Interfacial polymer phase segregation and self-assembly of square colloidal crystals
Interfacial polymer phase segregation and self-assembly of square colloidal crystals
复制标题
方形胶体晶体的界面聚合物相分离与自组装
DOI：
--
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
A. Mohraz
中科院分区：
文献类型：
--
作者：
M. Shindel;Szu‐Wen Wang;A. Mohraz
在 PEG 聚合物存在的情况下，聚苯乙烯胶体在空气-水界面表现出独特的双峰动力学。我们将此归因于聚合物在界面处聚集成富含聚合物和稀疏聚合物的区域。吸附到聚合物耗尽区域的胶体保持流动性并自组装成具有方形对称性的二维晶体，这归因于颗粒上的波状接触线和液滴的负高斯曲率。据我们所知，这是通过界面胶体组装形成热力学有利的二维方形晶体的第一个例子。
Polystyrene colloids exhibit unique bimodal dynamics at the air–water interface in the presence of PEG polymers. We attribute this to agglomeration of the polymer into polymer-rich and polymer-sparse domains at the interface. Colloids adsorbed to polymer-depleted regions retain mobility and self-assemble into two-dimensional crystals with square symmetry, which is ascribed to an undulated contact line on the particles and the droplet's negative Gaussian curvature. To our knowledge, this is the first example of thermodynamically favoured two-dimensional square crystals formed by means of interfacial colloid assembly.
影响因子：
41.2
作者：
Herzig, E. M.;White, K. A.;Clegg, P. S.
通讯作者：
Clegg, P. S.