Method of Splitting Polarization Coordinates for the Description of Ultrafast Multistage Electron Transfer in a Non-Debye Medium

A method for constructing the space of a medium’s states in reactions of an ultrafast multistage intramolecular electron transfer (ET) in media with several relaxation times is developed. The method uses the splitting of polarization coordinates into relaxation components and is a generalization of two previously developed approaches used to describe multistage reactions and to consider multicomponent relaxation. Within the suggested generalized scheme, a model of charge transfer in a three-center molecular system in the environment with a two-component relaxation function is considered, an algorithm for constructing the diabatic free energy surfaces of electronic states is described, and a system of equations for the evolution of the distribution functions is derived. The results of the general model are shown to reproduce well-known solutions in particular cases.