Vibrational Relaxation and Hydrogen-Bond Dynamics of HDO:H2O

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 obt...

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Bibliographic Details
Published in:The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 2001-05, Vol.105 (19), p.4622-4626
Main Authors: Kropman, Michel F, Nienhuys, Han-Kwang, Woutersen, Sander, Bakker, Huib J
Format: Article
Language:English
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Summary: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.
ISSN:1089-5639
1520-5215
DOI:10.1021/jp010057n