title: Ionic strength and counterion repulsion as factors in the behavior of polyions in orienting electric fields.
abstract: The effect of counterion-counterion repulsion on the orientation of DNA, a polyion of high charge density is examined by electric-field orientation experiments. The charge species of the counterion and the ionic strength effect the orientation in a manner consistent with a theoretical treatment of the polarization of high charge density polyelectrolytes in terms of the effect of the applied field on the equilibrium distribution of condensed counterfoils on the polyion.
authors.affiliation: Laboratory of Chemical Physics, National Institute of Arthritis, Metabolism and Digestive Diseases, National Institutes of Health, Bethesda, Maryland 20014, U.S.A.
authors.forename: E
authors.initials: E
authors.lastname: Charney
authors.forename: K
authors.initials: K
authors.lastname: Yamaoka
authors.forename: G S
authors.initials: GS
authors.lastname: Manning