title: Communication: Autodetachment versus internal conversion from the S1 state of the isolated GFP chromophore anion.
abstract: 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.
authors: Department of Chemistry, University of Durham, Durham DH1 3LE, United Kingdom.
authors: Christopher W
authors: CW
authors: West
authors: Alex S
authors: AS
authors: Hudson
authors: Steven L
authors: SL
authors: Cobb
authors: Jan R R
authors: JR
authors: Verlet
mesh_terms: D000838:Anions / Q000737:chemistry; D001593:Benzyl Compounds / Q000737:chemistry*; D049452:Green Fluorescent Proteins / Q000737:chemistry*; D048288:Imidazolines / Q000737:chemistry*; D011789:Quantum Theory
chemical_list: D000838:Anions; D001593:Benzyl Compounds; D048288:Imidazolines; C533767:p-hydroxybenzylidenedimethylimidazolinone; D049452:Green Fluorescent Proteins