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1998 Fiscal Year Final Research Report Summary

A Novel Synthesis of Bipyridine-Containing Hybrid Compounds Directed High Efficiency of the Electron Transfer and Their Functional Evaluation

Research Project

Project/Area Number 09650943
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 有機工業化学
Research InstitutionSeikei University

Principal Investigator

KATOH Akira  Seikei University, Faculty of Engineering, Professor, 工学部, 教授 (00167339)

Project Period (FY) 1997 – 1998
Keywordshybrid compound / bipyridine / phenothiazine / methyl viologen / L-amino acid / ruthenium complex / emission lifetime / emission quantum yield
Research Abstract

The artificial duplication of photosynthesis is one of most challenging themes in a viewpoint of the efficient utilization of solar energy. Many chemists have focused on improvement of the efficiency of the electron transfer. In this project, I investigated a novel synthesis of bipyridine-containing hybrid compounds directed high efficiency of the electron transfer and their functional evaluation.
1. A variety of pyridylpyridones bearing (p-substituted)benzene at CA position were prepared from (p-substituted)benzaldehydes via 2 steps. 2. Pyridylpyridones were subjected to the selective 0-alkylation to afford 2, 27-bipyridines bearing amino or carboxyl group at the side chain. 3. New 2, 2'-bipyridine-ruthenium complexes showed similar physical properties to the parent tris(2,2'-bipyridme)ruthenium(II) complex. 4. Hybrid compounds composed of L-ornithine or L-lysine, 2,2'-bipyridine, phenothiazine, and methyl viologen were synthesized using the stepwise coupling. 5. Hybrid compound-ruthenium(II) complexes showed characteristic MLCT bands around at 460 nm in MeCN.6. Emission life times and emission quantum yields of ruthenium complexes were measured in aqueous solutions under Ar atmosphere. PHIem (ca. 0.0012) and tern (ca. 25 ns) were dramatically decreased compared with the parent tris(2,2'-bipyridine)ruthenium complex.
In conclusion, the present hybrid compound-ruthenium(II) complexes were demonstrated to be applicable to photocatalysts which showed high efficiency of the electron transfer.

  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] 加藤 明良: "側鎖にアミノ基をもつビピリジンを用いたハイブリッド化合物の新規合成と性質" 第34回 有機合成化学協会関東支部シンポジウム講演要旨集. 146-147 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 加藤明良: "Synthesis of 2, 2′-Bipyridines Bearing Amino or Carboxyl Group at the Side Chain and Physical Properties of Their Ruthenium(II) Complexes" Heterocycles. 49. 281-296 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Akira Katoh: "A Novel Synthesis and Property of hybrid Compounds Using Bipyridines Bearing the Amino Group at the Side Chain" Abstracts for 34th Symposium of the Synthetic Organic Chemistry (Nagaoka). 146-147 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Akira Katoh: "Synthesis of 2,2'-Bipyridines Bearing Amino or Carboxyl Group at the Side Chain and Physical Properties of Their Ruthenium (II) Complexes" Heterocycles. 49. 281-296 (1998)

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

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Published: 1999-12-08  

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