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Repulsion between inorganic particles inserted within surfactant bilayers.

Authors
  • Constantin, Doru
  • Pansu, Brigitte
  • Impéror, Marianne
  • Davidson, Patrick
  • Ribot, François
Type
Published Article
Journal
Physical review letters
Publication Date
Aug 29, 2008
Volume
101
Issue
9
Pages
98101–98101
Identifiers
PMID: 18851663
Source
Medline
License
Unknown

Abstract

We study by synchrotron small-angle x-ray scattering highly aligned lamellar phases of a zwitterionic surfactant, doped with monodisperse and spherical hydrophobic inorganic particles as a function of particle concentration. Analysis of the structure factor of the two-dimensional fluid formed by the particles in the plane of the bilayer gives access to their membrane-mediated interaction, which is repulsive, with a contact value of about 4kBT and a range of 14 angstroms. Systematic application of this technique should lead to a better understanding of the interaction between membrane inclusions.

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