Abstract

Results of investigations into the kinetics of decelerated fluorescence decay for 1,2-benzpyrene in dodecane and coronene in n-octane at 77 K are presented in the paper. It is demonstrated that the reason for the nonexponential kinetics is a statistical spread of the triplet-triplet annihilation rate constant. A mathematical model is suggested which describes well the decelerated fluorescence decay in these systems.

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