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2006 Fiscal Year Final Research Report Summary

Construction of photo-functional molecular assembly and application for materials to control interfacial properties.

Research Project

Project/Area Number 14050026
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionThe University of Tokyo

Principal Investigator

SEGAWA Hiroshi  The University of Tokyo, Research Center for Advanced Science and Technology, Professor (50216511)

Project Period (FY) 2001 – 2006
KeywordsPhoto-function / Molecular assembly / Porphyrin / J-aggregates / Spin alignment / Solar cell / Nano-structure / Intermolecular interaction
Research Abstract

Studies on photo-functional interfaces are very important for the progress of photo-energy conversion and photocatalysts, and for the creation of novel functional materials. At the interfaces, which are formed between different materials, nanometer-scale structural control plays important roles for the appearance of physical properties and functionalities. In this study, molecular systems with ordered nano-structures were investigated as a material to control interfacial properties. In order to apply them as devices by constructing novel molecular assemblies which exhibit photo-functions and electronic functions, following studies were performed : (1) design of exciton-controlling materials by controlling nano-structures of porphyrin J-aggregates, (2) spin alignment of π-radicals of porphyrin arrays on the basis of nano-structural controlling, (3) formation of J-aggregates at the surface of titania and development of materials with electronic spin-functions derived from interfacial ele … More ctron transfer, and (4) development of energy-storable dye-sensitized solar-cells. In this study, it was found that protonated water-insoluble porphyrin derivatives are self-assembled at interface to form J-aggregates, and their association structure and excitonic interaction could be changed variously. It is large progress that efficient excitation energy transfer was observed at hetero-layered nano-sheets of porphyrin J-aggregates, which were developed in this study. On the other hand, multiplet spin states were achieved in this study by generating the π-radicals of directly-linked porphyrin arrays, indicating that spin-spin interactions can be modified by controlling the nano-structures. The result is important for molecular magnetism or development of magnetic functional materials. Furthermore, we have developed the fundamental structure of energy-storable dye-sensitized solar-cell, which is important breakthrough to achieve stable outputs and low costs, and is expected to contribute the propagation of solar-cells. Less

  • Research Products

    (38 results)

All 2006 2005 2004 2003 2002 Other

All Journal Article (23 results) (of which Peer Reviewed: 14 results) Presentation (13 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Geometry and solvent-polarity dependences of the relaxation dynamics of the singlet excited state of center-to-edge phosphorus(V)porphyrin heterodimers2006

    • Author(s)
      K. Nagao, Y. Takeuchi, H. Segawa
    • Journal Title

      J. Phys. Chem. B 110

      Pages: 5120-5126

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Photochemical switching behavior of azofunctionalized polymer liquid crystal/SiO_2 composite photonic crystal2006

    • Author(s)
      M. Moritsugu, S. N. Kim, T. Ogata, T. Nonaka, S. Kurihara, S. Kubo, H. Segawa, O. Sato
    • Journal Title

      Appl. Phys. Lett. 89

      Pages: 153131/1-153131/3

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Geometry and solvent-polarity dependences of the relaxation dynamics of the singlet excited state of center-to-edge phosphorus(V) porphyrin heterodimers2006

    • Author(s)
      K. Nagao, Y. Takeuchi, H. Segawa
    • Journal Title

      J. Phys. Chem. B 110

      Pages: 5120-5126

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Modulative magnetic interaction in π-diradicals of directly meso-linked porphyrin dimers2005

    • Author(s)
      J. Nakazaki, Y. Senshu, H. Segawa
    • Journal Title

      Polyhedron 24

      Pages: 2538-2543

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Spin alignment of orthogonal π-radicals of directly meso-meso linked porphyrin dimer, trimer, and tetramer2005

    • Author(s)
      J. Nakazaki, Y. Senshu, D. Machida, H. Segawa
    • Journal Title

      Trans. Mater. Res. Soc. Jpn. 30

      Pages: 739-742

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Control of the optical properties of liquid crystal-infiltrated inverse opal structures using photo irradiation and/or an electric field2005

    • Author(s)
      S. Kubo, Z. -Z. Gu, K. Takahashi, A. Fujishima, H. Segawa, O. Sato
    • Journal Title

      Chem. Mater. 17

      Pages: 2298-2309

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Axial ligand dependences of the relaxation dynamics of the singletexcited state of center-to-edge phosphorus(V)porphyrin heterodimers2005

    • Author(s)
      K. Nagao, H. Segawa
    • Journal Title

      Trans. Mater. Res. Soc. Jpn. 30

      Pages: 1239-1242

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Modulative magnetic interaction in Π-diradicals of directly meso-linked porphyrin dimers2005

