Time-resolved photoelectron imaging of the chloranil radical anion: ultrafast relaxation of electronically excited electron acceptor states

Horke, D.A.; Verlet, J.R.R.

doi:10.1039/c1cp22237f

Time-resolved photoelectron imaging of the chloranil radical anion: ultrafast relaxation of electronically excited electron acceptor states

Horke, D.A.; Verlet, J.R.R.

Authors

D.A. Horke

Professor Jan Verlet j.r.r.verlet@durham.ac.uk
Professor

Abstract

The spectroscopy and dynamics of near-threshold excited states of the isolated chloranil radical anion are investigated using photoelectron imaging. The photoelectron images taken at 480 nm clearly indicate resonance-enhanced photodetachment via a bound electronic excited state. Time-resolved photoelectron imaging reveals that the excited state rapidly decays on a timescale of 130 fs via internal conversion. The ultrafast relaxation dynamics of excited states near threshold are pertinent to common electron acceptor molecules based on the quinone moiety and may serve as doorway states that enable efficient electron transfer in the highly exergonic inverted regime, despite the presence of large free energy barriers.

Citation

Horke, D., & Verlet, J. (2011). Time-resolved photoelectron imaging of the chloranil radical anion: ultrafast relaxation of electronically excited electron acceptor states. Physical Chemistry Chemical Physics, 13(43), 19546-19552. https://doi.org/10.1039/c1cp22237f

Journal Article Type	Article
Acceptance Date	Sep 9, 2011
Publication Date	Nov 21, 2011
Deposit Date	Jan 30, 2012
Publicly Available Date	Feb 5, 2016
Journal	Physical Chemistry Chemical Physics
Print ISSN	1463-9076
Electronic ISSN	1463-9084
Publisher	Royal Society of Chemistry
Peer Reviewed	Peer Reviewed
Volume	13
Issue	43
Pages	19546-19552
DOI	https://doi.org/10.1039/c1cp22237f