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Published on: October 1, 2017
Kinetics of one- and two-directional charge hopping in one-dimensional systems: application to DNA
1Departement Chemie der Universität, Klingelbergstrasse 80, 4056 Basel, Switzerland.
Abstract:
A kinetic hopping model for one- (1D) and two-directional (2D) charge migration in a one-dimensional system has been developed and applied to the migration of a positive charge along guanine G sites in DNA strands. The charge lifetimes before trapping at a guanine cluster GGG allow an evaluation of the contribution of the superexchange mechanism in the charge transfer. For a 1D system with a small number of hopping sites and unbiased hopping, the explicit kinetic expression differs from a previously introduced equation but confirms the reported weak distance dependence.
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