Structure and depletion at fluorocarbon and hydrocarbon/water liquid/liquid interfaces

Kaoru Kashimoto, Jaesung Yoon, Binyang Hou, Chiu Hao Chen, Binhua Lin, Makoto Aratono, Takanori Takiue, Mark L. Schlossman

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


The results of x-ray reflectivity studies of two oil/water (liquid/liquid) interfaces are inconsistent with recent predictions of the presence of a vaporlike depletion region at hydrophobic/aqueous interfaces. One of the oils, perfluorohexane, is a fluorocarbon whose superhydrophobic 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 subangstrom proximity of water to soft hydrophobic materials.

Original languageEnglish
Article number076102
JournalPhysical review letters
Issue number7
Publication statusPublished - Aug 14 2008

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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