Abstract.
Effects of structural and energetic disorder on nonadiabatic electron transfer (ET) reactions are discussed theoretically. To account for the sequential as well as the superexchange mechanism of ET our recent approach is used presented in J. Phys. Chem. A 105, 10176 (2001). The overall charge motion is characterized by the numerical solution of rate equations for the electronic state populations and an averaging with respect to the disorder configurations. Introducing a single effective transfer rate which can be deduced from the experiment the dependence of this rate is discussed on the geometry of the ET system as well as on the disorder model. The theory is applied to donor-acceptor complexes connected by oligomers of the amino acid proline. In particular, a pronounced dependence is found of the effective transfer rate on disorder with respect to the reorganization energy.
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Received: 14 April 2003, Published online: 22 July 2003
PACS:
34.10.+x General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.) - 34.30.+h Intramolecular energy transfer; intramolecular dynamics; dynamics of van der Waals molecules - 31.70.Hq Time-dependent phenomena: excitation and relaxation processes, and reaction rates
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Bade, L., Petrov, E.G. & May, V. On the theory of nonadiabatic bridge-mediated electron transfer. Eur. Phys. J. D 26, 187–196 (2003). https://doi.org/10.1140/epjd/e2003-00222-6
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DOI: https://doi.org/10.1140/epjd/e2003-00222-6