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Competing ultrafast intersystem crossing and internal conversion in the "channel 3" region of benzene

Competing ultrafast intersystem crossing and internal conversion in the "channel 3" region of benzene
Competing ultrafast intersystem crossing and internal conversion in the "channel 3" region of benzene
We report new, detailed, femtosecond time-resolved photoelectron spectroscopy experiments and calculations investigating the competition between ultrafast internal conversion and ultrafast intersystem crossing in electronically and vibrationally excited benzene at the onset of “channel 3”. Using different probe energies to record the total photoelectron yield as a function of pump–probe delay we are able to confirm that S1, T1 and T2 electronic states are involved in the excited state dynamics. Time-resolved photoelectron spectroscopy measurements then allow us to unravel the evolution of the S1, T1 and T2 components of the excited state population and, together with complementary quantum chemistry and quantum dynamics calculations, support our earlier proposal that ultrafast intersystem crossing competes with internal conversion (Chem. Phys. Lett., 2009, 469, 43).



1463-9076
15607-15615
Minns, R.S.
85280db4-c5a6-4a4c-82fe-75693c6a6045
Parker, D.S.N.
59fa7b07-19ff-4bcc-b1be-5b5657c55295
Penfold, T.J.
f994ae0e-9ecf-4a78-a880-e3286fe30a38
Worth, G. .
522e223d-8cc7-4cec-a822-51dd1de51120
Fielding, H.H.
02d57d59-c588-4c85-98de-cc74e7325649
Minns, R.S.
85280db4-c5a6-4a4c-82fe-75693c6a6045
Parker, D.S.N.
59fa7b07-19ff-4bcc-b1be-5b5657c55295
Penfold, T.J.
f994ae0e-9ecf-4a78-a880-e3286fe30a38
Worth, G. .
522e223d-8cc7-4cec-a822-51dd1de51120
Fielding, H.H.
02d57d59-c588-4c85-98de-cc74e7325649

Minns, R.S., Parker, D.S.N., Penfold, T.J., Worth, G. . and Fielding, H.H. (2010) Competing ultrafast intersystem crossing and internal conversion in the "channel 3" region of benzene. Physical Chemistry Chemical Physics, 12 (48), 15607-15615. (doi:10.1039/C001671C).

Record type: Article

Abstract

We report new, detailed, femtosecond time-resolved photoelectron spectroscopy experiments and calculations investigating the competition between ultrafast internal conversion and ultrafast intersystem crossing in electronically and vibrationally excited benzene at the onset of “channel 3”. Using different probe energies to record the total photoelectron yield as a function of pump–probe delay we are able to confirm that S1, T1 and T2 electronic states are involved in the excited state dynamics. Time-resolved photoelectron spectroscopy measurements then allow us to unravel the evolution of the S1, T1 and T2 components of the excited state population and, together with complementary quantum chemistry and quantum dynamics calculations, support our earlier proposal that ultrafast intersystem crossing competes with internal conversion (Chem. Phys. Lett., 2009, 469, 43).



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e-pub ahead of print date: 8 June 2010
Published date: December 2010
Additional Information: Times Cited: 9
Organisations: Chemistry

Identifiers

Local EPrints ID: 336630
URI: http://eprints.soton.ac.uk/id/eprint/336630
ISSN: 1463-9076
PURE UUID: b7a80007-e5dc-46b8-ab28-29bddad3f9c3
ORCID for R.S. Minns: ORCID iD orcid.org/0000-0001-6775-2977

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Date deposited: 02 Apr 2012 12:44
Last modified: 26 Nov 2019 01:38

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