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Issue 48, 2010
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Competing ultrafast intersystem crossing and internal conversion in the “channel 3” region of benzene

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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 pumpprobe 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).

Graphical abstract: Competing ultrafast intersystem crossing and internal conversion in the “channel 3” region of benzene

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Publication details

The article was received on 25 Jan 2010, accepted on 30 Apr 2010 and first published on 08 Jun 2010


Article type: Paper
DOI: 10.1039/C001671C
Phys. Chem. Chem. Phys., 2010,12, 15607-15615

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

    R. S. Minns, D. S. N. Parker, T. J. Penfold, G. A. Worth and H. H. Fielding, Phys. Chem. Chem. Phys., 2010, 12, 15607
    DOI: 10.1039/C001671C

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