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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
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥4,300,000 (Direct Cost: ¥4,300,000)
Fiscal Year 1996: ¥4,300,000 (Direct Cost: ¥4,300,000)
Keywordsradical pair / spin pair / microwave / ADMR / RYDMR / SNP / CIDEP / reaction controll / ESR / 磁場効果 / 過渡吸収スペクトル / 過渡吸収検出磁気共鳴法 / マイクロ波効果
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.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 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
    • Related Report
      1996 Final Research Report Summary
  • [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
    • Related Report
      1996 Final Research Report Summary
  • [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
    • Related Report
      1996 Final Research Report Summary
  • [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
    • Related Report
      1996 Final Research Report Summary
  • [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
    • Related Report
      1996 Final Research Report Summary
  • [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
    • Related Report
      1996 Final Research Report Summary
  • [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
    • Related Report
      1996 Final Research Report Summary
  • [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
    • Related Report
      1996 Final Research Report Summary
  • [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
    • Related Report
      1996 Final Research Report Summary
  • [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
    • Related Report
      1996 Final Research Report Summary
  • [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
    • Related Report
      1996 Final Research Report Summary
  • [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
    • Related Report
      1996 Final Research Report Summary
  • [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)

    • Related Report
      1996 Annual Research Report
  • [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)

    • Related Report
      1996 Annual Research Report
  • [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)

    • Related Report
      1996 Annual Research Report
  • [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. (in press). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] H. Murai et al.: "Controlling of Radical-Ion Pair Reactions with Microwave : Phoroconductivity detected Magnetic Resonance." Chemical Physics Letter. 264. 619-622 (1997)

    • Related Report
      1996 Annual Research Report
  • [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)

    • Related Report
      1996 Annual Research Report
  • [Publications] Y. Yamakage: "Time-Resolved CIDNP-Detected ESR Spectrum in the Photochemical Hydrogen Abstraction Reaction of Benzoguinone" Magnetic Resonance in Medicine. 6. 393-395 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] K. Shindo: "Low Field CIDNP-Detected ESR Spectrum of Intermediate Radical Pair in Photoinduced Hydrogen-Abstraction Reaction." Magnetic Resonance in Medicine. 6. 407-409 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] K. Maeda: "CIDNP-Detected ESR Spectrum in the Photoinduced Electron Transfer Reaction." Magnetic Resonance in Medicine. 6. 410-412 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] S. S. Ali: "DIDNP Studies on the Photochemical Reaction of 4-Methyl-2-quinolinecarbonitrile with Optically Active(S)-or(R)-2-" Chemistry Letters. 227-228 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] S. Kimachi: "Phosphorescence and Zero-Field Optically Detected Magnetic Resonance Studies of(nd)^<10> Transition-Metal Complexes. 2." J. Phys. Chem.99. 7242-7245 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 安積 徹: "励起状態" 光化学. 96-101 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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