Elastically driven linker aggregation between two semiflexible polyelectrolytes.
Elastically driven linker aggregation between two semiflexible polyelectrolytes.
复制标题
两种半柔性聚电解质之间弹性驱动的连接体聚集。
DOI：
10.1103/physrevlett.86.2182
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发表时间：
2001
影响因子：
8.6
通讯作者：
A. Liu
中科院分区：
文献类型：
--
作者：
I. Borukhov;R. Bruinsma;W. Gelbart;A. Liu
从理论上研究了连接两个半柔性带电聚合物的移动的连接体，如连接DNA或F-肌动蛋白链的多价抗衡离子的行为。链的弯曲刚性诱导一个有效的斥力之间的链接在大的距离，而链间的静电斥力导致一个有效的短程相互吸引力。我们发现了从稀释的连接剂气体（其中链在连接剂之间形成大环）到连接平行链的致密无序连接剂流体的圆形相变。链配对的开始发生在圆形过渡内。
The behavior of mobile linkers connecting two semiflexible charged polymers, such as polyvalent counterions connecting DNA or F-actin chains, is studied theoretically. The chain bending rigidity induces an effective repulsion between linkers at large distances while the interchain electrostatic repulsion leads to an effective short-range interlinker attraction. We find a rounded phase transition from a dilute linker gas where the chains form large loops between linkers to a dense disordered linker fluid connecting parallel chains. The onset of chain pairing occurs within the rounded transition.