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Time-Resolved Spectroscopy of Photoinduced Molecular Stractural Dynamics

Research Project

Project/Area Number 09045038
Research Category

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

Allocation TypeSingle-year Grants
Section一般
Research Field Physical chemistry
Research InstitutionWaseda University

Principal Investigator

TAKAHASHI Hiroaki  Waseda University, School of Science and Engineering, Professor, 理工学部, 教授 (40063622)

Co-Investigator(Kenkyū-buntansha) YUZAWA Tetsuro  Waseda University, Advanced Research Institute for Science and Engineering, Assistant Professor, 理工学総合研究センター, 講師 (40261200)
ITOH Koichi  Waseda University, School of Science and Engineering, Professor, 理工学部, 教授 (40008503)
中井 浩巳  早稲田大学, 理工学部, 助教授 (00243056)
ZADKOV Victo  モスクワ大学, 物理学部/国際レーザーセンター, 助教授
KOROTEEY Nik  モスクワ大学, 物理学部/国際レーザーセンター, 教授
酒井 誠  早稲田大学, 理工学部, 助手 (60298172)
VICTORN Zado  モスクワ大学, 国際レーザーセンター, 教授
NIKOLAIL Kor  モスクワ大学, 物理学部, 教授
岩田 耕一  早稲田大学, 理工学総合研究センター, 助教授 (90232678)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 1999: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1998: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1997: ¥2,200,000 (Direct Cost: ¥2,200,000)
KeywordsPhotoinduced Molecular Structure / Structural Dynamics / Time-Resolved Spectroscopy / 分子構造 / ピコ秒時間分解分光 / 光誘起分子 / 光励起分子ダイナミックス / ピコ秒時間分解ラマン分光 / ピコ秒時間分解紫外可視吸収
Research Abstract