    • Author(s)
      J. Nakazaki, Y. Senshu, H. Segawa
    • Journal Title

      Polyhedron 24

      Pages: 2538-2543

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Spin alignment of orthogonal Π-radicals of directly meso-meso linked porphyrin dimer, trimer, and tetramer2005

    • Author(s)
      J. Nakazaki, Y. Senshu, D. Machida, H. Segawa
    • Journal Title

      Trans. Mater. Res. Soc. Jpn. 30

      Pages: 739-742

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Axial ligand dependences of the relaxation dynamics of the singlet excited state of center-to-edge phosphorus(V)porphyrin heterodimers2005

    • Author(s)
      K. Nagao, H. Segawa
    • Journal Title

      Trans. Mater. Res. Soc. Jpn. 30

      Pages: 1239-1242

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Triplet π-diradical dication of directly meso-β-linked porphyrin dimer2004

    • Author(s)
      H. Segawa, Y. Senshu, J. Nakazaki, K. Susumu
    • Journal Title

      J. Am. Chem. Soc. 126

      Pages: 1354-1355

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Energy-storable dye-sensitized solar cell with a polyp yrrole electrode2004

    • Author(s)
      H. Nagai, H. Segawa
    • Journal Title

      Chem. Commun. 2004

      Pages: 974-975

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Tunable photonic band gap crystals based on a liquid crystal-infiltrated inverse opal structure2004

    • Author(s)
      S. Kubo, Z. -Z. Gu, K. Takahashi, A. Fujishima, H. Segawa, O. Sato
    • Journal Title

      J. Am. Chem. Soc. 126

      Pages: 8314-8319

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Electrochemical determination of charge transfer direction of "center-to-edge" phosphorus(V)porphyrin arrays2004

    • Author(s)
      Y. Takeuchi, K. Hirakawa, K. Susumu, H. Segawa
    • Journal Title

      Electrochem. 72

      Pages: 449-451

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Structure and properties of protonated water-insoluble porphyrin J-aggregates formed at liquid-liquid or gas-liquid interface2004

    • Author(s)
      H. Segawa, S, Okada, N, Horikawa, J. Nakazaki
    • Journal Title

      Trans. Mater. Res. Soc. Jpn. 29

      Pages: 907-910

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Triplet Π-diradical dication of directly meso-β-linked porphyrin dimer2004

    • Author(s)
      H. Segawa, Y. Senshu, J. Nakazaki, K. Susumu
    • Journal Title

      J. Am. Chem. Soc. 126

      Pages: 1354-1355

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Energy-storable dye-sensitized solar cell with a polypyrrole electrode2004

    • Author(s)
      H. Nagai, H. Segawa
    • Journal Title

      Chem. Commun. 2004

      Pages: 974-975

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Electrochemical determination of charge transfer direction of "center-to-edge" phosphorus(V) porphyrin arrays2004

    • Author(s)
      Y. Takeuchi, K. Hirakawa, K. Susumu, H. Segawa
    • Journal Title

      Electrochem. 72

      Pages: 449-451

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Structure and properties of protonated water-insoluble porphyrin J-aggregates formed at liquid-liquid or gas-liquid interface2004

    • Author(s)
      H. Segawa, S, Okada,. N, Horikawa, J. Nakazaki
    • Journal Title

      Trans. Mater. Res. Soc. Jpn. 29

      Pages: 907-910

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Substituent-control exciton in J-aggregates of protonated water-insoluble porphyrins2003

    • Author(s)
      S. Okada, H. Segawa
    • Journal Title

      J. Am. Chem. Soc. 125

      Pages: 2792-2796

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Time-resolved fluorescence study on liquid oligo(ethylene oxide)s : Coumarin 153 in poly(ethylene glycol)s and crown ethers2003

    • Author(s)
      H. Shirota, H. Segawa
    • Journal Title

      J. Phys. Chem. A 107

      Pages: 3719-3727

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Spin alignment of orthogonal π-radicals of directly meso-linked porphyrin arrays2002

    • Author(s)
      H. Segawa, D. Machida, Y. Senshu, J. Nakazaki, K. Hirakawa, F. Wu
    • Journal Title

      Chem. Commun. 2002

      Pages: 3032-3033

    • Description
      「研究成果報告書概要(和文)」より
    • Peer Reviewed
  • [Journal Article] Spin alignment of orthogonal Π-radicals of directly meso-linked porphyrin arrays2002

    • Author(s)
      H. Segawa, D. Machida, Y. Senshu, J. Nakazaki, K. Hirakawa, F. Wu
    • Journal Title

