张拥军课题组 | CHINESE JOURNAL OF POLYMER SCIENCE
发布人：功能高分子材料教育部重点实验室 发布时间：2017/09/14 浏览次数： 221 次
Assembly of highly ordered 2D arrays of silver-PNIPAM hybrid microgels
JOURNAL OF POLYMER SCIENCE, 2017, 35(10):
1212-1221 特刊: SI
A strategy was developed for the synthesis of highly ordered 2D arrays of Ag-PNIPAM hybrid microgel. The highly ordered 2D arrays of PNIPAM microgel were prepared by dispersing PNIPAM microgel on a charge-reversible substrate. The microgel spheres self-assembled into a 3D colloidal crystal, and the first 111 plane was fixed in situ onto the substrate as a result of spontaneous charge reversal of the substrate, leaving a high-quality 2D array of PNIPAM microgel. Ag nanoparticles were then synthesized in situ inside the microgel spheres by introduction of Ag+ ions into the microgel spheres and reduction with sodium borohydride. The resulting 2D arrays are highly ordered. The inter-particle distance in the array can be tuned. In addition, the method allows the synthesis of large size arrays and the use of nonplanar substrate.