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Torsional motion of the chromophore catechol following the absorption of ultraviolet light
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Young, Jamie D., Staniforth, Michael, Paterson, M. J. and Stavros, Vasilios G. (2015) Torsional motion of the chromophore catechol following the absorption of ultraviolet light. Physical Review Letters, 114 (23). 233001 . doi:10.1103/PhysRevLett.114.233001 ISSN 0031-9007.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.114.233001
Abstract
The ability to probe energy flow in molecules, following the absorption of ultraviolet light, is crucial to unraveling photophysical phenomena. Here we excite a coherent superposition of vibrational states in the first excited electronic state (S1) in catechol, resulting in a vibrational wave packet. The observed quantum beats, assigned to superpositions of the low-frequency, and strongly mixed, O–H torsional mode τ2, elegantly demonstrate how changes in geometry upon photoionization from the S1 state to the ground state of the cation (D0) enables one to probe energy flow at the very early stages of photoexcitation in this biological chromophore.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QD Chemistry | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
| Library of Congress Subject Headings (LCSH): | Catechol, Photoionization | ||||
| Journal or Publication Title: | Physical Review Letters | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | 8 June 2015 | ||||
| Dates: |
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| Volume: | 114 | ||||
| Number: | 23 | ||||
| Article Number: | 233001 | ||||
| DOI: | 10.1103/PhysRevLett.114.233001 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||
| Date of first compliant deposit: | 23 June 2016 | ||||
| Date of first compliant Open Access: | 23 June 2016 | ||||
| Funder: | University of Warwick, Engineering and Physical Sciences Research Council (EPSRC), Seventh Framework Programme (European Commission) (FP7), Royal Society (Great Britain) | ||||
| Grant number: | 258990 (FP7), EP/J007153 (EPSRC) |
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