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ToolsDezalay, Jordan, Ashworth, Eleanor K., Fulker, Jack Edward, Stockett, Mark H., Noble, Jennifer Anna and Bull, James N. (2025) Cryogenic action spectroscopy of the cyan fluorescent protein chromophore anion. Physical Chemistry Chemical Physics. ISSN 1463-9076
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Abstract
The visible absorption band at $T\approx 20$\,K and competition between electron detachment and dissociation in the cyan fluorescent protein chromophore anion are reported. The spectrum is complicated by the presence of rotamers. The adiabatic detachment energy for the lowest energy rotamer (\emph{Z}1) is $19\,531\pm 40$\,cm$^{-1}$, with the vertical S$_{1}\leftarrow$S$_{0}$ transition energy determined at $23\,734\pm 20$\,cm$^{-1}$. The propensity for internal conversion followed by dissociation is low ($<$10\%) compared with autodetachment as the S$_{1}\leftarrow$S$_{0}$ absorption band is situated in the detachment continuum and is classified as a shape resonance.
| Item Type: | Article |
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| Additional Information: | Data availability: The data that support the findings of this study are available from the corresponding author upon reasonable request. Acknowledgements: This work was funded by an EPSRC New Investigator Award (EP/W018691/1 to JNB) and the Swedish Foundation for International Cooperation in Research and Higher Education (STINT) Grant for Internationalisation programme (PT2017-7328 to MHS and JNB). EKA thanks the University of East Anglia for a doctoral studentship. |
| Faculty \ School: | Faculty of Science Faculty of Science > School of Chemistry, Pharmacy and Pharmacology |
| UEA Research Groups: | Faculty of Science > Research Groups > Centre for Photonics and Quantum Science Faculty of Science > Research Groups > Chemistry of Light and Energy |
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| Depositing User: | LivePure Connector |
| Date Deposited: | 17 Jul 2025 10:35 |
| Last Modified: | 17 Jul 2025 10:35 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/99950 |
| DOI: | 10.1039/D5CP02520F |
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