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2007 Fiscal Year Final Research Report Summary

A Study on the structure and reactivity of encounter complex

Research Project

Project/Area Number 16205009
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Inorganic chemistry
Research InstitutionTokyo Institute of Technology

Principal Investigator

KAIZU Youkoh  Tokyo Institute of Technology, Graduate School of Science, Professor (20016140)

Co-Investigator(Kenkyū-buntansha) OTSUKA Takuhiro  Tokyo Institute of Technology, Graduate School of Science, Assistant Professor (20280993)
ASANO Motoko  Tokyo Metropolitan University, Graduate School of Science and Engineering, Associate Professor (80201888)
Project Period (FY) 2004 – 2007
Keywordsencounter complex / reaction of photo-excitation energy-transfer / mixed-ligand complex / ruthenium(II) and chromium(III) complexes / aqueous solution and mixed-solvent / ethanol and acetonitrile / congeniality between ligands / bipyridine and phenanthroline
Research Abstract

It has been thought that the tris-chelate metal-complexes of mixed-ligands of some poly-pyridines are completely spherical in chemical reaction in solution. However, the experimental results of energy-transfer rate-constant from the mixed-ligand Ru(II)-complex to Cr(III) complex indicate that the energy-acceptor complexes do not exist around the mixed-ligands complexes of energy-donor in encounter complex in aqueous solution. In other words, the relative geometry between the mixed-ligand Ru(II)-complex and Cr(III) complex are not isotropic but anisotropic even in encounter complex in solution. The congeniality between donor's ligand and acceptor's ligand is very important for the structure of encounter complex in aqueous solution, for example, hydrophobicity and hydrophilicity.
In mixed-solvents of water : ethanol and water : acetonitrile (v.v. 8 : 2 and 6 : 4), the relative geometry of encounter complex is different from that in aqueous solution. These results indicate that the solvent molecules of ethanol and acetonitrile affect on the relative geometry of encounter complex.
Therefore, the determination of the rate-constant of photo-excitaion energy-transfer between metal-complexes makes it possible for the structure of encounter complex in solution as molecular level.
The results in this work have a very wide application, especially in the region of chemical reaction in a living body.

  • Research Products

    (22 results)

All 2008 2007

All Presentation (22 results)

  • [Presentation] 複錯体結晶M[Ru(bpy)_3][Cr_xAl_<1-x>(ox)_3](M^+=Na^+, Li^+; 0≦X≦1)中における光励起エネルギーマイグレーション(2)2008

    • Author(s)
      石井聡、中口朋子、大塚拓洋、海津洋行
    • Organizer
      日本化学会第88春季年会
    • Place of Presentation
      立教大学(東京)
    • Year and Date
      2008-03-29
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] 混合溶媒中における[Ru(bpy)_3]^<2+>とCr(III)錯体からなる遭遇イオン対の構造2008

    • Author(s)
      大木恵介、大塚拓洋、海津洋行
    • Organizer
      日本化学会第88春季年会
    • Place of Presentation
      立教大学(東京)
    • Year and Date
      2008-03-29
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] 混合配位子錯体[Ru(phen)_<3-n>(bpy)_n]^<2+>(n=0〜3)の[Cr(ox)_3]^<3->錯体による消光反応2008

    • Author(s)
      鈴木健史、大木恵介、桜井美智子、大塚拓洋、海津洋行
    • Organizer
      日本化学会第88春季年会
    • Place of Presentation
      立教大学(東京)
    • Year and Date
      2008-03-29
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] 非水溶媒中における輻射性イオン対のミクロな構造2008

    • Author(s)
      石原利彦、大塚拓洋、海津洋行
    • Organizer
      日本化学会第88春季年会
    • Place of Presentation
      立教大学(東京)
    • Year and Date
      2008-03-29
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Photo-excitaion energy-migration in double complex salts : M[Ru(bpy)_3][Cr_xAl_<1-x>(ox)_3] (M^+ =Na^+, Li^+ ; 0≦ X ≦1) (2)2008

