Long-range, photoinduced charge separation in solvent-free donor-bridge-acceptor molecules

Joshua Jortner*, M. Bixon, Bas Wegewijs, Jan W. Verhoeven, Rudolf P.H. Rettschnick

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

Charge separation in isolated supermolecules, consisting of an aniline or 4-methoxy aniline donor and a cyanonaphtalene acceptor connected by a semirigid bridge, is described in terms of irreversible sequential intramolecular relaxation involving electron transfer from an electronically excited molecular state and electrostatically driven folding. Sequential folding of the charge transfer state extended the energy range of this state, which is accessible by radiationless electron transfer. The analysis of the intramolecular electron transfer dynamics led to agreement between the distance scale for charge separation inferred from energetic and structural data and accounted for the excess energy dependence of the nuclear Franck-Condon vibrational overlap factors.

Original languageEnglish
Pages (from-to)451-455
Number of pages5
JournalChemical Physics Letters
Volume205
Issue number4-5
DOIs
StatePublished - 16 Apr 1993

Funding

FundersFunder number
Tel Aviv University
Bundesministerium für Forschung und Technologie317-4003.0328955A

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