Approximations in the theory of charge transfer through bridged systems

Abstract

Using Laplace transforms, analytical approximations are obtained in a simple way for the probabilities of charge transfer between donor and acceptor states coupled by a bridge. As a test, these are compared with accurate and numerical calculations when the bridge is treated as a standard diatomic Huckel chain, whose Ž . Ž . energies lie in two separate bands, the lower upper band being completely full empty . The analytical approximations are found to be generally accurate and provide useful insight into the charge transfer process.