A Direct Simulation of Adiabatic Charge Transfer Through Bridged Organic Molecules

Author:

Koslowski Thorsten,Steinbrecher Thomas

Abstract

Abstract We approach the dynamics of adiabatic charge transfer through bridged triarylamine cations by a direct molecular dynamics simulation involving classical and quantum mechanical degrees of freedom. Within a simple yet chemically specific model, the quantum mechanical subsystem is described by a tight-binding Hamiltonian, which is coupled to a classical force field. From a population analysis of the quantum part, the charge transfer rate can be readily extracted, including the influence of memory effects. The direct computation of the associated thermodynamic potential establishes a close link to analytical rate concepts. The theoretical data are compared to experiments, and the limits and possible extensions of our approach are discussed.

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry

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