Chemically Induced Dynamic Nuclear Polarization in the Photochemical Reaction of Phenanthraquinone with Hydrogen Donors. I. Kinetics of Nuclear Spin Polarization

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概要

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• Strongly-enhanced NMR signals were observed in the photo-induced hydrogen abstraction reaction of phenanthraquinone with several hydrogen donors in benzene. Chemically-induced dynamic nuclear polarization was kinetically treated in the photochemical reaction during the course of irradiation by visible light and shut-off. It was found that the relaxation time of the nuclear-spin system under the irradiation is shorter by a factor of 2 to 4 than that in the black-out stage and that the enhancement factor for the methine proton of the 1,2-adduct of phenanthraquinone was evaluated as 1000–2000.

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著者

• Shindo Heisaburo

  Department of Chemistry, College of Liberal Arts and Science, Kyoto University

関連論文

• Chemically Induced Dynamic Nuclear Polarization in the Photochemical Reaction of Phenanthraquinone with Hydrogen Donors. I. Kinetics of Nuclear Spin Polarization

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