Overcharging of a macroion by an oppositely charged polyelectrolyte

被引：118

作者：

Nguyen, TT ^{[1
]}

Shklovskii, BI ^{[1
]}

机构：

[1] Univ Minnesota, Dept Phys, Inst Theoret Phys, Minneapolis, MN 55455 USA

来源：

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2001年 / 293卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

charge inversion; polyelectrolyte; spherical macroion;

D O I：

10.1016/S0378-4371(01)00020-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页码：324 / 338

页数：15

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