Kirkby, OM;
Parkes, MA;
Neville, SP;
Worth, GA;
Fielding, HH;
(2017)
Non-radiative relaxation dynamics of pyrrole following excitation in the range 249.5-200nm.
Chemical Physics Letters
, 683
pp. 179-185.
10.1016/j.cplett.2017.04.035.
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Abstract
The non-radiative relaxation dynamics of pyrrole have been investigated using time-resolved photoelectron spectroscopy and quantum dynamics simulations. Following excitation of the A2(11πσ*) state, we observe population flow out of the Franck-Condon region on a ≲50 fs timescale. Following excitation of the B2(21ππ*) state, we observe population being transferred to the A2(11πσ*) state on a <50. fs timescale and subsequently out of the Franck-Condon region, also on a <50. fs timescale. Quantum dynamics calculations suggest that population is transferred from the B2(21ππ*) state through the A2(1π3pz) state to the B1(21πσ*) state before being transferred to the A2(11πσ*) state.
| Type: | Article |
|---|---|
| Title: | Non-radiative relaxation dynamics of pyrrole following excitation in the range 249.5-200nm |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.cplett.2017.04.035 |
| Publisher version: | https://doi.org/10.1016/j.cplett.2017.04.035 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Time-resolved photoelectron spectroscopy; Pyrrole; Ultrafast internal conversion; Quantum dynamics simulation; Electronic relaxation |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1557903 |
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