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Properties of C60 and related compounds

Research Project

Project/Area Number 04453080
Research Category

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

Allocation TypeSingle-year Grants
Research Field 工業物理化学・複合材料
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

YAMABE Tokio  Kyoto Univ.Mol.Eng.Professor, 工学研究科, 教授 (80025965)

Co-Investigator(Kenkyū-buntansha) MISAKI Yohji  Kyoto Univ.Mol.Eng.Assoc.Prof., 工学研究科, 助教授 (90202340)
TACHIBANA Akitomo  Kyoto Univ.Phys.Eng.Professor, 工学研究科, 教授 (40135463)
TANAKA Kazuyoshi  Kyoto Univ.Mol.Eng.Professor, 工学研究科, 教授 (90155119)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 1993: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1992: ¥4,500,000 (Direct Cost: ¥4,500,000)
KeywordsFullerene / Electronic state / Magnetic property / Ferromagnetic correlation / Multi-fullerene / Backy tube / Solid-state property / Spin state
Research Abstract

Electronic properties of bucky tube modelled by a sheet of helical graphite cylinder named "grahelix" have been examined based on the one-dimensional tight-binding crystal orbital method in the framework of the Huckel approximation. It has been found that there are two types of grahelix depending on the helical pitch, that is, one is energetically stable and semiconductive whereas the other less stable with metallic nature.
Moreover we elucidate that such metallic tubes are equivalent to those involving plural numbers of isolated cis-type polyacetylene skeletons arranged mostly in a helical manner on the tube surface. Such helical polyacetylene skeletons guarantee the metallic conduction path to the electrons near the Fermi level (spiralons). Control of the flow of these spiralons may open up a stage for nano-technology of the electronic devices such as molecular solenoid applicable to molecular electromagnet, molecular electric generator and so on.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] K.Tanaka: "Magnetic Properties of TDAE-C_<60> and TDAE-C_<70>,Where TDAE Is Tetrakis(dimethylamino)ethylene." Physical Review B. 47. 7554-7559 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tanaka: "Electronic Structure of C_<70>-" Chemical Physics Letters. 202. 394-398 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tanaka: "Magnetic Properties of Higher Fullerides TDAE-C_<84>,-C_<90> and -C_<96>" Solid State Communications. 85. 69-72 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Yamabe: "Electronic Properties of Bucky-Tube Model" Synthetic Metals. 55-57. 3142-3147 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tanaka: "Why Would Be Some Bucky Tubes Metallic?" Fullerene Science and Technologies. 1. 137-144 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tanaka: "Magnetic Properties of TDAE-C60 and TDAE-C70 where TDAE is Tetrakis(dimethylamino)ethylene" Phys.Rev.B47. 7554-7559 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tanaka: "Electronic Structure of C70" Chem.Phys.Lett.202. 394-398 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tanaka: "Magnetic Properties of Higher Fullerides TDAE-C84, C90, and C96" Solid State Commun.85. 69-72 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Yamabe: "Electronic Properties of Bucky-tube Model" Synth.Met.55-57. 3142-3147 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tanaka: "Why Some Bucky Tubes would be Metallic?" Fullerene Science & Technology. 1. 137-144 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K Tanaka 他: "Electronic Structure of C_<70>^-" Chemical Physics Letters. 202. 394-398 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Tanaka 他: "Magnetic Properties of TDAE-C_<60> and TDAD-C_<70> Where TDAE Is Tetrakis(dimethylamino)ethylene" Physical Review B. 47. 7554-7559 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Tanaka 他: "Magnetic Properties of Higher Fullerides TDAE-C_<84>,-C_<90> and -C_<96>" Solid State Communications. 85. 69-72 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Yoshizawa 他: "ESR Study of TDAE-C_<60> and TDAE-C_<70> in Solution" Chemical Physics Letters. 213. 498-502 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Tanaka 他: "Suppression of Magnetism of TDAE-(C_<60>)_<1-x>(C_<70>)_x Molecular Alloys" Solid State Communications. 87. 1055-1059 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Tanaka 他: "Electronic Properties of Bucky-Tube Model" Chemical Physics Letters. 191. 469-472 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Tanaka 他: "Electronic Structure of C_<70>^-" Chemecal Physics Letters. 202. 394-398 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] K.Tanaka 他: "Magnetic Properties of Higher Fullerides TDAE-C_<84>.-C_<90> and -C_<96>" Solid State Communications. 85. 69-72 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Yamabe 他: "Electronic Properties of Bucky-Tube Model" Synthetic Metals.

    • Related Report
      1992 Annual Research Report
  • [Publications] K.Tanaka 他: "Magnetic Properties of TDAE-C_<60> and TDAE-C_<70>,Where TDAE Is Tetrakis(dimethylamino)ethylene" Physical Review B.

    • Related Report
      1992 Annual Research Report
  • [Publications] K.Tanaka 他: "Why Would Be Some Bucky Tubes Metallic?" Fullerene Science and Technologies.

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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