Molecular Design Institute, Department of Chemistry, New York University, New York, NY, 10003, USA.
Tandon School of Engineering, Department of Chemical & Biomolecular Engineering, New York University, Brooklyn, NY, 11201, USA.
Angew Chem Int Ed Engl. 2017 May 8;56(20):5507-5511. doi: 10.1002/anie.201701456. Epub 2017 Apr 12.
A facile method to synthesize shape-shifting patchy particles on the colloidal scale is described. The design is based on the solvent-induced shifting of the patch shape between concave and convex features. The initial concave patchy particles were synthesized in a water suspension by a swelling-induced buckling process. Upon exposure to different solvents, the patches were tuned reversibly to be either concave or convex. These particles can be assembled into chained, branched, zigzag, and cyclic colloidal superstructures in a highly site-specific manner by surface-liquid capillary bridging. The biphasic nature of the particles also enables site-selective surface functionalization.
本文描述了一种在胶体尺度上合成变形的有图案粒子的简单方法。该设计基于图案形状在凹面和凸面特征之间的溶剂诱导转变。初始的凹面有图案粒子是通过溶胀诱导的屈曲过程在水悬浮液中合成的。暴露于不同的溶剂后，这些图案可以可逆地调变成凹面或凸面。这些粒子可以通过表面液体毛细桥接以高度特定的方式组装成链式、分支式、锯齿形和环形胶体超结构。粒子的两相性质还能够实现选择性的表面功能化。
