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Direct versus indirect H atom elimination from photoexcited phenol molecules
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Iqbal, Azhar, Pegg, Lara-Jane and Stavros, Vasilios G.. (2008) Direct versus indirect H atom elimination from photoexcited phenol molecules. Journal of Physical Chemistry A, Vol.112 (No.39). pp. 9531-9534. ISSN 1089-5639
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Official URL: http://dx.doi.org/10.1021/jp802155b
Abstract
The active role of the optically dark pi sigma* state, following UV absorption, has been implicated in the photochemistry of a number of biomolecules. This work focuses on the role of the pi sigma* state in the photochemistry of phenol upon excitation at 200 nm. By probing the neutral hydrogen following UV excitation, we show that hydrogen elimination along the dissociative pi sigma* potential energy surface occurs within 103 30 fs, indicating efficient coupling at the S-1/S-2 and S-0/S-2 conical intersections, with no identifiable role of statistical unimolecular decay of vibronically excited (SO) phenol in the timeframe of our measurements.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QD Chemistry Q Science > QP Physiology |
| Divisions: | Faculty of Science > Chemistry |
| Library of Congress Subject Headings (LCSH): | Elimination reaction, Photochemistry, Phenol |
| Journal or Publication Title: | Journal of Physical Chemistry A |
| Publisher: | American Chemical Society |
| ISSN: | 1089-5639 |
| Date: | 2 October 2008 |
| Volume: | Vol.112 |
| Number: | No.39 |
| Number of Pages: | 4 |
| Page Range: | pp. 9531-9534 |
| Identification Number: | 10.1021/jp802155b |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Funder: | Royal Society (Great Britain), Engineering and Physical Sciences Research Council (EPSRC), University of Warwick |
| Grant number: | EP/E011187 (EPSRC) |
| URI: | http://wrap.warwick.ac.uk/id/eprint/29297 |
Data sourced from Thomson Reuters' Web of Knowledge
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