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Excited state dynamics of the isolated green fluorescent protein chromophore anion following UV excitation.

West, C.W. and Bull, J.N. and Hudson, A.S. and Cobb, S.L. and Verlet, J.R.R. (2015) 'Excited state dynamics of the isolated green fluorescent protein chromophore anion following UV excitation.', Journal of physical chemistry B., 119 (10). pp. 3982-3987.

Abstract

A combined frequency-, angle-, and time-resolved photoelectron spectroscopy study is used to unravel the excited state dynamics following UV excitation of the isolated anionic chromophore of the green fluorescent protein (GFP). The optically bright S3 state, which is populated for hv > 3.7 eV, is shown to decay predominantly by internal conversion to the S2 state that in turn autodetaches to the neutral ground state. For hv > 4.1 eV, a new and favorable autodetachment channel from the S2 state becomes available, which leads to the formation of the neutral in an excited state. The results indicate that the UV excited state dynamics of the GFP chromophore involve a number of strongly coupled excited states.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1021/acs.jpcb.5b01432
Publisher statement:This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry B, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/acs.jpcb.5b01432.
Date accepted:11 February 2015
Date deposited:04 February 2016
Date of first online publication:March 2015
Date first made open access:No date available

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