Deng LiEr, Fu Ming, Wang YongSheng, He DaWei, Zhao AiLun, Tao YingLei, Fu WeiJia
Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China.
J Nanosci Nanotechnol. 2010 Mar;10(3):1778-81. doi: 10.1166/jnn.2010.2082.
Ordered macroporous polymers have been prepared by replication of colloidal crystals made from silica spheres 298 nm in diameter. The colloidal crystals were prepared on a clean indium tin oxide (ITO) glass substrate by sedimentation of a solution of a silica colloidal dispersed solution. The air between the silica spheres was filled by the monomer of poly(methyl methacrylate) (PMMA) that can be subsequently polymerized. After infiltration, the silica spheres were removed by means of etching with hydrofluoric acid (HF) aqueous solution and left a polycrystalline network of interconnected pores. These macroporous ordered structures represent a promising approach for bandgap engineering and can be used as the foundation of various potential applications.
