REACTION-RATES IN THE PHENOMENOLOGICAL ADIABATIC EXCITED-STATE ELECTRON-TRANSFER THEORY

The recently described phenomenological model for strongly adiabatic electron transfer (ET) in the lowest excited state (S1) of donor/acceptor molecules has been developed in more detail. The model has been generalized to include simultaneously two types of electron transfer, namely adiabatic ET in S1 and diabatic ET (S2 --> S1). A general definition of the ET 'reactant' survival probability is given in terms of the surviving charge on the donor. A relationship between the survival probability and integrated emission intensity from S1 and S2 is established. The use of this model is demonstrated employing the recent simulation results from our group on the excited-state ET of bianthryl (BA) and 4-(9-anthryl)-N,N'-dimethylaniline (ADMA).