Statistical mechanics of solvophobic aggregation: Additive and cooperative effects
Statistical mechanics of solvophobic aggregation: Additive and cooperative effects
复制标题
疏溶剂聚集的统计力学：相加效应和协同效应
DOI：
10.1063/1.1386420
复制
发表时间：
2001
影响因子：
4.4
通讯作者：
H. Chan
中科院分区：
文献类型：
--
作者：
S. Shimizu;H. Chan
Effects of possible non-pairwise-additive interactions on solvophobic aggregation are analyzed. A simple lattice model of binary solution with attractive solute-solute interactions is introduced to delineate the role of multiple-body effects in solute clustering and aggregation. Additive (noncooperative), cooperative, and anti-cooperative intersolute interactions are modeled by multiple-solute potentials that are respectively equal to, more favorable than, and less favorable than the sum of pairwise solute interactions. Under appropriate conditions, pairwise additive interactions and even interactions with significant anti-cooperativity can lead to aggregation and demixing. Cooperative interactions are not necessary for solute aggregation. Similarities and differences between solute aggregation and hydrophobic collapse of proteinlike heteropolymers are investigated. On average, heteropolymer collapse transitions as a function of solvophobic composition are significantly less sharp than the corresponding s...
