title: Long-range hole transport in DNA.
abstract: Abstract   A guanine radical cation (G(+•)) was site-selectively generated in double-stranded DNA and the hole transport from G(+•) to a GGG unit in G(+•)(TTG)(N)GG sites (N=1-4) was analyzed. The overall rate of the charge transfer exhibits a weak (algebraic) distance dependence, i. e. k ∝ N (η) with η = 1.7±0.2. This result supports that long-range hole migration in mixed DNA strands is a multistep hopping process between G bases.
authors.affiliation: a      Department of Chemistry   ,  University of Basel   ,  St. Johanns-Ring 19 ,    CH-4056   ,    Basel   ,    Switzerland.
authors.forename: S
authors.initials: S
authors.lastname: Wessely
authors.forename: B
authors.initials: B
authors.lastname: Giese
mesh_terms: D002412:Cations; D004247:DNA; D006147:Guanine
chemical_list: D002412:Cations; D006147:Guanine; D004247:DNA