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Development of Next-generation Functional Materials Based on Isolated Macromolecules

Research Project

Project/Area Number 15350128
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Polymer/Textile materials
Research InstitutionThe University of Tokyo

Principal Investigator

AIDA Takuzo  The University of Tokyo, graduate School of Engineering, Professor, 大学院・工学系研究科, 教授 (00167769)

Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥15,500,000 (Direct Cost: ¥15,500,000)
Fiscal Year 2004: ¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2003: ¥11,800,000 (Direct Cost: ¥11,800,000)
Keywordsmesoporous silica / polymerization / conductive polymer / 反応場 / 孤立化 / 配向制御
Research Abstract

Novel meso-structured silica gel was successfully obtained via sol-gel process using an amphiphile, containing thiophene and oligoethylene groups at its terminal positions, as a template. Oxidation of the composite with FeCl_3 caused polymerization of the thiophene within the silica channels, where fluorescence due to the formed polythiophenes observed, after removal of the oxidant by washing. Peak top of the fluorescence was bathochromically shifted from that observed for polythiophene obtained from the amphiphile alone, indicatging the possible elongation of the effective conjugation length in the silica channels. Although the silica channels in single domain are aligned in the same direction, it is well known that orientation of silica channels is macroscopically disordered because of the randomization of domains. For micrometer-range alignment of silica channels, sol-gel reaction at the lithographically patterned groove on the silicon substrate has been recently proposed and demonstrated to be useful. Collaboration with the group possessing this technique resulted in the successful alignment of polythiphenes. TEM observations of cross-sections parallel and perpendicular to the long axis of the groove clearly demonstrated that silica channels were aligned along with the long axis of the groove. Furthermore, polythiphenes in the channels were also aligned, as confirmed by anisotropic emission of the fluorescence.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (3 results)

All 2003 Other

All Journal Article (2 results) Publications (1 results)

  • [Journal Article] Template Synthesis of Polypyrrole Nanofibers Insulated within One-dimensional Silicate Channels : Hexagonal versus Lamellar for Recombination of Polarons into Bipolarons2003

    • Author(s)
      Midori Ikegame, Keisuke Tajima, Takuzo Aida
    • Journal Title

      Angew.Chem.Int.Ed. 42

      Pages: 2154-2157

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Template Synthesis of Polypyrrole Nanofibers Insulated within One-dimensional Silicate Channels : Hexagonal versus Lamellar for Recombination of Polarons into Bipolarons2003

    • Author(s)
      Midori Tkegame, Keisuke Tajima, Takuzo Aida
    • Journal Title

      Angew.Chem.Int.Ed. 42

      Pages: 2154-2157

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] Midori Ikegame, Keisuke Tajima, Takuzo Aida: "Template Synthesis of Polypyrrole Nanofibers Insulated within One-dimensional Silicate Channels : Hexagonal versus Lamellar for Recombination of Polarons into Bipolarons"Angew.Chem.Int.Ed.. 42. 2154-2157 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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