsuro Majima
    • Organizer
      2011 Spring Symposium of Photochemistry Associationin Taiwan
    • Place of Presentation
      National Chiao Tung University (Taiwan)(招待講演)
    • Year and Date
      2011-02-15
  • [Presentation] Interfacial Electron Transfer from Excited Quantum Dot to Electron Acceptors2011

    • Author(s)
      Tetsuro Majima
    • Organizer
      産研国際シンポジウム
    • Place of Presentation
      ロイヤルオークホテル(滋賀県)
    • Year and Date
      2011-01-25
  • [Presentation] DNA Charge Transfer2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      2010 International Forum on Photoenergy Future(IFPEF 2010)
    • Place of Presentation
      Hawaii (USA)(招待講演)
    • Year and Date
      2010-12-21
  • [Presentation] Single-Molecule Fluorescence imaging of TiO_2 Photocatalytic Reactions2010

    • Author(s)
      Takashi Tachikawa
    • Organizer
      2010 International Chemical Congress of Pacific Basin Societies
    • Place of Presentation
      Hawaii (USA)
    • Year and Date
      2010-12-20
  • [Presentation] Rapid long-range charge transfer through DNA2010

    • Author(s)
      Kiyohiko Kawai
    • Organizer
      2010 International Chemical Congress of Paciftc Basin Societies
    • Place of Presentation
      Hawaii (USA)(招待講演)
    • Year and Date
      2010-12-18
  • [Presentation] Charge separation in DNA and photosensitized DNA damage2010

    • Author(s)
      Kiyohiko Kawai
    • Organizer
      2010 International Chemical Congress of Pacific Basin Societies
    • Place of Presentation
      Hawaii (USA)
    • Year and Date
      2010-12-18
  • [Presentation] Photophysical and Photochemical Properties of Nanosized Metal-Organic Frameworks2010

    • Author(s)
      Takashi Tachikawa
    • Organizer
      2010 International Chemical Congress of Pacific Basin Societies
    • Place of Presentation
      Hawaii (USA)
    • Year and Date
      2010-12-17
  • [Presentation] Efficient Photo-electronic Devices by Supramolecular Chemistry2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      2010 International Chemical Congress of Pacific Basin Societies
    • Place of Presentation
      Hawaii(USA)(招待講演)
    • Year and Date
      2010-12-16
  • [Presentation] Intramolecular Dimer Radical Cation and Anion of[3_n] Cyclophanes2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      2010 International Chemical Congress of Pacific Basin Societies
    • Place of Presentation
      Hawaii(USA)(招待講演)
    • Year and Date
      2010-12-16
  • [Presentation] Spatial Distribution and Transport Behavior of Chazge Carriers in a Single Titania Nanowire2010

    • Author(s)
      Takashi Tachikawa
    • Organizer
      2010 International Chemical Congress of Pacific Basin Societies
    • Place of Presentation
      Hawaii (USA)
    • Year and Date
      2010-12-16
  • [Presentation] Photoinduced Charge-Transfer Processes on Metal-Organic Framework2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      6th Asian Photochemistry Conference
    • Place of Presentation
      Wellington (New Zeeland)(招待講演)
    • Year and Date
      2010-11-18
  • [Presentation] Kinetic studies of photosensitized one electron oxidation of DNA2010

    • Author(s)
      Kiyohiko Kawai
    • Organizer
      第37回国際核酸化学シンポジウム
    • Place of Presentation
      はまぎんホール・ヴィアマーレ(神奈川県)
    • Year and Date
      2010-11-10
  • [Presentation] Electron Transfer in Supramolecular Donor-Acceptor Dyads of Porphyrin Isomers2010

    • Author(s)
      Mamoru Fujitsuka
    • Organizer
      2010KJFP
    • Place of Presentation
      Daegu (Korea)(招待講演)
    • Year and Date
      2010-10-26
  • [Presentation] Probing Photocatalytic Active Sites on a Single Titanosilicate Zeolite with a Redox-Responsive Fluorescent Dye2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      2010KJFP
    • Place of Presentation
      Daegu (Korea)(招待講演)
    • Year and Date
      2010-10-26
  • [Presentation] Photochemistry for the Synthesis of Noble Metal Nanoparticles2010

    • Author(s)
      Masanori Sakamato
    • Organizer
      2010KJFP
    • Place of Presentation
      Daegu (Korea)(招待講演)
    • Year and Date
      2010-10-26
  • [Presentation] Inter and Intramolecular Energy Transfer from Higher Triplet State of Oligothiophene2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      2010KJFP
    • Place of Presentation
      Daegu (Korea)
    • Year and Date
      2010-10-26
  • [Presentation] Electron Transfer from Oligothiophenes in the Higher Triplet Excited States2010

