title: Detecting electronic coherence in excited-state electron transfer in fluorinated benzenes.
abstract: Photoinduced electron transfer (ET) in heavily fluorinated benzenes in solution has been studied with broadband transient absorption spectroscopy. Spectrally resolved kinetics exhibit oscillations with amplitude up to 70% of the signal. The oscillation frequency is specific for each probe; in addition, for pentafluorobenzene it markedly depends on solvent, being 86 cm(-1) in hexane and 94 cm(-1) in acetonitrile. We argue that the observed behavior is not related to vibrational coherences, but originate from coherent electronic motion between an optically excited and an ET state.
authors.affiliation: Department of Chemistry, Humboldt University, Brook-Taylor Strasse 2, D-12489 Berlin, Germany. skovale@chemie.hu-berlin.de
authors.forename: S A
authors.initials: SA
authors.lastname: Kovalenko
authors.forename: A L
authors.initials: AL
authors.lastname: Dobryakov
authors.forename: V
authors.initials: V
authors.lastname: Farztdinov