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1989 Fiscal Year Final Research Report Summary

Ultra-anisotropic Conducting Molecular Device by Precise Control of Polymerization

Research Project

Project/Area Number 63470098
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 高分子合成
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

SHIMIDZU Takeo  Kyoto University Graduate School of Engineering Professor, 工学部, 教授 (10025893)

Co-Investigator(Kenkyū-buntansha) SEGAWA Hiroshi  Kyoto University Graduate School of Engineering Assistant, 工学部, 助手 (50216511)
IYODA Tomokazu  Kyoto University Graduate School of Engineering Assistant, 工学部, 助手 (90168534)
Project Period (FY) 1988 – 1989
KeywordsPrecise Control of Polymerization / Molecular Device / Ultra-anisotropic Conductivity / Langmuir-Blodgett Film / Electropolymerization / Layered Structure / Conducting Polymer / Amphiphilicity
Research Abstract

The preparative method for organic thin films of various functional materials, especially those with specific ultra-fine structures, is one of the significant strategy for realizing a coming molecular electronic device. Novel type of functions reflecting in ultra- fine film structures could be expected when the designed structural dimension reaches less than hundreds angstrom order. Our aim was to do those by using conducting polymer with interesting electric and optical properties as a hopeful material and Langmuir-Blodgett technique as a basic preparative method.
1. Several amphiphilic pyrrole derivatives were synthesized. Their monomeric Langmuir-Blodgett films were treated with unique electropolymerization, followed by conducting polymer LB films having layered structure of conducting polypyrrole and insulating long alkyl chain layers. The resulting LB film showed 10-order anisotropy between lateral and perpendicular conductivities. The layered structure was confirmed by electron microscopic observation of the cross section and X-ray diffraction patterns.
2. The above method was applied to other conducting polymers, polyaniline and polythiophene, so as to generalize our successful result. In case of polyaniline, pH dependence of conductivity is shown in polymerization. In case of polythiophene, high conductivity and stability towards air and moisture are expected. Another method is first to prepare amorphous polypyrrole with a long alkyl dopant through electrochemically anodic doping which we have reported previously, and then to obtain its LB film with 3-order anisotropy of conductivity. The above results provides new approach to design conducting polymer ultra-thin films and to gift to them new type of functions, including quantum-mechanical functions.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] T.Shimidzu: "A Novel Anisotropic Conducting Thin Film having a Conducting and Insulating Layered Structure" Thin Solid Fiims. 160. 67-79 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Shimidzu: "Preparative Method for Incorporation of Functional Units in Conducting Polymers" Molecular Electronic Devices. 599-608 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 清水剛夫: "異方性導電高分子薄膜の合成と性質" 日本化学繊維研究所講演集. 45. 43-48 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Shimidzu: "Ultra-anisotropic Conducting Polymer LB Multilayer" MRS Int'l Mtg.on Adv.Mats.1. 237-240 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Shimidzu: "Derivatization of Conducting Polymers with Functional Molecules directed via Molecular Structrual Control towards a Molecular Device" Reactive Polymers. 11. 177-189 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Ando: "Syntheses of Conducting Polymer Langmuir-Blodgett Multilayers" Thin Solid Films. 179. 225-231 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Shimidzu: "A Novel Anisotropic Conducting Thin Film having a Conducting and Insulating Layered Structure" Thin Solid Films, 160 67-79, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Shimidzu: "Preparative Method for Incorporation of Functional Units in Conducting Polymers" Molecular Electronic Devices 599-608, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takeo Shimidzu: "Syntheses and Properties of Anisotropic Conducting Polymer Thin Film" Annual Rep. Inst. Chem. Fiber Japan, 45, 43-48, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Shimidzu: "Ultra-anisotropic Conducting Polymer LB Multilayer" MRS Int'l Mtg. on Adv. Mats., 1, 237 1989.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Shimidzu: "Derivatization of Conducting Polymers with Functional Molecules directed via Molecular Structural Control towards a Molecular Device" Reactive Polymers, 11 177-189, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Ando: "Syntheses of Conducting Polymer Langmuir-Blodgett Multilayers" Thin Solid Films, 179 225-231, 1989.

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-03-26  

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