C. Silva et al., DETAILED INVESTIGATIONS OF THE PUMP-PROBE SPECTROSCOPY OF THE EQUILIBRATED SOLVATED ELECTRON IN ALCOHOLS, The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, 102(28), 1998, pp. 5701-5707
Pump-probe spectroscopy of the equilibrated solvated electron in metha
nol and ethanol has been studied with similar to 300 fs time resolutio
n. At low pump power the observed dynamics are assigned to s --> p exc
itation and subsequent relaxation of a localized solvated electron. In
contrast, at high pump power, two-photon absorption apparently produc
es mobile ''conduction band'' electrons, which are subsequently trappe
d and relax at a remote site from the initial equi:librated electron.
The two-photon excitation is also observed to induce an ultrafast prot
on-transfer reaction from the solvent.