title: Evidence for diffusion-controlled electron transfer in exciplex formation reactions. Medium reorganisation stimulated by strong electronic coupling.
abstract: Diffusion-controlled rates of formation were found from the temperature dependence of apparent quenching rate constants for exciplexes, when the driving force of excited-state electron transfer -0.1 < deltaG(ET)* < +0.1 eV. This is inconsistent with the conventional mechanism of electron-transfer reactions, involving preliminary reorganisation of the medium and reactants, and provides strong support for the mechanism of medium reorganisation stimulated by strong electronic coupling of locally excited and charge-transfer states.
authors.affiliation: Department of Chemistry, Moscow M. V. Lomonosov University, 119992 Moscow, Russia. kuzmin@photo.chem.msu.ru
authors.forename: Michael G
authors.initials: MG
authors.lastname: Kuzmin
authors.forename: Irina V
authors.initials: IV
authors.lastname: Soboleva
authors.forename: Elena V
authors.initials: EV
authors.lastname: Dolotova
authors.forename: Denis N
authors.initials: DN
authors.lastname: Dogadkin