Collapse of Stiff polyelectrolytes due to counterion fluctuations

被引：106

作者：

Golestanian, R ^{[1
]}

Kardar, M

Liverpool, TB

机构：

[1] Inst Adv Studies Basic Sci, Zanjan 45195159, Iran

[2] MIT, Dept Phys, Cambridge, MA 02139 USA

[3] Max Planck Inst Polymerforsch, D-55021 Mainz, Germany

[4] Univ Calif Santa Barbara, Inst Theoret Phys, Santa Barbara, CA 93106 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.82.4456

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effective elasticity of highly charged stiff polyelectrolytes is studied in the presence of counterions, with and without added salt. The rigid polymer conformations may become unstable due to an effective attraction induced by counterion density fluctuations. Instabilities at the longest (intermediate) length scales may signal a collapse to globule (necklace) states, respectively. In the presence of added salt, a generalized electrostatic persistence length is obtained, which has a nontrivial dependence on the Debye screening length. [S0031-9007(99)09257-1].

引用

页码：4456 / 4459

页数：4

共 38 条

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