Issue 48, 2010
From the journal:

Physical Chemistry Chemical Physics

Ultrafast dynamics through conical intersections and intramolecular vibrational energy redistribution in styrene†

A. D. G. Nunn,a   R. S. Minns,a   R. Spesyvtsev,a   M. J. Bearpark,b   M. A. Robbb  and  H. H. Fielding*a  

* Corresponding authors

a Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
E-mail: h.h.fielding@ucl.ac.uk

b Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, UK

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).

Graphical abstract: Ultrafast dynamics through conical intersections and intramolecular vibrational energy redistribution in styrene

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Article information

DOI
https://doi.org/10.1039/C0CP01723J
Article type
Paper
Submitted
05 Sep 2010
Accepted
12 Oct 2010
First published
10 Nov 2010

Phys. Chem. Chem. Phys., 2010,12, 15751-15759

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Ultrafast dynamics through conical intersections and intramolecular vibrational energy redistribution in styrene

A. D. G. Nunn, R. S. Minns, R. Spesyvtsev, M. J. Bearpark, M. A. Robb and H. H. Fielding, Phys. Chem. Chem. Phys., 2010, 12, 15751 DOI: 10.1039/C0CP01723J

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