Publications [#231933] of David N. Beratan

Journal Articles
  1. Lin, Z; Lawrence, CM; Xiao, D; Kireev, VV; Skourtis, SS; Sessler, JL; Beratan, DN; Rubtsov, IV, Modulating unimolecular charge transfer by exciting bridge vibrations., Journal of the American Chemical Society, vol. 131 no. 50 (December, 2009), pp. 18060-18062(Highlighted in Chemical and & Engineering News 12/7/09; Nature Chemistry 12/11/09.) [19928957], [doi] .

    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.