title: Studies of impulsive vibrational influence on ultrafast electronic excitation transfer.
abstract: We investigated electronic energy-transfer dynamics in three model dimers within which coherent intramonomer nuclear motion had been induced by impulsive Raman excitation using an optimized, electronically preresonant control pulse. Calculations of the donor-survival probability, the ultrafast pump-probe signal, and the pump-probe difference signal are presented for dithia-anthracenophane and homodimers of 2-difluoromethylanthracene and 2-trifluoromethylanthracene. Survival probabilities and signals, along with phase-space analyses, elucidated the mechanisms, extent, and spectroscopic manifestations of external vibrational or torsional control over electronic excitation transfer.
authors.affiliation: Department of Chemistry and Oregon Center for Optics, University of Oregon, Eugene, Oregon 97403, USA.
authors.forename: Jason D
authors.initials: JD
authors.lastname: Biggs
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Cina