Effect of 2H2O/H2O replacement on the dielectric structure of lipid bilayer membranes

Dielectric dispersion measurements were made on planar egg phosphatidylcholine and egg phosphatidylcholine/cholesterol bilayer membranes in H2O and 2H2O electrolyte solutions. The properties of the dielectrically distinct substructural layers of these membranes, which can be characterised by this technique, were found to be insensitive to replacement of H2O by 2H2O.