    • Author(s)
      Ishii, Satoshi, Nakaguchi, Tomoko, Otsuka, Takuhiro Kaizu, Youkoh
    • Organizer
      88th Spring Conference of the chemical society of Japan
    • Place of Presentation
      at Rikkyo Univ. (Tokyo)
    • Year and Date
      2008-03-29
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] The structure of encounter complex composed of [Ru(bpy)_3]^<2+> and Cr(III) complex in mixed-solvent.2008

    • Author(s)
      Oki, Keisuke, Otsuka, Takuhiro, Kaizu, Youkoh
    • Organizer
      88th Spring Conference of the chemical society of Japan
    • Place of Presentation
      at Rikkyo Univ. (Tokyo)
    • Year and Date
      2008-03-29
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Emission quenching-reaction of mixed-ligand complex [Ru(phen)_<3-n>, (bpy)_n]^<2+> (n=0〜3) by Cr(III) complex.2008

    • Author(s)
      Suzuki, Takeshi, Oki, Keisuke, Sakurai, Michiko, Otsuka, Takuhiro, Kaizu, Youkoh
    • Organizer
      88th Spring Conference of the chemical society of Japan
    • Place of Presentation
      at Rikkyo Univ. (Tokyo)
    • Year and Date
      2008-03-29
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] The micro-structure of emissive ion pair in organic solvent.2008

    • Author(s)
      Ishihara, Toshihiko, Otsuka, Takuhiro, Kaizu, Youkoh
    • Organizer
      88th Spring Conference of the chemical society of Japan
    • Place of Presentation
      at Rikkyo Univ. (Tokyo)
    • Year and Date
      2008-03-29
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Energy Transfer from *[Ru(bpy)_3]^<2+>to Cr(III) Complexes in Mixed-Solvents; Water-Ethanol and Water-Acetonitrile.2007

    • Author(s)
      Keisuke Ohki, Takuhiro Otsuka, Youkoh Kaizu
    • Organizer
      Joint Conference of JMLG/EMLG Meeting 2007 and 30th Symposium on Solution Chemistry
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2007-11-23
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Energy transfer from ^*[Ru(bpy)_3]^<2+> to Cr(III) complexes in mixed-solvents ; water-ethanol and water-acetonitrile.2007

    • Author(s)
      Oki, Keisuke, Otsuka. Takuhiro, Kaizu, Youkoh
    • Organizer
      Joint Conference of JMLG/EMLG Meeting 2007 and 30th Symposium on Solution Chemistry
    • Place of Presentation
      at Fukuoka (in Japan)
    • Year and Date
      2007-11-23
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Crystal structure and photo-excitation energy migration in crystals of double-complex salts M[Ru(bpy)_3][Cr_xAl_<1-x>(ox)_3](M^+=Na^+, Li^+; 0≦x≦1)2007

    • Author(s)
      Satoshi Ishii, Tomoko Nakaguchi, Takuhiro Otsuka, and Youkoh Kaizu
    • Organizer
      The 8th conference of the Asian Crystallographic Association
    • Place of Presentation
      Taipei, Taiwan
    • Year and Date
      2007-11-05
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Crystal structure and photo-excitation energy migration in crystals of double-complex salts M[Ru(bpy)_3][Cr_xAl_<1-x>(ox)_3] (M^+ = Na^+, Li^+ ; 0≦ x ≦1)2007

    • Author(s)
      Ishii, Satoshi, Nakaguchi, Tomoko, Otsuka, Takuhiro, Kaizu, Youkoh
    • Organizer
      The 8th Conference of the Asian Crystallographic Association
    • Place of Presentation
      at Taipei (in Taiwan)
    • Year and Date
      2007-11-05
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] 複錯体結晶M[Ru(bpy)_3][Cr_xAl_<1-x>(ox)_3](M^+=Na^+, Li^+; 0≦X≦1)中における光励起エネルギーマイグレーション2007

    • Author(s)
      石井聡、中口朋子、大塚拓洋、海津洋行
    • Organizer
      第57回錯体化学討論会
    • Place of Presentation
      名古屋工業大学
    • Year and Date
      2007-09-26
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] 複錯体[Cr(N-N)_3][Cr(ox)_3](N-N=en, tn,)中における光励起エネルギー移動2007

