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Transient and Enduring Electronic Resonances Drive Coherent Long Distance Charge Transport in Molecular Wires.

08:00 EDT 2nd April 2019 | BioPortfolio

Summary of "Transient and Enduring Electronic Resonances Drive Coherent Long Distance Charge Transport in Molecular Wires."

It is shown that the yields of oxidative damage observed in double stranded DNA oligomers consisting of two guanines separated by adenine-thymine (
A:
T)n bridges of various lengths are reliably accounted for by a multi-step mechanism, in which transient and non-transient electronic resonances induce charge transport and solvent relaxation stabilizes the hole transfer products. The proposed multi-step mechanism leads to results in excellent agreement with the observed yield ratios both for the short and the long distance regime; the almost distance independence of yield ratios for longer bridges (n > 3) is the consequence of the significant decrease of the electronic levels of the bridge, which, as the bridge length increases, become quasi-degenerate with those of the acceptor and donor groups (enduring resonance). These results provide significant guidelines for the design of novel DNA sequences to be employed in organic electronics.

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This article was published in the following journal.

Name: The journal of physical chemistry letters
ISSN: 1948-7185
Pages:

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