Dynamics of collapse of flexible polyampholytes

被引：34

作者：

Lee, N ^{[1
]}

Thirumalai, D ^{[1
]}

机构：

[1] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 2000年 / 113卷 / 13期

关键词：

D O I：

10.1063/1.1312267

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We provide a theory for the dynamics of collapse of flexible polyampholytes (PAs) using Langevin equation. Metastable pearl-necklace structures form in a time scale proportional to N-4/5 (N is the number of monomers). In the late stage of collapse the pearls merge with the largest one growing at the expense of smaller ones (Lifshitz-Slyozov mechanism). The time scale for this process is tau(coll)similar to N. Counterion-mediated collapse of strongly charged polyelectrolytes (PEs) follow a similar route to the globular state. Simulations support the proposed collapse mechanism for PAs and PEs. (C) 2000 American Institute of Physics. [S0021-9606(00)52237-5].

引用

页码：5126 / 5129

页数：4

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