Ultrafast vibrational energy transfer between surface and bulk water at the air-water interface

We report a femtosecond time-resolved study of water at the neat water-air interface. The O-H stretch vibrational lifetime of hydrogen-bonded interfacial water is measured using surface-specific 4th-order nonlinear optical spectroscopy with femtosecond infrared pulses. The vibrational lifetime in th...

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Bibliographic Details
Published in:Physical review letters 2007-03, Vol.98 (9), p.098302-098302, Article 098302
Main Authors: Smits, Marc, Ghosh, Avishek, Sterrer, Martin, Müller, Michiel, Bonn, Mischa
Format: Article
Language:English
Subjects:
Air
Deuterium - chemistry
Energy Transfer
Hydrogen Bonding
Spectrophotometry
Surface Properties
Water - chemistry
Water - metabolism
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Summary:We report a femtosecond time-resolved study of water at the neat water-air interface. The O-H stretch vibrational lifetime of hydrogen-bonded interfacial water is measured using surface-specific 4th-order nonlinear optical spectroscopy with femtosecond infrared pulses. The vibrational lifetime in the frequency range of 3200 to 3500 cm(-1) is found to closely resemble that of bulk water, indicating ultrafast exchange of vibrational energy between surface water molecules and those in the bulk.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.98.098302