Photodissociation Dynamics of Acetone in the Gas Phase and in Solution Studied by Transient Absorption and Femtosecond Stimulated Raman Spectroscopy

摘要

Photodissociation dynamics of acetone was investigated for the first time in the gas phase and also in solution by transient absorption and femtosecond stimulated Raman spectrscopy. In the gas phase, a Rydberg state with a decay time of 350 fs, which in solution decays at – 100 fs. In solution. we also found evidence for solvated electron generation. Vibrational information about the photodissociation dynamics was investigated in the gas phase by femtosecond stimulated Raman spectroscopy. Vibrational peaks for the nR state were observed at 1835 cm-1 for C=0 stretching and at 3100 cm-1 for C-H stretching.