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1996 Fiscal Year Final Research Report Summary

Reaction control by the accerelation and the decerelation of the intersystem crossing by microwave irradiation.

Research Project

Project/Area Number 07554064
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section試験
Research Field 物質変換
Research InstitutionTohoku University

Principal Investigator

AZUMI Tohru  Graduate School of Science, Tohoku University, Professor, 大学院・理学研究科, 教授 (90013490)

Co-Investigator(Kenkyū-buntansha) FUJII Kanae  JEOL Co.Institute of analytical apparatus, the chief of a section., 分析機器技術本部, 課長
MAEDA Kiminori  Graduate School of Science, Tohoku University, Research Assistant., 大学院・理学研究科, 助手 (70229300)
Project Period (FY) 1995 – 1996
Keywordsradical pair / spin pair / microwave / ADMR / RYDMR / SNP / CIDEP / reaction controll
Research Abstract

In this project we have tried to clear the effect of the microwave irradiation on the spin correlation of the radical pair (RP), and to control the photochemical reaction by this effect. For these purpose, we performed the investigation on the following subjects. (1) Construction of the new time-resolved RYDMR (Reaction Yield Detected Magnetic Resonance) and SNP (Stimulate Nuclear Polarization) detection system. For the investigation of the spin correlation of the radical pair, we need a method to observe the spin correlation in fast time resolution (-ns). We apply the various techniques (detection of emission, transient absorption, nuclear polarization, and photo-conductivity) for the observation of the microwave effect on the dynamics of the radical pair. (2) Discussion of the time-resolved ADMR spectra observed in the polymethylene-linked xanthone and xanthene. (3) Observation of the effect of the pulsed microwave on the spin dynamics of RP.(4) The spin dynamics of the RP in the micellar supercage studied by the time-resolved ESR and the stimulated nuclear polarization (SNP) spectra.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] V.F.Tarasov et al.: "Spin-correlated Radical Pairs in Micellar Systems : Mechanism of CIDEP and the Micellar Size Dependence." Chemical Physics. 212. 353-361 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Shinodo et al.: "SNP studies on the structure of the short-lived radical pair generated in the hydrogen abstraction reaction of anthraquinone from xanthene." Bulletin of the Chemical Society of Japan. 69. 2731-2734 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Maeda et al.: "The time-resolved absorption-detected magnetic resonance spectrum of the polymethylene linked biradical : The effect of the exchange integral." Chemical Physics Letter. 100. 110-114 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Yamakage et al.: "Time-resolved DNP measurements of intermediate free radicals created in the photo-chemical reaction of benzaldehyde.Mechanism of nuclear-polarization creation." Molecular Physics. 90. 431-436 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Murai et al.: "Controlling of Radical-Ion Pair Reactions with Microwave : Phoroconductivity detected Magnetic Resonance." Chemical Physics Letter. 264. 619-622 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S.S.Ali et al.: "Surprisingly Large Magnetic Field Effect in the Electron-Transfer Reaction of 4,4′-Bipyridine with Triethylamine in Acetonitrile" Chemical Physics Letter. (in press). (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] V.F.Tarasov et al.: "Spin-correlated Radical Pairs in Micellar Systems : Mechanism of CIDEP and the Micellar Size Dependence." Chemical Physics. 212. 353-361 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Shindo et al.: "SNP studies on the structure of the short-lived radical pair generated in the hydrogen abstraction reaction of anthraquinone from xanthene." Bulletin of the Chemical Society of Japan. 69. 2731-2734 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Maeda et al.: "The time-resolved absorption-detected magnetic resonance spectrum of the polymethylene linked biradical : The effect of the exchange integral." Chemical Physics Letter. 100. 110-114 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Yamakage et al.: "Time-resolved DNP measurements of intermediate free radicals created in the photochemical reaction of benzaldehyde. Mechanism of nuclear-polarization creation." Molecular Physics. 90. 431-436 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Murai et al.: "Controlling of Radical-Ion Pair Reactions with Microwave : Phoroconductivity detected Magnetic Resonance." Chemical Physics Letter. 264. 619-622 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.S.Ali et al.: "Surprisingly Large Magnetic Field Effect in the Electron-Transfer Reaction of 4,4'-Bipyridine with Triethylamine in Acetonitrile" Chemical Physics Letter. (in press).

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

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Published: 1999-03-16  

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