Journal
JOURNAL OF PHYSICAL CHEMISTRY A
Volume 105, Issue 19, Pages 4622-4626Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp010057n
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Femtosecond two-color mid-infrared pump-probe spectroscopy is used to study the vibrational relaxation and the hydrogen-bond dynamics of HDO dissolved in liquid H2O. By looking at the spectral dynamics of the OD stretch mode, direct information on the hydrogen-bond dynamics of the H2O solvent is obtained. By fitting the data using the Brownian oscillator model, we determined the vibrational lifetime of the OD stretch vibration and the hydrogen-bond length correlation time. The hydrogen-bond correlation time of H2O is significantly shorter than for D2O, found previously.
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