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Issue 18, 2012
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Ultrafast vibrational energy relaxation of the water bridge

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Abstract

We report the energy relaxation of the OH stretch vibration of HDO molecules contained in an HDO:D2O water bridge using femtosecond mid-infrared pump–probe spectroscopy. We found that the vibrational lifetime is shorter (∼630 ± 50 fs) than for HDO molecules in bulk HDO:D2O (∼740 ± 40 fs). In contrast, the thermalization dynamics following the vibrational relaxation are much slower (∼1.5 ± 0.4 ps) than in bulk HDO:D2O (∼250 ± 90 fs). These differences in energy relaxation dynamics strongly indicate that the water bridge and bulk water differ on a molecular scale.

Graphical abstract: Ultrafast vibrational energy relaxation of the water bridge

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Publication details

The article was received on 20 Jul 2011, accepted on 16 Sep 2011 and first published on 13 Oct 2011


Article type: Paper
DOI: 10.1039/C1CP22358E
Citation: Phys. Chem. Chem. Phys., 2012,14, 6160-6164
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    Ultrafast vibrational energy relaxation of the water bridge

    L. Piatkowski, A. D. Wexler, E. C. Fuchs, H. Schoenmaker and H. J. Bakker, Phys. Chem. Chem. Phys., 2012, 14, 6160
    DOI: 10.1039/C1CP22358E

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