Observation of immobilized water molecules around hydrophobic groups

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...

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Bibliographic Details
Published in:	Physical review letters Vol. 99; no. 14; p. 148301
Main Authors:	Rezus, Y L A, Bakker, H J
Format:	Journal Article
Language:	English
Published:	United States 05-10-2007
Subjects:	Acetamides - chemistry Hydrogen Bonding Hydrophobic and Hydrophilic Interactions Methylamines - chemistry Methylurea Compounds - chemistry Proline - chemistry Solutions - chemistry Water - chemistry
Online Access:	Get full text
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Summary:	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.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0031-9007 1079-7114
DOI:	10.1103/physrevlett.99.148301