X-ray Study of the Fluctuations and the Interfacial Structure of a Phospholipid Monolayer at an Alkane−Water Interface

The interfacial structure and fluctuations of a l-α-dipalmytoilphosphatidylcholine monolayer at the hexadecane/water interface were investigated using grazing-incidence surface scattering of X-ray synchrotron radiation. The interfacial structure of the densely packed monolayer is consistent with tha...

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Bibliographic Details
Published in:Langmuir 1998-12, Vol.14 (26), p.7327-7330
Main Authors: Fradin, C, Luzet, D, Braslau, A, Alba, M, Muller, F, Daillant, J, Petit, J. M, Rieutord, F
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
Gas-liquid interface and liquid-liquid interface
General and physical chemistry
Surface physical chemistry
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Summary:The interfacial structure and fluctuations of a l-α-dipalmytoilphosphatidylcholine monolayer at the hexadecane/water interface were investigated using grazing-incidence surface scattering of X-ray synchrotron radiation. The interfacial structure of the densely packed monolayer is consistent with that of a similar monolayer at the air/water interface. The fluctuations are shown to be limited by interfacial tension on length-scales down to in-plane wavelengths of a few tens of nanometers. This result at the alkane/water interface demonstrates the power of the X-ray grazing-incidence technique applied to the study of liquid−liquid interfaces.
ISSN:0743-7463
1520-5827
DOI:10.1021/la980829f