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Development of molecular devices and room-temperature supercondoctors by using discotic liquid crystals of organic transition metal complexes

Research Project

Project/Area Number 02044060
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionJoint Research
Research Institutionshinshu University

Principal Investigator

YAMAMOTO Iwao  Professor, Shinshu University, 繊維学部, 教授 (60021169)

Co-Investigator(Kenkyū-buntansha) SIMON Jacques  Professor, ESPCI-Paris, 教授
FUJIMOTO Tetsuya  Assistant, Shinshu University, 繊維大学, 教務員 (90209099)
OHTA Kazuchika  Associate Professor, Shinshu University, 繊維学部, 助教授 (70160497)
JACQUES Simo  ESPGI大学, 教授
SIMON Jacges  ESPCI大学, 教授
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥5,300,000 (Direct Cost: ¥5,300,000)
Fiscal Year 1991: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1990: ¥2,600,000 (Direct Cost: ¥2,600,000)
KeywordsPhtalocyanine complexes / tetrapyraginoporphirazine complexes / semiconductor / superconductor columnar mesophase / one-dimentional / 一次元 / カラムナ-液晶 / ディスコティック液晶 / 有機金属錯体 / πーアクセプタ- / πードナ- / フタロシアニン / ピラジノポルフィラジン
Research Abstract

Octa (dodecyl) tetrapylazitioporphylazine (C_<12>)_8P_zH_2, the corresponding metal (II) complexes (C_<12>)_8P_zM, M : Cu, Ni, Co, octa (2-etliylliexyl) tetrapylazinoporphyrazine (2-EtC_6)_8P_zH_2 and the corresponding copper (II) complex (2-EtC_6)_8PzCu have been synthesized and their liquid crystalline statescharacterized. These properties have been compared to those of the corresponding plillialocyanines. The metal free (C_<12>)_8P_zH_2 derivative forms a hexagonal disordered columnar mesophases (D_<hd>)like (C_<12>)_8PcH_2, whereas (C_<12>)_8P_zM (M : Cu, Ni, Co) lead to centered rectangular disordered columnar mesophases (D_<rd>). The branched chain substituted metal free derivative (2-EtC_6)_8P_zH_2 leads to a tetragonal mesophase as (2-EtC_6O)_8PcCu forms an oblique mesophase, whereas (2-EtC_6O)_8PzCu leads to an unidentified liquid crystal. The tetrapyrazinoporphyrazine compounds are the first pi-acceptor columnar mesogens ; the half-wave reduction potentials are -0.41V for (C_<12>)_8P_zH_2 and -0.55V for (C_<12>)_8 P_zM (M : Cu, Ni). In comparison, plitalocyanine derivatives are reduced at -0.94V for (2-EtC_6O)_8PcH_2 and -1.05V for (2-EtC_6O)_8PcZn.
Octakis (alkyloxyphenyl) -phtarocyanine derivatives ( (C_nOph)_8PcH_2=8, 10, 12 and 18), their corresponding copper (II) complexes ( (C_nOph)_8PcH_2n=10, 12 and 18) and oktakis (2-ethylhexyl) PcH_2 have been synthesized and their mesomorphic properties characterized. (C_nOph)_8PcH_2, (n=12 and 18) exhibit hexagonal disordered columnar mesophases where (C_nOph)_8PcCu(n=12 and 18) yields a rectangular disordered columnar liquid crystal. Analkylphenyloxymethyl derivative, (C_<12>phOCH_2, was synthesized to determine the influence of the connecting link between the side chains aild the phtalocyanine macrocycle on the mesomorphic properties.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] G.Guillaud: "Field-Effect Transistors based on Intrinsic Molecular Semiconductors" Chem.Phys.Lett.167. 503-506 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] D.Markovitsi: "Exchange Perturbation in Phthalocyanine Columnar Liquid-Crystalline Phases" Chem.Phys.Lett.167. 467-470 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M.Bouvet: "Electrical Properties of Rare Earth Bisphthalocyanine and Bisnaphtalocyanine Complexes" Chem.Phys.Lett.172. 299-302 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Kazuchika Ohta: "Discotic Liquid Crystals of Transition Metal Complexed 9:Synthesis and Properties of Discotic liquid Crystals of Tetraphyrazinoporphirazine Derivatives" Mol.Cryst.Liq.Cryst.196. 13-26 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Kazuchika Ohta: "Discotic Lquid Crystals of Transition Metal Complexes X.Phthalocyanine Derivatives substituted with n-alkoxyphenyl Side Chains" Liq.Cryst.10. 357-368 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] D.Markovitsi: "One-Dimensional Triplet Energy Migraton in Columnar Liquid Crystals of Octasubstituted Phthalocyanines" J.Chem.Phys.95. 3620-3626 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] G. Guillaud: "Field-Effect Transistors based on Intrinsic Molecular Semiconductors" Chem. Phys. Lett.167. 503-506 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] D. Markovitsi: "Exchange Perturbation in Phthalocyanine Columnar Liquid Crystalline Phases" Chem. Phys. Lett.167. 467-470 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Bouvet: "Electrical Properties of Rare Earth Bisphthalocyanine and Bisnaphthalocyanine Complexes" Chem. Phys. Lett.172. 299-302 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Kazuchika Ohta: "Discotic Liquid Crystals of Transition metal Complexed9 : Synthesis and Properties of Discotic liquid Crystals of Tetraphyrazinoporphirazine Derivatives" Mol. Cryst. Liq. Cryst.196. 13-26 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Kazuchika Ohta: "Discotic Liquid Crystals of Transition Metal Complexes X. Phthalocyanine Derivatives substituted with n-alkoxyphenyl Side Chains" Liq. Cryst.10. 357-368 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] D. Markovitsi: J. Chem. Phys.One-Dimensional Triplet Energy Migration in Columnar Liquid Crystals of Octasubstituted Phthalocyanines, 3620-3626 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Kazuchika Ohta: "Discotic Liquid Crystals of Transition Metal Complexes X.Phthalocyanine Derivatives Substituted with n-alkoxyphenyl Side Chains" Liq.Cryst.10. 357-368 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] D.Mrkovitsi: "One-Dimensional Triplet Energy Migration in Columnar Liquid Crystals of Octasubstituted Phthalocyanines" J.Chem.Phys.95. 3620-3626 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 太田 和親: "Discotic liquid crystals of transition metal complexes 10:Phthalocyanine derivatives substituted with nーalkoxyphenyl side chains" Liquid Crystals.

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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