【摘要】 制备具有不同粒径和折射率的聚苯乙烯(PS)和聚甲基丙烯酸甲酯(PMMA)微球,采用多次尖端导流法制备多重二维胶体晶体异质结构(2D-CCHs)阵列,在2D-CCHs阵列的间隙处填充丙烯酸类凝胶,再将PS或PMMA模板微球去掉,得到传质速度更快的2D-CCHs反蛋白石凝胶.经扫描电子显微镜证实,所制备的异质结构胶体晶体均为二维结构,且排列较为规整.德拜衍射、反射光谱和结构色分析结果表明,2D-CCHs的光学性质主要是各单层二维胶体晶体阵列独立衍射的叠加.随着p H值由7降低至3,双层2D-CCHs反蛋白石凝胶的德拜衍射环直径均减小了约80 nm,表明2D-CCHs反蛋白石凝胶可应用于化学传感领域.更多还原

【Abstract】 Polystyrene( PS) and poly( methyl methacrylate)( PMMA) suspensions with different particle sizes and refractive index were prepared. A successive air / water interface self-assembly method was developed to fabricate two-dimensional colloidal crystal heterostructures( 2D-CCHs) array. Furthermore,2-hydroxyethyl methacrylate-acrylic acid( HEMA-AA) 2D-CCHs inverse opals with high mass transfer efficiencies were obtained after removing the opal templates. The prepared heterostructures are highly ordered two-dimensional structures proved by scanning electron microscopy images( SEM). Debye diffraction rings,reflectance spectra and structural colors suggested that the optical properties of 2D-CCHs are attributed to overlay of the individual diffraction of single 2D colloidal crystal. With the p H value decreased from 7 to 3,Debye diffraction rings’ diameters of double-layers 2D-CCHs inverse opals both shrank nearly 80 nm. The response of 2D-CCHs to p H indicates their preliminary application in chemical sensors.更多还原