Abstract
The charge recombination rate in DNA hairpins is investigated. The distance dependence for the charge recombination rate between stilbene donor (Sd + ) and stilbene acceptor (Sa−) linkers separated by an AT bridge has a double exponential form. We suggest that this dependence is associated with two tunneling channels distinguished by the presence or absence of the Cl− counterion bound to Sd + . Experiment-based estimates of counterion binding parameters agree within reasonable expectations. A control experiment replacing the Cl− ion with other halide ions is suggested. Counterion substitution allows modification of the charge recombination rate in either direction by orders of magnitude.
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Blaustein, G.S., Lewis, F.D., Burin, A.L., Shrestha, R. (2009). The Kinetics of Charge Recombination in DNA Hairpins Controlled by Counterions. In: Allen, G., Nabrzyski, J., Seidel, E., van Albada, G.D., Dongarra, J., Sloot, P.M.A. (eds) Computational Science – ICCS 2009. ICCS 2009. Lecture Notes in Computer Science, vol 5545. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-01973-9_21
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DOI: https://doi.org/10.1007/978-3-642-01973-9_21
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