Horke, D. A. and Chatterley, A. S. and Bull, J. N. and Verlet, J. R. R. (2015) 'Time-resolved photodetachment anisotropy : gas-phase rotational and vibrational dynamics of the fluorescein anion.', Journal of physical chemistry letters., 6 (1). pp. 189-194.
Abstract
The photoelectron signal of the singly deprotonated fluorescein anion is found to be highly dependent on the relative polarization between pump and probe pulses, and time-resolved photodetachment anisotropy (TR-PA) is developed as a probe of the rotational dynamics of the chromophore. The total photoelectron signal shows both rotational and vibrational wavepacket dynamics, and we demonstrate how TR-PA can readily disentangle these dynamical processes. TR-PA in fluorescein presents specific opportunities for its development as a probe for rotational dynamics in large biomolecules as fluorescein derivatives are commonly incorporated in complex biomolecules and have been used extensively in time-resolved fluorescence anisotropy measurements, to which TR-PA is a gas-phase analogue.
| Item Type: | Article |
|---|---|
| Keywords: | Gas-phase anions, Ultrafast dynamics, Electron detachment, Anisotropy, Photoelectron spectroscopy, Fluorescein, Wavepacket dynamics, Rotational anisotropy. |
| Full text: | (AM) Accepted Manuscript Download PDF (582Kb) |
| Status: | Peer-reviewed |
| Publisher Web site: | http://dx.doi.org/10.1021/jz5022526 |
| 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 © 2014 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/jz5022526. |
| Date accepted: | No date available |
| Date deposited: | 25 February 2015 |
| Date of first online publication: | January 2015 |
| Date first made open access: | No date available |
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