Planet-Satellite Micellar Superstructures Formed by ABCB Terpolymers in Solution.
Planet-Satellite Micellar Superstructures Formed by ABCB Terpolymers in Solution.
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DOI：
10.1021/acsmacrolett.7b00058.s001
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发表时间：
2017-03
影响因子：
5.8
通讯作者：
Chao Duan;Weihua Li;F. Qiu;A. Shi
中科院分区：
文献类型：
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作者：
Chao Duan;Weihua Li;F. Qiu;A. Shi
用聚合物自洽场理论和耗散粒子动力学模拟方法研究了ABCB四嵌段共聚物溶液中由宿主胶束(行星)和多个客体胶束(卫星)组成的行星-卫星纳米结构的存在和相对稳定性。理论结果表明，ABCB四嵌段聚合物与疏溶剂的A-和C-嵌段以及亲溶剂的B-嵌段的自组装可以导致各种行星-卫星超结构的形成，其中行星和卫星分别由A-和C-嵌段组成。此外，卫星的数量由两个B区块的比例控制。围绕这颗行星的卫星的排列类似于著名的汤姆森问题的解，该问题涉及球体上给定数量的电子的最佳排列。除了为设计具有潜在先进应用的行星-卫星超结构的新型多隔室胶束提供了一条简便的途径，该研究还加强了多嵌段共聚物可能成为制造复杂纳米结构的有用平台的前景。
The occurrence and relative stability of planet-satellite nanostructures, composed of a host micelle (the planet) accompanied by a number of guest micelles (the satellites), in ABCB tetrablock terpolymer solutions are studied using the polymeric self-consistent field theory and dissipative particle dynamics simulations. The theoretical results demonstrate that the self-assembly of the ABCB tetrablock terpolymers with solvophobic A- and C-blocks and solvophilic B-blocks could lead to the formation of various planet-satellite superstructures, where the planet and satellites are composed of the A- and C-blocks, respectively. Furthermore, the number of satellites is controlled by the ratio of the two B-blocks. The arrangement of the satellites surrounding the planet resembles the solution of the well-known Thomson's problem concerning the optimum arrangement of a given number of electrons on a sphere. Besides providing a facile route to engineering novel multicompartment micelles with planet-satellite superstructures for potential advanced applications, the study strengthens the prospect that multiblock copolymers could become a useful platform for the fabrication of complex nanostructures.