Figure 5.

Pump–probe spectra of pHP DEP (24, X = diethyl phosphate) in 87% aqueous CH₃CN. The sample was excited with a pulse from a Ti/Sa–NOPA laser system (266 nm, 150 fs pulse width, pulse energy 1 μJ). The inset shows the species spectra of ³pHP DEP and biradical ³28 that were determined by global analysis of the spectra taken with delays of 10–1800 ps using a biexponential fit. Reprinted with permission from ref (85d). Copyright 2008 American Chemical Society.