Modulating Unimolecular Charge Transfer by Exciting Bridge Vibrations
Chemical Processes, Anthracenes
Chemical processes, Dimethylaniline, Anthracene
Chemical Engineering | Chemistry
Ultrafast UV-vibrational spectroscopy was used to investigate how vibrational excitation of the bridge changes photoinduced electron transfer between donor (dimethylaniline) and acceptor (anthracene) moieties bridged by a guanosine−cytidine base pair (GC). The charge-separated (CS) state yield is found to be lowered by high-frequency bridge mode excitation. The effect is linked to a dynamic modulation of the donor−acceptor coupling interaction by weakening of H-bonding and/or by disruption of the bridging base-pair planarity.
Lin, Zhiwei; Lawrence, Candace M.; Xiao, Dequan; Kireev, Victor; Skourtis, Spiros S.; Sessler, Jonathan L.; Beratan, David N.; and Rubtsov, Igor V., "Modulating Unimolecular Charge Transfer by Exciting Bridge Vibrations" (2009). Chemistry and Chemical Engineering Faculty Publications. 19.
Lin, Z., Lawrence, C. M., Xiao, D., Kireev, V. V., Skourtis, S. S., Sessler, J. L., … Rubtsov, I. V. (2009). Modulating Unimolecular Charge Transfer by Exciting Bridge Vibrations. Journal of the American Chemical Society, 131(50), 18060–18062. http://doi.org/10.1021/ja907041t