R. Laenen et C. Rauscher, Spectral hole burning and evidence for vibrational energy migration of H-bonded molecules observed with transient infrared spectroscopy, LASER CHEM, 19(1-4), 1999, pp. 389-392
Via intense ps-excitation of the OH-stretching vibration of ethanol diluted
in CCl4 we succeed in spectral hole burning within the inhomogeneously bro
adened oligomer band. The lifetime of the transient hole and the v = 1-leve
l of the OH-stetch of associated ethanol molecules are determined to be abo
ut 1.2 and 1.7 ps, respectively. Further dynamical features are discussed w
hich give evidence for energy migration within the H-bonded ethanol chains
and subsequent breaking of the oligomers into shorter fragments.