Broughton, Joseph J;
Patra, Sarbani;
Parkes, Michael A;
Worth, Graham A;
Fielding, Helen H;
(2024)
A multiphoton ionisation photoelectron imaging
study of thiophene.
Physical Chemistry Chemical Physics
10.1039/d4cp02504k.
(In press).
Preview |
Text
D4CP02504K.pdf - Published Version Download (1MB) | Preview |
Abstract
Thiophene is a prototype for the excited state photophysics that lies at the heart of many technologies within the field of organic electronics. Here, we report a multiphoton ionisation photoelectron imaging study of gas-phase thiophene using a range of photon energies to excite transitions from the ground electronic state to the first two electronically excited singlet states, from the onset of absorption to the absorption maximum. Analysis of the photoelectron spectra and angular distributions reveal features arising from direct photoionisation from the ground electronic state, and resonance-enhanced photoionisation via the electronically excited singlet states. The first two ionisation energies from the ground electronic state were confirmed to be 8.8 eV (adiabatic) and 9.6 eV (vertical). The ionisation energies from the first two electronically excited singlet states were found to be 3.7 eV (adiabatic) and 4.4 eV (vertical).
| Type: | Article |
|---|---|
| Title: | A multiphoton ionisation photoelectron imaging study of thiophene |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/d4cp02504k |
| Publisher version: | http://dx.doi.org/10.1039/d4cp02504k |
| Language: | English |
| Additional information: | This article is licensed under a Creative Commons Attribution 3.0 Unported Licence, https://creativecommons.org/licenses/by/3.0/. |
| 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/10197751 |
Archive Staff Only
 |
View Item |
