Photophysical primary processes of electron donor—acceptor complex. 1. s-tetracyanobenzene—toluene complex at 77°K

Abstract

The absorption and emission spectra of fluorescent and phosphorescent states of the s-tetracyanobenzene—toluene complex, as well as the rise and decay curves of both states were observed at 77°K. The electronic structure of the fluorescent state is strongly polar, from which ionic dissociation occurs. The phosphorescent state, which is less polar, is formed from the excited Franck—Condon state of the complex, not through the fluorescent state.