Ultrafast dynamics through conical intersections and intramolecular vibrational energy redistribution in styrene
Ultrafast dynamics through conical intersections and intramolecular vibrational energy redistribution in styrene
We report a femtosecond time-resolved photoelectron spectroscopy (TRPES) investigation of internal conversion in the first two excited singlet electronic states of styrene. We find that radiationless decay through an S1/S0 conical intersection occurs on a timescale of 4 ps following direct excitation to S1 with 0.6 eV excess energy, but that the same process is significantly slower (20 ps) if it follows internal conversion from S2 to S1 after excitation to S2 with 0.3 eV excess energy (0.9 eV excess energy in S1).
15751-15759
Nunn, A.D.G.
032e46b7-b12f-4b9a-9f54-2eb86b786c7e
Minns, R.S.
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Spesyvtsev, R.
be587234-e5cd-4c46-848c-6e93a1024ea0
Bearpark, M.J.
3edd1d3c-6e3b-4c97-9e7b-5b5f3f6bed13
Robb, M.A.
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Fielding, H.H.
02d57d59-c588-4c85-98de-cc74e7325649
10 November 2010
Nunn, A.D.G.
032e46b7-b12f-4b9a-9f54-2eb86b786c7e
Minns, R.S.
85280db4-c5a6-4a4c-82fe-75693c6a6045
Spesyvtsev, R.
be587234-e5cd-4c46-848c-6e93a1024ea0
Bearpark, M.J.
3edd1d3c-6e3b-4c97-9e7b-5b5f3f6bed13
Robb, M.A.
7d570ea9-a153-4844-bfee-2a8d6b26790d
Fielding, H.H.
02d57d59-c588-4c85-98de-cc74e7325649
Nunn, A.D.G., Minns, R.S., Spesyvtsev, R., Bearpark, M.J., Robb, M.A. and Fielding, H.H.
(2010)
Ultrafast dynamics through conical intersections and intramolecular vibrational energy redistribution in styrene.
Physical Chemistry Chemical Physics, 12 (48), .
(doi:10.1039/C0CP01723J).
Abstract
We report a femtosecond time-resolved photoelectron spectroscopy (TRPES) investigation of internal conversion in the first two excited singlet electronic states of styrene. We find that radiationless decay through an S1/S0 conical intersection occurs on a timescale of 4 ps following direct excitation to S1 with 0.6 eV excess energy, but that the same process is significantly slower (20 ps) if it follows internal conversion from S2 to S1 after excitation to S2 with 0.3 eV excess energy (0.9 eV excess energy in S1).
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Published date: 10 November 2010
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Times Cited: 1
Organisations:
Chemistry
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Local EPrints ID: 336629
URI: http://eprints.soton.ac.uk/id/eprint/336629
ISSN: 1463-9076
PURE UUID: b8c23c08-223b-49c2-b363-9cbd2f46ec1d
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Date deposited: 02 Apr 2012 11:31
Last modified: 15 Mar 2024 03:40
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Author:
A.D.G. Nunn
Author:
R. Spesyvtsev
Author:
M.J. Bearpark
Author:
M.A. Robb
Author:
H.H. Fielding
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