Self-Assembly of Colloidal Molecules based on Host-Guest Chemistry and Geometric Constraints.
Self-Assembly of Colloidal Molecules based on Host-Guest Chemistry and Geometric Constraints.
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DOI：
10.1021/acs.langmuir.9b03891
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发表时间：
2020-03
期刊：
影响因子：
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通讯作者：
D. W. Kurka;Maximilian H. Niehues;B. Ravoo
中科院分区：
文献类型：
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作者：
D. W. Kurka;Maximilian H. Niehues;B. Ravoo
胶体分子的制备，即具有确定的聚集数和构型的胶体簇，在胶体化学和材料科学中具有持续和显著的兴趣，并且已经利用许多相互作用来驱动它们的（自）组装。然而，只有很少的报告是基于主客体化学的胶体分子的组装。在本文中，我们研究了组装带电荷的二氧化硅粒子到定义明确的，核心卫星ABn型胶体分子在水介导的主客体相互作用和几何约束。利用非共价吸引的内在动力学，并利用软聚合物壳来增强多价主客体相互作用，我们成功地合成了AB 3，AB 4和AB 6胶体分子通过选择合适的卫星与核心颗粒的尺寸比。
The preparation of colloidal molecules, i.e. clusters of colloids with a defined aggregation number and configuration, is of continued and significant interest in colloid chemistry and materials science, and numerous interactions have been utilized to drive their (self-)assembly. However, only very few reports are available on the assembly of colloidal molecules based on host-guest chemistry. In this paper, we investigate the assembly of like charged silica particles into well-defined, core-satellite ABn-type colloidal molecules in water mediated by host-guest interaction and geometric constraints. Exploiting the inherent dynamics of non-covalent attraction and making use of a soft polymer shell to enhance multivalent host-guest interactions, we successfully synthesized AB3, AB4 and AB6 colloidal molecules by selecting the appropriate size ratio of satellite to core particles.