The Kinetics of Joined Action of Triplet-Triplet Annihilation and First-Order Decay of Molecules in the T1 State in the Case of Nondominant First-Order Process

Abstract EN

This paper presents the description of triplet-triplet annihilation in the case of nondominant first-order decay of molecules in the triplet state.

The kinetics of the statistical system is influenced by joined action of two processes: the first- and second-order decies.

This kinetics can be described with analytical function if the rate parameter of second-order reaction is constant.

The approach presented here combines the well-known Smoluchowski formula with the previously published intuitive and non-Fickian models of diffusion-controlled triplet-triplet annihilation.

The kinetics of the delayed fluorescence of anthracene is used as a practical example of applicability of the model proposed.

The advantages and limits of the proposed model are discussed.