Title: A general stochastic Liouville theory for sequential and superexchange electron-transfer reactions involving three Marcus potential surfaces
Abstract: A general theory for nonadiabatic electron-transfer reactions at high temperature involving Marcus parabolic potential surfaces is presented. The theory can be applied to a three-component system with a donor, a bridging intermediate and an acceptor as well as to a system with charge separation from a photo-excited state followed by charge recombination to a third or ground state. Using the nonperturbative stochastic Liouville approach, analytical expressions are derived for the superexchange and the sequential electron-transfer rate constants covering all three conditions: the ``nondegenerate,`` the ``degenerate`` and the ``quasi-degenerate`` regimes.