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Charge Transfer in DNA

  • Philipp O. J. SchererEmail author
  • Sighart F. Fischer
Chapter
Part of the Biological and Medical Physics, Biomedical Engineering book series (BIOMEDICAL)

Abstract

Photoinduced charge transfer in DNA occurs via two different hole-transfer mechanisms, diffusive hopping between sites with similar potential and tunneling over barriers with high potential. We discuss a simple kinetic scheme for diffusive motion and determine the stationary solution of the corresponding master equation. A continuous treatment leads to the diffusion equation. Hole tunneling appears over one or more bridge states and has to be described by a higher order superexchange mechanism. In general, both mechanisms are effective, dependent on the DNA sequence.

Copyright information

© Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  1. 1.Physikdepartment T38Technische Universität MünchenGarchingGermany

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