[Boundary potentials of lipid membranes in the presence of 1-anilino-8-naphthalene sulfonate ions].
Boundary and zeta potentials induced by ANS adsorption in dioleoyl lecithin membranes were measured using three methods, namely: inner membrane field compensation, measurements of carrier-mediated membrane conductance and microelectrophoresis. The changes of boundary potentials due to ANS adsorption recorded by the first two methods were the same and did not depend on the ionic strength of aqueous solutions. On the contrary, the values of zeta potentials were smaller as compared with the boundary potentials, and depended on the ionic strength. The results obtained were described satisfactorily by means of combination of Henry, Gouy-Chapman and Boltzmann equations, when ANS ions were assumed to adsorb at a plane shifted towards the hydrophobic region of the membrane.
D000817:Anilino Naphthalenesulfonates / Q000494:pharmacology*; D008051:Lipid Bilayers; D008564:Membrane Potentials / Q000187:drug effects; D008954:Models, Biological
D000817:Anilino Naphthalenesulfonates; D008051:Lipid Bilayers
Granichnye potentsialy na lipidnykh membranakh v prisutstvii ionov 1-anilino-8-naftalen sul'fonata.