Overcharging of a macroion by an oppositely charged polyelectrolyte

Details Overcharging of a macroion by an oppositely charged polyelectrolyte Overcharging of a macroion by an oppositely charged polyelectrolyte

2000-05-18

arxiv.org/abs/cond-mat/0005304v6

Physica A, 293 (2001) 324-338

Physics

Condensed Matter

Soft Condensed Matter

Monte-Carlo simulation details added. Many corrections and references added. Accepted to Physica A

Scientific paper

10.1016/S0378-4371(01)00020-6

The 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 coil. 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%. This paper confirms that correlations are the universal mechanism of charge inversion.

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