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.
|Original language||English (US)|
|Number of pages||15|
|Journal||Physica A: Statistical Mechanics and its Applications|
|State||Published - Apr 15 2001|
Bibliographical noteFunding Information:
The authors are grateful to A.Yu. Grosberg for many useful discussions and to S. Stoll and P. Chodanowski for the possibility to read their paper  before the publication. This work was supported by NSF DMR-9985985.
- Charge inversion
- Spherical macroion