策略为 Ag-PNIPAM 混合 microgel 的高度订的 2D 数组的合成被开发。PNIPAM microgel 的高度订的 2D 数组被在费用可逆的底层上驱散 PNIPAM microgel 准备。进 3D 自我装配的 microgel 范围胶体的水晶,和开始的 111 飞机由于底层的自发的费用颠倒在 situ 被修理到底层上,离开 PNIPAM microgel 的一个高质量的 2D 数组。Ag nanoparticles 然后被 Ag + 离子的介绍在 microgel 范围内在 situ 综合进 microgel 范围和减小与钠 borohydride。产生 2D 数组高度被订。在数组的内部粒子的距离能被调节。另外,方法允许大尺寸数组的合成和 nonplanar 底层的使用。
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.