New insights into the mechanism of triplet radical-pair combinations. The persistent radical effect masks the distinction between in-cage and out-of-cage processes

…, J Mohanty, WM Nau, U Bhattacharjee…

Index: Chesta, Carlos A.; Mohanty, Jyotirmayee; Nau, Werner M.; Bhattacharjee, Urbashi; Weiss, Richard G. Journal of the American Chemical Society, 2007 ,  vol. 129,  # 16  p. 5012 - 5022

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Citation Number: 18

Abstract

Steady-state and laser-pulsed irradiations of dibenzyl ketone (ACOB0) and derivatives with a p-methyl or a p-hexadecyl chain (ACOB1 and ACOB16, respectively) have been conducted in polyethylene films with 0, 46, and 68% crystallinities. Calculation of the fractions of in-cage combinations of the triplet benzylic radical-pair intermediates based on photoproduct yields, F c, from ACOB16 are shown to be incorrect as a result of the kinetic ...