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CPP: Chemische Physik und Polymerphysik

CPP 4: SYMPOSIUM Materials for Molecular Electronics

CPP 4.4: Talk

Monday, March 24, 2003, 16:00–16:30, ZEU/160

Electron and Hole Transfer through DNA — •Bernd Giese — Departement Chemie, Universitaet Basel, St Johanns Ring 19, CH-4056 Basel

Experiments of the last years have shown that electrons and holes can travel over long distances through the biopolymer DNA in a multistep hopping reaction [1]. The process starts by injection of the charge into one of the DNA bases, which then trigger the charge transfer through DNA. The mechanism of the charge injection and charge transfer steps will be presented. Possible applications for molecular devices and biological consequences will be discussed.

[1] B. Giese, J. Amaudrut, M. Spormann, S. Wessely. No-dqDirect observation of hole transfer through DNA by hopping between adenine bases and by tunnellingNo-dq. Nature 2001, 412, 318.