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Femtosecond photoelectron imaging of aligned polyanions : probing molecular dynamics through the electron−anion Coulomb repulsion.

Horke, D.A. and Chatterley, A.S. and Verlet, J.R.R. (2012) 'Femtosecond photoelectron imaging of aligned polyanions : probing molecular dynamics through the electron−anion Coulomb repulsion.', Journal of physical chemistry letters., 3 (7). pp. 834-838.

Abstract

The first time-resolved photoelectron imaging study of a polyanion is presented. Using the alignment induced through resonance excitation, the photoelectron angular distributions can be qualitatively understood in terms of the position of localized excess charges on the molecular skeleton, which influence the photoemission dynamics. Pump–probe experiments are used to demonstrate that the photoelectron angular distribution is also sensitive to molecular dynamics. This is shown here for the rotational dynamics of a polyanion, in which the photoelectron anisotropy tracks the rotational coherence as it dephases. The methodology can in principle be applied to general molecular dynamics in large polyanions, providing a new route to studying ultrafast structural dynamics in complex gas-phase systems.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1021/jz3000933
Publisher statement:This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/jz3000933.
Date accepted:06 March 2012
Date deposited:05 February 2016
Date of first online publication:April 2012
Date first made open access:No date available

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