Communication: Autodetachment versus internal conversion from the S1 state of the isolated GFP chromophore anion | Zendy

Christopher W. West | Zendy; Alex S. Hudson | Zendy; Steven L. Cobb | Zendy; Jan R. R. Verlet | Zendy

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Communication: Autodetachment versus internal conversion from the S1 state of the isolated GFP chromophore anion

Author(s) -

Christopher W. West,

Alex S. Hudson,

Steven L. Cobb,

Jan R. R. Verlet

Publication year - 2013

Publication title -

the journal of chemical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.071

H-Index - 357

eISSN - 1089-7690

pISSN - 0021-9606

DOI - 10.1063/1.4819078

Subject(s) - chromophore , excited state , ion , green fluorescent protein , photochemistry , internal conversion , fluorescence , chemistry , spectroscopy , atomic physics , x ray photoelectron spectroscopy , physics , spectral line , nuclear magnetic resonance , optics , biochemistry , organic chemistry , quantum mechanics , astronomy , gene

The anionic form of p-hydroxybenzylidene-2,3-dimethylimidazolinone (HBDI) has been extensively employed as a model of the chromophore of the green fluorescence protein. The bright S1 excited state HBDI− has a measured lifetime of 1.4 ps in the gas-phase and is dominated by two non-radiative decay mechanisms: internal conversion and autodetachment into the neutral continuum. Here, time-resolved photoelectron spectroscopy has been used to determine the yields of these two channels from which the lifetime for autodetachment was found to be ∼30 ps

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