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Observation of Immobilized Water Molecules around Hydrophobic Groups

Y. L. A. Rezus and H. J. Bakker
Phys. Rev. Lett. 99, 148301 – Published 1 October 2007
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Abstract

We have used femtosecond midinfrared spectroscopy to study the orientational mobility of water molecules in the hydration shells of hydrophobic groups. Our results show that hydrophobic groups are surrounded by a number of water molecules that display much slower orientational dynamics than the bulk liquid and that are therefore effectively immobilized. It turns out that each methyl group is surrounded by four immobilized water OH groups.

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  • Received 1 May 2007

DOI:https://doi.org/10.1103/PhysRevLett.99.148301

©2007 American Physical Society

Authors & Affiliations

Y. L. A. Rezus* and H. J. Bakker

  • FOM–Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam, The Netherlands

  • *rezus@amolf.nl

See Also

Oil Holds Water Transfixed

Michael Schirber
Phys. Rev. Focus 20, 11 (2007)

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Issue

Vol. 99, Iss. 14 — 5 October 2007

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