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arXiv · 0807.3048

Structure and Depletion at Fluoro- and Hydro-carbon/Water Liquid/Liquid Interfaces

Kaoru Kashimoto·Jaesung Yoon·Binyang Hou·Chiu-hao Chen·Binhua Lin·Makoto Aratono·Takanori Takiue·Mark L. Schlossman
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Abstract

The results of x-ray reflectivity studies of two oil/water (liquid/liquid) interfaces are inconsistent with recent predictions of the presence of a vapor-like depletion region at hydrophobic/aqueous interfaces. One of the oils, perfluorohexane, is a fluorocarbon whose super-hydrophobic interface with water provides a stringent test for the presence of a depletion layer. The other oil, heptane, is a hydrocarbon and, therefore, is more relevant to the study of biomolecular hydrophobicity. These results are consistent with the sub-angstrom proximity of water to soft hydrophobic materials.

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Kaoru Kashimoto, Jaesung Yoon, Binyang Hou, Chiu-hao Chen, Binhua Lin, Makoto Aratono, Takanori Takiue, Mark L. Schlossman. 2008-07-18. Structure and Depletion at Fluoro- and Hydro-carbon/Water Liquid/Liquid Interfaces. https://doi.org/10.1103/physrevlett.101.076102

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