title: Ion binding or condensation to polyelectrolytes? A detailed comparison, on the example of sodium heparinate.
abstract: A modified Poisson-Boltzmann treatment is applied to aqueous solutions of sodium heparinate, in the presence of added salts (NaCl, LiCl, KCl, CaCl2). The results show that 23Na-NMR line widths for the counterions are determined nearly exclusively by Na+ in the immediate vicinity of the linear polyelectrolyte. Hence, two-state treatments, despite their crude character, can reproduce such experimental data rather well.
authors.affiliation: Institut de Chimie Organique et de Biochimie, Université de Liège, Sart-Tilman par 4000 Liège, Belgium.
authors.forename: A
authors.initials: A
authors.lastname: Delville
authors.forename: P
authors.initials: P
authors.lastname: Laszlo