A Comparison of Electron-Transfer Rates of Ferrocenoyl-Linked DNA
Journal of the American Chemical Society2003Vol. 125(29), pp. 8724–8725
Citations Over TimeTop 10% of 2003 papers
Yi‐Tao Long, Chen-Zhong Li, Todd C. Sutherland, M’hamed Chahma, Jeremy S. Lee, Heinz‐Bernhard Kraatz
Abstract
Electron transfer (ET) through two configurations of double-stranded (ds)-DNA was investigated by the attachment of a ferrocenoyl (Fc)-labeled and thiol-labeled DNA to Au electrodes. The first configuration positions the Fc moiety on the same strand as the thiolate, whereas the second configuration positions the Fc group on the complementary strand. The subtle difference in structure leads to a difference in E0' values (29 mV) and in ET rate constants (25 vs 115 s-1). The results have led to a further understanding of electron transfer in ds-DNA, and several models of ET are proposed.
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