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Influence of magnetic field on the cage effect during photolysis of p-benzoquinone in n-propanol

✍ Scribed by I.V. Khudyakov; A.I. Prokof'ev; L.A. Margulis; V.A. Kuzmin

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 335 KB
Volume: 104
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(84)85614-6

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✦ Synopsis

The effect of a magnetic field on the escape of alkoxyl radicals from the solvent ca8e in n-propanol at 213 I< has been investigated. The alkoxyl radicals were obtained by photooxidation of n-propanol with the aid of p-beruoquinone m the triplet state. The radicals that escaped from the cage were trapped by PBN spin traps. The intensities of the ESR simals of stable spin-adduct radicals obtained during the irradiation under a magnetic field of 336 mT and a weak field of =2 mT were compared. It has been found that the application of a magnetic field of 336 mT increases the radical yield by 16 = 7% (standard deviation of 7%)). The role of the hyperfine coupling mechanism in the singlet--triplet evolution of the radical pairs investigated is discussed.

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