title: Kinetics of one- and two-directional charge hopping in one-dimensional systems: application to DNA.
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.
authors.affiliation: Departement Chemie der Universität, Klingelbergstrasse 80, 4056 Basel, Switzerland.
authors.forename: X
authors.initials: X
authors.lastname: Wang
authors.forename: W M
authors.initials: WM
authors.lastname: Nau
mesh_terms: D000465:Algorithms; D004247:DNA / Q000737:chemistry* / Q000378:metabolism; D007700:Kinetics; D008962:Models, Theoretical; D010084:Oxidation-Reduction
chemical_list: D004247:DNA