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Non-exponentiality in electron transfer kinetics: Static versus dynamic disorder models

Bagchi, Biman (1997) Non-exponentiality in electron transfer kinetics: Static versus dynamic disorder models. In: Proceedings of the Indian Academy of Sciences - Chemical Sciences, 109 (6). pp. 379-388.

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Abstract

Non-exponential electron transfer kinetics in complex systems are often analyzed in terms of a quenched, static disorder model. In this work we present an alternative analysis in terms of a simple dynamic disorder model where the solvent is characterized by highly non-exponential dynamics. We consider both low and high barrier reactions. For the former, the main result is a simple analytical expression for the survival probability of the reactant. In this case, electron transfer, in the long time, is controlled by the solvent polarization relaxation-in agreement with the analyses of Rips and Jortner and of Nadler and Marcus. The short time dynamics is also non-exponential, but for different reasons. The high barrier reactions, on the other hand, show an interesting dynamic dependence on the electronic coupling element, V-el.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Indian Academy of Sciences.
Keywords: Non-exponential dynamics;adiabatic surface;solvent reorganization energy.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Depositing User: Ms V Mangala
Date Deposited: 04 Aug 2011 05:06
Last Modified: 04 Aug 2011 05:13
URI: http://eprints.iisc.ac.in/id/eprint/38324

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