title: pH dependence of electrostatic interaction between ion-penetrable membranes.
abstract: A theory on the electrostatic repulsion between ion-penetrable membranes proposed previously by us is extended by taking into account the degree of dissociation of the membrane-fixed ionizable groups. A system of equations which determines the pH dependence of the membrane interaction is presented. The density of membrane-fixed charges is consistently determined as a function of the electric potential so that both the membrane-fixed charge density and the potential are not constant but functions of the membrane separation. The pH at the surface of interacting membranes is also calculated as a function of the membrane separation.
authors.affiliation: Faculty of Pharmaceutical Sciences, Science University of Tokyo, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Ohshima
authors.forename: T
authors.initials: T
authors.lastname: Kondo
mesh_terms: D006863:Hydrogen-Ion Concentration; D007477:Ions; D008433:Mathematics; D008564:Membrane Potentials; D008566:Membranes / Q000502:physiology*; D008962:Models, Theoretical
chemical_list: D007477:Ions