Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 293, Issue 3-4, Pages 324-338Publisher
ELSEVIER
DOI: 10.1016/S0378-4371(01)00020-6
Keywords
charge inversion; polyelectrolyte; spherical macroion
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Complexation of a polyelectrolyte with an oppositely charged spherical macroion is studied for both salt-free and salty solutions. When a polyelectrolyte winds around the macroion, its turns repel each other and form an almost equidistant solenoid. It is shown that this repulsive correlations of turns lead to the charge inversion: more polyelectrolyte winds around the macroion than it is necessary to neutralize it. The charge inversion becomes stronger with increasing concentration of salt and can exceed 100%. Monte-Carlo simulation results agree with our analytical theory. (C) 2001 Elsevier Science B.V. All rights reserved.
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