      Chem. Commun. 2002

      Pages: 3032-3033

    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Energy-storable dye・sensitized solar cell with a polypyrrole electrode(招待講演)2006

    • Author(s)
      H. Segawa, H. Nagai, K. Nakagawa, Y. Saito
    • Organizer
      Renewable Energy 2006
    • Place of Presentation
      千葉
    • Year and Date
      20061000
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Energy-storable dye-sensitized solar cell with a polypyrrole electrode (invited)2006

    • Author(s)
      H. Segawa, H. Nagai, K. Nakagawa, Y. Saito
    • Organizer
      Renewable Energy 2006
    • Place of Presentation
      Chiba
    • Year and Date
      20061000
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Control of Nano-Structure of Water-Insoluble Porphyrin J-Aggregate LBFilm (招待講演)2005

    • Author(s)
      Hiroshi Segawa
    • Organizer
      First International Symposium on the Photofunctional Chemistry of Complex Systems
    • Place of Presentation
      コナ(ハワイ)
    • Year and Date
      20051200
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Control of nano-structure of water-insoluble porphyrin J aggregate LB film (invited)2005

    • Author(s)
      H. Segawa
    • Organizer
      First International Symposium on the Photofunctional Chemistry of Complex Systems
    • Place of Presentation
      Kona (Hawaii)
    • Year and Date
      20051200
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] ポルフィリンJ会合体ナノロッド・ナノシートの構造と光機能の計測(有)待講演)2005

    • Author(s)
      瀬川浩司
    • Organizer
      日本化学会第85春季年会
    • Place of Presentation
      横浜
    • Year and Date
      20050300
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Structure of porphyrin J-aggregates nano-rod, nano-sheet, and their photo-functions (invited)2005

    • Author(s)
      H. Segawa
    • Organizer
      85th Annual Meetings of Chemical Society of Japan
    • Place of Presentation
      Yokohama
    • Year and Date
      20050300
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] 色素増感太陽電池 〜光充電とエネルギー貯蔵技術を中心に〜(招待講演)2004

    • Author(s)
      瀬川浩司
    • Organizer
      第57回コロイドおよび界面化学討論会
    • Place of Presentation
      山口
    • Year and Date
      20040900
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] ポルフィリンJ会合体のナノ構造制御-ナノロッドからナノシートまで-(招待講演)2004

    • Author(s)
      瀬川浩司
    • Organizer
      第54回錯体化学討論会
    • Place of Presentation
      熊本
    • Year and Date
      20040900
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Dye-sensitized solar cell : Photo-charging and energy storage technology (invited)2004

    • Author(s)
      H. Segawa
    • Organizer
      57th Symposium on Colloid and Interface Chemistry
    • Place of Presentation
      Yamaguchi
    • Year and Date
      20040900
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Contorol of nano-structures of porphyrin J-aggregates : From nano-rod to nano-sheet (invited)2004

    • Author(s)
      H. Segawa
    • Organizer
      54th Symposium of Complex Chemistry
    • Place of Presentation
      Kumamoto
    • Year and Date
      20040900
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Control of Nano-Structure of Artificial Porphyrin J・aggregates (招待講演)2004

    • Author(s)
      Hiroshi. Segawa
    • Organizer
      International Workshop on Supramolecular Nano-science of Chemically Programmed Pigments
    • Place of Presentation
      草津
    • Year and Date
      20040600
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Control of nano-structure of artificial porphyrin J-aggregates (invited)2004

    • Author(s)
      H. Segawa
    • Organizer
      International Workshop on Supramolecular Nano-Science of Chemically Programmed Pigments
    • Place of Presentation
      Kusatsu
    • Year and Date
      20040600
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Energy-storable dye-sensitized solar cell (invited)2003

    • Author(s)
      H. Segawa
    • Organizer
      Photoelectrochemistry workshop 2003
    • Place of Presentation
      Naha
    • Year and Date
      20031000
    • Description
      「研究成果報告書概要(欧文)」より
  • [Remarks] 「研究成果報告書概要(和文)」より

    • URL

      http://dolphin.c.u-tokyo.ac.jp/~segawa/

  • [Patent(Industrial Property Rights)] エネルギー貯蔵型色素増感太陽電池2004

    • Inventor(s)
      瀬川浩司, 中川慶一, 永井裕喜
    • Industrial Property Rights Holder
      東京大学
    • Patent Publication Number
      特開2006-172758特願2004-360270
    • Filing Date
      2004-12-13
    • Description
      「研究成果報告書概要(和文)」より

URL: 

Published: 2010-06-09  

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