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1995 Fiscal Year Final Research Report Summary

Synthesis of novel organosilicon polymers and approach to high functionality materials

Research Project

Project/Area Number 06555274
Research Category

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

Allocation TypeSingle-year Grants
Research Field 有機工業化学
Research InstitutionHIROSHIMA UNIVERSITY

Principal Investigator

ISHIKAWA Mitsuo  Hiroshima University, Faculty of Engineering, Professor, 工学部, 教授 (20025985)

Co-Investigator(Kenkyū-buntansha) OHSHITA Joji  Hiroshima University, Faculty of Engineering, Assistant Prof., 工学部, 助手 (90201376)
KUNAI Atsutaka  Hiroshima University, Faculty of Engineering, Associate Prof., 工学部, 助教授 (90029190)
Project Period (FY) 1994 – 1995
KeywordsPhotoactive polymer / Orgamosilicon polymer / Conducting polymer / Bramched polymer
Research Abstract

1.Poly [(disilanylene) oligophenylenes] and poly [(disilanylene) oligothienylenes] were synthesized and their photochemical, conducting, and thermal properties were investigated. Interstingly, the photoactivities of these polymers decrease with increasing the number of phenylene and thienylene units betweed disilanylene units. These results are in accordance with the results of crystal orbital calculations on simplyfied model polymers, which predict that both HOCO and LUCO interchange from sigma-type to pi-type with the expansion of the pi-electron system.
2.Polymers having a pyridylene unit were synthesized. These polymers are highly photoactive and become conducting upon doping with I_2 and FeCl_3.
3.We found that regiospecific 1,2-hydrosilylation of poly (silylenediethynylene) in the presence of a rhodium catalyst offers a convenient route to branched polymers. These polymers are soluble in common organic solvents and can be wholly characteryzed by spectrometric analysis. We also prepared some branched oligosilanes as models of branched polysilanes and investigated their photochemical properties.
4.Synthesis of polymers containing a silole skeletal by ring-openeing polymerization of the respective cyclic compounds, synthesis, reactions, and thermal properties of Si-H-containing polymers, and preparation of polymers by electrochemical Si-Si bond formation were also investigated.