    • Author(s)
      Mamoru Fujitsuka
    • Organizer
      2010KJFP
    • Place of Presentation
      Daegu (Korea)
    • Year and Date
      2010-10-26
  • [Presentation] Interfacial Electron Transfer in Quantum Dot Modified with Pyromellitimide2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      106^<th> Korean Chemical Society Annual Meeeting
    • Place of Presentation
      Daegu (Korea)(招待講演)
    • Year and Date
      2010-10-15
  • [Presentation] Interfacial Electron Transfer in Quantum Dot Modified with Pyromellitimide2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      2^<nd> International Green Technology Forum
    • Place of Presentation
      Konkuk University (Korea)(招待講演)
    • Year and Date
      2010-10-14
  • [Presentation] ヨウ素デンプン反応による一塩基多型の検出2010

    • Author(s)
      川井清彦
    • Organizer
      第4回バイオ関連化学シンポジウム
    • Place of Presentation
      大阪大学(大阪府)
    • Year and Date
      2010-09-26
  • [Presentation] 炭素-ヘテロ原子結合解離による芳香族ラジカルアニオンの分解過程の研究2010

    • Author(s)
      山路稔
    • Organizer
      第53回放射線化学討論会
    • Place of Presentation
      名古屋大学(愛知県)
    • Year and Date
      2010-09-23
  • [Presentation] 単一分子蛍光分光法によるAu/TiO_2複合ナノ粒子の光触媒活性評価2010

    • Author(s)
      立川貴士
    • Organizer
      2010年光化学討論会
    • Place of Presentation
      千葉大学(千葉県)
    • Year and Date
      2010-09-10
  • [Presentation] ポルフィリンおよび異性体の超分子内電荷分離過程2010

    • Author(s)
      藤塚守
    • Organizer
      2010年光化学討論会
    • Place of Presentation
      千葉大学(千葉県)
    • Year and Date
      2010-09-10
  • [Presentation] 光触媒的ヨウ素生成反応を利用したDNA一塩基多型の検出2010

    • Author(s)
      川井清彦
    • Organizer
      2010年光化学討論会
    • Place of Presentation
      千葉大学(千葉県)
    • Year and Date
      2010-09-08
  • [Presentation] Charge Transfer in DNA2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      Conference of Korean Society of Photoscience
    • Place of Presentation
      Daejeon Convention Center(Korea)(招待講演)
    • Year and Date
      2010-08-31
  • [Presentation] 8-オキソグアニンはDNA内光電荷分離を促進し選択的に損傷する2010

    • Author(s)
      川井清彦
    • Organizer
      第32回日本光医学・光生物学会
    • Place of Presentation
      東京慈恵会医科大学(東京都)
    • Year and Date
      2010-07-30
  • [Presentation] Electron Transfer in Supmolecular Donor-Acceptor Dyads of Porphyrin Isomers2010

    • Author(s)
      Mamoru Fujitsuka
    • Organizer
      IUPAC Photochemistry
    • Place of Presentation
      Farrara(Italy)
    • Year and Date
      2010-07-14
  • [Presentation] Inter and Intramolecular EnergyTransfer from Higher Triplet State toward Molecular Devices2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      IUPAC Photochemistry
    • Place of Presentation
      Farrara(Italy)
    • Year and Date
      2010-07-14
  • [Presentation] Charge Transfer in DNA2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      EUCHEM Conference on Organic Free Radicals
    • Place of Presentation
      Bologna(Italy)(招待講演)
    • Year and Date
      2010-07-02
  • [Presentation] DNA内電子移動2010

    • Author(s)
      真嶋哲朗
    • Organizer
      第34回有機電子移動討論会
    • Place of Presentation
      大阪府立大学(大阪府)(招待講演)
    • Year and Date
      2010-06-25
  • [Presentation] Interfacial Electron Transfer in Quantum Dot Modified with Pyromellitimide2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      NRF Global Symposium
    • Place of Presentation
      The Grand Continental Seoul, (Korea)(招待講演)
    • Year and Date
      2010-06-22
  • [Presentation] DNAの光誘起一電子酸化損傷2010

    • Author(s)
      真嶋哲朗
    • Organizer
      第20回日本光線力学学会
    • Place of Presentation
      福井市地域交流プラザ(福井県)(招待講演)
    • Year and Date
      2010-06-12
  • [Presentation] One-electron Oxidation of DNA2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      11^<th> Int.Workshop on Radiation Damage to DNA
    • Place of Presentation
      Grand Hyatt Atlanta, (USA)(招待講演)
    • Year and Date
      2010-05-16
  • [Presentation] DNA Charge Transport2010

    • Author(s)
      Tetsuro Majima
    • Organizer
      CIfAR Nanoelectronics Spring Program Meeting
    • Place of Presentation
      Meritage Resort, California(USA)(招待講演)
    • Year and Date
      2010-05-11
  • [Book] "G-C Content independent long-range charge ransfer through DNA", in "Topics in Current Chemistry : Electronic and magnetic properties of chiral molecules and supramolecular architectures"2011

    • Author(s)
      K.Kawai, T.Majima
    • Total Pages
      14
    • Publisher
      Springer-Verlag, Inc., Berlin
  • [Remarks]

    • URL

      http://www.sanken.osaka-u.ac.jp/labs/mec/index.html

URL: 

Published: 2012-07-19  

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