Photochemistry of Chlorpromazine : It was found that in the photoreaction of phenothiazine, chlorophenothiazine, promazine and chlorpromazine a transient X having an absorption peak at 560nm is generated from the cation radical, and from this transient another transient Y with an absorption peak at 380 nm is produced
Photochemistry of Salicylanilide : It was shown by using time-resolved IR spectra that a transient with the lifetime of 8 μs was involved in the photoreaction of salicylanilide. It was concluded based on the absence of an amide II band that the transient takes a quinoid structure.
Photochemistry of Luciferein : It was found that the time-dependence of picosecond time-resolved absorption/fluorescence spectra of luciferin can be interpreted in terms of a 4-terms model. This indicates the existence of two isomeric species of S_1.
Structure and Dynamics of the Photo-excited States of Dibenzazepine : Three transients were detected by picosecond time-resolved absorption spectroscopy. They were assigned to the S_2 state, S_1 state in the Franck-Condon state, and S_1 state in a relaxed state. The Franck-Condon S_1 state is considered to be in a butterfly-like bent structure similar to the ground state. It was concluded that the relaxed S_1 state is in a planar structure.
Photochemistry of Biphenil : It was shown that the structure of binhenyl in the S_1 state changes from a twisted form (around the central C-C bond) to a planar trans form, a structure similar to that of the T_1 state. This structural change in the Sl state occurs within 20 ps after excitation
Photochemistry of Carbazole : It was found that photo-excitation of carbazole gave rise to a formation of the cation radical and carbazyl radical in polar solvents, while only the carbazyl radical was generated in nonpolar solvents. The cation radical is generated biphotonically, while the carbazyl radical is produced monophotonically.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 高橋博彰,岩田耕一: "Photoinduced Cl Transfer Reaction between Biphenyl and Carbon Tetrachloride Studied by Nanosecond Time-Resolved Infrared"Journal of Molecular Structure. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 高橋博彰: "Nanosecond Tine-Resolved Resonance Raman and Absorption Studies of the Photochemistry of Chlorpromazine"Journal of Raman Spectroscopy. 31. 785-790 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 高橋博彰: "Photoinduced Intramolecular Hydrogen Transfer Reaction of Ortho-Nitrobenzyl Compounds"Laser Chemistry. 19. 357-362 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 高橋博彰,A.Chikishev: "Picosecond Time-Resolved Absorption Spectroscopy of Luciferin"Chemical Physics Letters. 308. 369-372 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 高橋博彰: "Picosecond-Nanosecond Time-Resolved Resonance Raman Study of the Structure and Dynamics of the Excited States of 5-Dibenzosuberene"Journal of Raman Spectroscopy. 29. 11-18 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 高橋博彰,伊藤紘一: "Time-Resolved Total Internal Reflection Raman Scattering Study on Electronic-Field-Induced Reorientation Dynamics of Nematic"Molecular Crystals and Liquid Crystals. 312. 69-94+ (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 高橋博彰,Jaan Laane: "Structure and Dynamics of Electronic Excited States"Springer-Verlag, Berlin. 320 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] G.Sarata, M.Sakai, H.Takahashi: "Nanosecond Time-Resolved Resonance Raman and Absorption Studies of the Photochemistry of Chlorpromazine and Related Phenothiazine Derivatives"J.Raman Spectrosc.. 31. 785-790 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] H.Takahashi, Y.Watanabe, M.Sakai, M.Tachikawa.: "Photoinduced Intramolecular Hydrosen Transfer Reaction of ortho Nitrobenzyl Compounds"Laser Chem.. 19. 357-362 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] E.Yu.Cherednikova, A.Yu.Chikishev, O.V.Kosobokova, M.Mizuno, M.Sakaai, H.Takahashi: "Picosecond Time-Resolved Absorption Spectroscopy of Luciferin"Chem.Phys.Lett.. 308. 369-372 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] J.Laane, H.Takahashi, A.Bandrauk: "Structure and Dynamics in Electronic Excited States"Springer-Verlag, Berlin. (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] M.Sakai, M.Mizuno, H.Takahashi: "Picosecond-Nanosecond Time-Resolved Resonance Raman Study of the Structure and Dynamics of the Excited States of 5-Dibenzosuberene Derivatives"J.Raman Spectrosc.. 29. 11-18 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] N.Noguchi, M.Tachikawa, H.Takahashi: "One-Electron Photooxidation of NADH : Laser Photolysis, Time-Resolved Raman and ab Initio MO Calculation Study"Spectrosc.Biol.Mol.. 1. 161-162 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] T.Morikawa, E.Shirai, J.Tanno, H.Takahashi, Y.Yasuda, K.Itoh: "Time-resolved total internal reflection Raman scattering study on electric-field-induced reorientation dynamics of nematic liquid crystal of 4-hexyl-4'-cyanobiphenyl"Mol.Cryst.Liq.Cryst.. 312. 69-94 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 高橋博彰: "Nanosecond Time-Resolved Resonance Raman and Absorption Studies of the Photochemistry of Chlorpromazine and Related Phenothiazine Derivatives"Journal of Raman Spectroscopy. (印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] 高橋博彰: "Picosecond Time-Resolved Absorption Spectroscopy of Luciferin"Chemical Physics Letters. 308. 369-372 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 高橋博彰: "Photoinduced Intramolecular Hydrogen Transfer Reaction of Ortho Nitrobenzyl Compounds"Laser Chemistry. 19. 357-362 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] E.Cherednikova,A.Chikishev,O.Kosobokova,M.Mizuno,M.Sakai,H.Takahashi: "Picosecond Time-Resolved Absorption Spectroscopy of Luciferin" Chemical Physics Letters. (発表予定).

    • Related Report
      1998 Annual Research Report
  • [Publications] 高橋 博彰: "Plcosecond-Nanosecond Time-Resolved Resonance Raman Study of the Structure and Dynamics of the Excited States of 5-Dibenzosuberene Derivatives" Joumal of Raman Spectroscopy. (印刷中).

    • Related Report
      1997 Annual Research Report
  • [Publications] 高橋 博彰: "FT-IR and Resonance Raman Syudy of Photo-induced Valence Tautomerization of 2,3-Diphenylindenone Oxide" Mikrochimica Acta. 14. 233-234 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 高橋 博彰: "Structures and Dynamics of the Lowest Excited Trplet States and Cation Radicals of Phenothlazine and 2-Chlorophenothlazine:Transient Resonance Raman and Absorption Study" Joumal of Molecular Structure. 413. 49-59 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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