期刊
JOURNAL OF CHEMICAL PHYSICS
卷 140, 期 20, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4874643
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资金
- EPSRC UK National Service for Computational Chemistry Software (NSCCS)
- EPSRC [EP/D054508/1, EP/L005646/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/L005646/1, EP/D054508/1] Funding Source: researchfish
Using a combination of photoelectron spectroscopy measurements and quantum chemistry calculations, we have identified competing electron emission processes that contribute to the 350-315 nm photoelectron spectra of the deprotonated green fluorescent protein chromophore anion, p-hydroxybenzylidene-2,3-dimethylimidazolinone. As well as direct electron detachment from S-0, we observe resonant excitation of the 2(1)pi pi* state of the anion followed by autodetachment. The experimental photoelectron spectra are found to be significantly broader than photoelectron spectrum calculated using the Franck-Condon method and we attribute this to rapid (similar to 10 fs) vibrational decoherence, or intramolecular vibrational energy redistribution, within the neutral radical. (C) 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
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