Ring polymers in the melt state: the physics of crumpling.
Ring polymers in the melt state: the physics of crumpling.
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DOI：
10.1103/physrevlett.112.118302
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发表时间：
2013-10
影响因子：
8.6
通讯作者：
A. Rosa;R. Everaers
中科院分区：
文献类型：
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作者：
A. Rosa;R. Everaers
环状聚合物在熔体或浓溶液中的构象统计受其淬灭微观拓扑状态的强烈影响。这种效应对于非连接的非打结环尤其强烈，已知非连接的非打结环会起皱和分离，并且已经被牵连为间期染色体的一般行为的模型。在这里，我们使用一种计算效率高的多尺度方法来证明，总轮廓长度为Lr的环的熔化可以定量地映射到具有回转半径<$R（g）（2）（Lr）<$<$L（r）（2ν）和ν = 0.32 ± 0.01的相互作用格树的熔化上。
The conformational statistics of ring polymers in melts or dense solutions is strongly affected by their quenched microscopic topological state. The effect is particularly strong for nonconcatenated unknotted rings, which are known to crumple and segregate and which have been implicated as models for the generic behavior of interphase chromosomes. Here we use a computationally efficient multiscale approach to show that melts of rings of total contour length Lr can be quantitatively mapped onto melts of interacting lattice trees with gyration radii ⟨R(g)(2)(Lr)⟩ ∝ L(r)(2ν) and ν = 0.32 ± 0.01.