    • Author(s)
      笠原敬男、大塚拓洋、海津洋行
    • Organizer
      第57回錯体化学討論会
    • Place of Presentation
      名古屋工業大学
    • Year and Date
      2007-09-26
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Photo-excitaion energy-migration in double complex salts : M[Ru(bpy)_3][Cr_xAl_1-x(ox)_3] (M^+=Na^+, Li^+ ; 0 ≦ X≦ 1)2007

    • Author(s)
      Ishii, Satoshi, Nakaguchi, Tomoko, Otsuka, Takuhiro, Kaizu, Youkoh
    • Organizer
      58th Conference of Coordination Chemistry
    • Place of Presentation
      at Nagoya Institute of Tech.
    • Year and Date
      2007-09-26
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Photo-excitaion energy-transfer in double complex salts : [Cr(N-N)_3] [Cr(ox)_3] (N-N = en, tn)2007

    • Author(s)
      Kasahara, Takao, Otsuka, Takuhiro, Kaizu, Kaizu, Youkoh
    • Organizer
      58th Conference of Coordination Chemistry
    • Place of Presentation
      at Nagoya Institute of Tech.
    • Year and Date
      2007-09-26
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Ru(II)錯体とCr(III)錯体からなる複錯体のアセトニトリル溶液中における発光と光励起エネルギー移動2007

    • Author(s)
      大塚拓洋、薗田新太郎、海津洋行
    • Organizer
      第20回配位化合物の光化学討論会
    • Place of Presentation
      ヴィラ舞子ホテル(兵庫県)
    • Year and Date
      2007-08-08
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] 水 アセトニトリル混合溶媒中における[Ru(bpy)_3]^<2+>からCr(III)錯体への光励起エネルギー移動2007

    • Author(s)
      大木恵介、大塚拓洋、海津洋行
    • Organizer
      第20回配位化合物の光化学討論会
    • Place of Presentation
      ヴィラ舞子ホテル(兵庫県)
    • Year and Date
      2007-08-08
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Ru(II)錯体とCr(III)錯体からなる複錯体の結晶構造と光励起エネルギー移動2007

    • Author(s)
      楊金剛、大塚拓洋、海津洋行
    • Organizer
      第20回配位化合物の光化学討論会
    • Place of Presentation
      ヴィラ舞子ホテル(兵庫県)
    • Year and Date
      2007-08-08
    • Description
      「研究成果報告書概要(和文)」より
  • [Presentation] Luminescence and photo-excitation energy-transfer of double complex salts composed of Ru(II) and Cr(III) complex in acetonitrile.2007

    • Author(s)
      Otsuka, Takuhiuro, Sonoda, Shintarou, Kaizu, Youkoh
    • Organizer
      Conterence of Photo-Chemistry of 20th Coordination Compound
    • Place of Presentation
      at Vila Maiko Hotel (Hyogo)
    • Year and Date
      2007-08-08
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Photo-excitaion energy-transfer from [Ru(bpy)_3]^<2+> to Cr(III) complex in Mixed-solvent of water and acetobitrile.2007

    • Author(s)
      Oki, Keisuke ; Otsuka, Takuhiro ; Kaizu, Youkoh
    • Organizer
      20th Conference of Photo-Chemistry of Coordination Compound
    • Place of Presentation
      at Vila Maiko Hotel (Hyogo)
    • Year and Date
      2007-08-08
    • Description
      「研究成果報告書概要(欧文)」より
  • [Presentation] Crystal structure and photo-excitaion energy-transfer in double complex salts composed of Ru(II) to Cr(III) complexes.2007

    • Author(s)
      Yang, Shingang, Otsuka, Takuhiro, Kaizu, Youkoh
    • Organizer
      20th Conference of Photo-Chemistry of Coordination Compound
    • Place of Presentation
      at Vila Maiko Hotel (Hyogo)
    • Year and Date
      2007-08-08
    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2010-02-04  

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