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Photodeoxygenation of transient p-methoxybenzyl-peroxy radical in solution at room temperature

✍ Scribed by Kunihiro Tokumura; Hideyo Nosaka; Yoshihisa Fujiwara

Publisher: Elsevier Science
Year: 1991
Tongue: English
Weight: 383 KB
Volume: 177
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(91)90084-m

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✦ Synopsis

Transient absorption and two-step laser-induced-fluorescence measurements confirmed that the transient pmethoxybenzylperoxy radical generated via the oxygenation of the pmethoxybenzyl radical releases molecular oxygen upon the 308 nm pulse excitation. In the air-saturated n-hexane and cyclohexaue at room temperature, the respective lifetimes of the peroxy radical were determined to be 120 aud 187 pa, which are sufficiently longer than the lifetime ( I 10-I 30 ns) of the pmethoxybenzyl radical. It was assumed that the peroxy radical is subjected to H-abstraction from the solvent molecule in the dark.

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