P120
Theoretical analysis of the influence of stochastic gating on the
transient effect in fluorescence quenching by electron transfer
T. Bandyopadhyay, K. Seki, M. Tachiya
NIMC
The asymmetry in the fluorescence quenching kinetics caused by
fluorophore gated vis-a-vis quencher gated diffusion-influenced
electron transfer reaction is presented. A Smoluchowski-type theory for
stochastically gated diffusion-influenced reactions is used. The
theoretical results including the role of liquid structure are compared
with those obtained through a molecular dynamics simulation protocol.
The competitive interplay between the reaction sink strength, diffusion
and the gating rates on the reaction kinetics are studied. A simple
method, based on the distribution of electron transfer distance of ungated
reactions, is proposed to help delineate the features of such
competitive interplay on the asymmetry of the kinetics.
Return to Program.