  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] A. Kunai: "Electrochemistry of Organosilicon Compounds-5. Synthesis of Poly[(1, 2-dimethyl diphenyl disilany lenes]by Electrolysis of Bis(chloromethylphenylsilyl) benzenes" Electrochimica Acta. 39. 2089-2092 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J. Ohshita: "Polymeric Oranosilicon Systems. XVIII. Synthesis and Photochemical Properties of Poly[2, 5-(disilanylene) thienylenes]" J. Organomet. Chem.468. 55-62 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M. Ishikawa: "Polymeric Organosilicon Systems. 19. Preparation of Branched Polymers by Selective Hydro-silylation of Poly[(silylene) but-1,3-diynes]" Organometallics. 13. 26-27 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J. Ohshita: "Polymeric Organosilicon Systems. 20. Synthesis and Some Reactions of Functionalyzed Organosilicon Polymers, Poly[(silylene) phenylenes]" Macromolecules. 27. 5583-5590 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J. Ohshita: "Photolysis of Organo-polysilanes. Photochemical Behavior of Branched Polysilanes" Organometallics. 13. 3227-3232 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Tanaka: "Electrnic Structures of Organosilicon Polymers Containing Thienylene Units" Organometallics. 13. 3496-3501 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J. Ohshita: "Polymeric Organosilicon Systems. 22. Synthesis and Photochemical Properties of Poly[(disilnylene) oligophenylenes]and Poly[(silylene) biphenylenes]" Organometallics. 13. 5002-5012 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A. Kunai: "Polymeric Organo-silicon Systems. 21. Synthesis and Photochemical, Conducting, and Thermal Properties of (2, 6-and 2, 5-Diethynylenepyridylene) -disilanylene Polymers" Organometallics. 14. 714-720 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J. Ohshita: "Polymeric Organosilicon Systems. XXIII. Synthesis and Photochemical and Thermal Properties of (E) -and (Z) -Poy[(disilanylene) ethenylenes]" J. Organomet. Chem.489. 165-173 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] E. Toyoda: "Polymeric Organosilicon Systems. 24. Anionic Polymerization of 4, 5, 10-Trisilabicyclo[6, 3, 0]-undeca-1(11), 8-diene-2, 6-diynes" Organometallics. 14. 1089-1091 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A. Kunai: "Polymeric Organosilicon Systems. 25. Preparation of Branched Polymers by Regiospecific Hydrosilylation of Poly[(silylene) diethynylenes]and Their Properties" Organometallics. 15. 75-83 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A. Kunai: "Polymeric Organosilicon Polymers. 26. Synthesis and Photochemical and Conducting Properties of Poly[(tetraethyldisilanylene) oligo(2, 5-thienylenes)]" Organometallics. (in press).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Kunai, E.Toyoda, T.Kawakami, and M.Ishikawa: "Electrochemistry of Organosilicon Compounds-5. Synthesis of Poly [(1,2-dimethydiphenyl-disilaylenes] by Electrolysis of Bis (chloromethyphenylsilyl) benzenes" Electrochimica Acta. 39. 2089-2092 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J.Ohshita, D.Kanaya, and M.Ishikawa: "Polymeric Oranosilicon Systems. XVIII.Synthesis and Photochemical Properties of Poly [2,5- (disilanylene) -thienylenes]" J.Organomet.Chem.468. 55-62 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Ishikawa, E.Toyoda, T.Horio, and A.Kunai: "Polymeric Organosilicon Systems. 19.Preparation of Branched Polymers by Selective Hydro-Silylation of Poly [(silylene) but-1,3-diynes]" Organometallics. 13. 26-27 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J.Ohshita, M.Ishii, Y.Ueno, A.Yamashita, and M.Ishikawa: "Polymeric Organosilicon Systems. 20.Synthesis and Some Reactions of Functionalyzed Organosilicon Polymers, Poly [(silylene) phenylenes]" Macromolecules. 27. 5583-5590 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J.Ohshita, T.Yoshitomi, and M.Ishikawa: "Photolysis of Organopolysilanes. Photochemical Behavior of Branched Polysilanes" Organometallics. 13. 3227-3232 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Tanaka, H.Ago, T.Yamabe, M.Ishikawa, and T.Ueda: "Electrnic Structures of Organosilicon Polymers Containing Thienylene Units" Organometallics. 13. 3496-3501 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J.Ohshita, T.Watanabe, D.Kanaya, H.Ohsaki, M.Ishikawa, H.Ago, K.Tanaka, and T.Yamabe: "Polymeric Organosilicon Systems. 22.Synthesis and photochemical Properties of Poly [(disilnylene) oligo-phenylenes] and Poly [(silylene) biphenylenes]" Organometallics. 13. 5002-5012 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Kunai, E.Toyoda, K.Horata, and M.Ishikawa: ""Polymeric Organo-silicon Systems. 21.Synthesis and Photochemical, Conducting, and Thermal Properties of (2,6-and 2,5-Diethynylenepyridylene) disilanylene" Organometallics. 14. 714-720 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J.Ohshita, D.Kanaya, T.Watanabe, and M.Ishikawa: ""Polymeric Organosilicon Systems. XXIII.Synthesis and Photochemical and Thermal Properties of (E) -and (Z) -Poy [(disilanylene) ethenylenes]" J.Organomet.Chem.489. 165-173 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] E.Toyoda, A.Kunai, and M.Ishikawa: "Polymeric Organosilicon Systems.24.Anionic Polymerization of 4,5,10-Trisilabicyclo [6,3,0] -undeca-1 (11), 8-diene-2,6-diynes" Organometallics. 14. 1089-1091 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Kunai, E.Toyoda, I.Nagamoto, T.Horio, M.Ishikawa: ""Polumeric Organosilicon Systems. 25.Preparation of Branched Polymers by Regiospecific Hydrosilylation of Poly [(silylene) diethynylenes] and Their Properties" Organometallics. 15. 75-83 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Kunai, T.Ueda, K.Horata, E.Toyoda, I.Nagamoto, J.Ohshita, M.Ishikawa, and K.Tanaka: "Polymeric Organosilicon Polymers. 26.Synthesis and Photochemical and Conducting Properties of Poly [(tetraethyldisilanylene) oligo (2,5-thienylenes)]" Organometallics. (in press).

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

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Published: 1997-03-04  

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