Department of Physics and Astronomy, Aarhus University, Denmark.
Phys Rev Lett. 2012 Sep 21;109(12):128101. doi: 10.1103/PhysRevLett.109.128101. Epub 2012 Sep 18.
Photoelectron spectra of the deprotonated green fluorescent protein chromophore have been measured in the gas phase at several wavelengths within and beyond the S(0)-S(1) photoabsorption band of the molecule. The vertical detachment energy (VDE) was determined to be 2.68 ± 0.1 eV. The data show that the first electronically excited state is bound in the Franck-Condon region, and that electron emission proceeds through an indirect (resonant) electron-emission channel within the corresponding absorption band.
已在气相中测量了去质子化的绿色荧光蛋白发色团的光电子能谱，其测量波长位于分子的 S(0)-S(1)光吸收带内和之外的几个波长处。垂直离化能 (VDE) 被确定为 2.68 ± 0.1 eV。这些数据表明，第一激发态是在 Franck-Condon 区域束缚的，并且电子发射是通过相应吸收带内的间接（共振）电子发射通道进行的。
