Abstract

Lifetime distributions of photoproduced N,N,N',N'-tetramethylbenzidine cation radicals in micelles of sodium decyl sulfate and of sodium dodecyl sulfate in H/sub 2/O and D/sub 2/O were determined from inverse Laplace transforms of the experimental decay at room temperature. An expression is given for adequately approximating the decay curves. Hydrophobic interaction due to substitution of D/sub 2/O for H/sub 2/O results in broadening of the lifetime distribution accompanied by an increase in the effective lifetime. The lifetime broadening effect was found to be similar in both kinds of micelles.

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