最新成果

张泽新教授在Soft Matter 上发表一篇文章

发布时间:2017-05-03 11:25

Title: Syntheses and applications of concave and convex colloids with precisely controlled shapes 


 Author:  Zhifeng Chenga,b, Fuhua Luoa, Zexin Zhanga,* and Yu-qiang Mab,a,*  

  
 Affiliation:

aCenter for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou, 215006, P. R. China 

 bNational Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P. R. China


Abstract:   

This article describes a facile and promising method to prepare uniform, non-spherical colloidal particles with shape and chemistry anisotropies. We first synthesize polystyrene (PS) colloids with concave structure of multi-dimples through a unique combination of two-stage dispersion polymerizations and a programmed feeding of cross-linker during the synthesis. These concave particles, followed by a seeded polymerization process, could be swelled out to precisely controlled shapes by varying the amount of swelling chemicals. A myriad of concave- and convex-shaped colloidal particles, including hemispheres, peanuts and bowls, are obtained. In addition, we explore the potential applications of the synthesized anisotropic colloids, including field-driven directional self-assembly, optical hiding effect and colloidal surfactant