文献类型：期刊文献

英文题名：Creation of polystyrene nanoparticle patterns for structural color application

作者：Zhao, Haili[1];Gao, Hao[1];Wang, Yu[2];Chen, Tao[1]

机构：[1]Kunming Univ Sci & Technol, Fac Chem Engn, Kunming 650504, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：686

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;EI(收录号：20240815580133);WOS:【SCI-EXPANDED(收录号:WOS:001186685000001)】；

基金：The work was supported by the National Natural Science Foundation of China (52103262) and Youth Project of Yunnan Province Basic Research Program (202201AU070103) .

语种：英文

外文关键词：Discontinuous hydrophilic surface; PEGMA brushes; Selective assembly; Nanoparticle patterns; Structural color

摘要：The ability to regulate the spatial distribution of nanoparticles to generate patterns/arrays makes them promising applications in various fields. Here, a versatile and potential method, based on the polymer brushes patterned surface with hydrophilic-hydrophobic contrast characteristic, was developed to create the nanoparticle patterns with complicated architectures and controllable structural colors on the silicon/glass substrate. Employing DMDmediated Photo-ATRP process, the selective growth of hydrophilic poly (ethylene glycol) methyl acrylate (PEGMA) brushes on the surface functionalized with hydrophobic initiators was achieved. Subsequently, the asobtained hydrophilic-hydrophobic patterned substrate was acted as a template for regulating the assembly behavior and spatial arrangement of polystyrene (PS) nanoparticles, leading to the generation of nanoparticle patterns with desired architectures. Especially, the assembly densities could be controlled via tuning the grafting density of patterned PEGMA brushes, which enabled the effective regulation of structural color on the patterned surface. On the basis of the spatiotemporal control of patterned hydrophilic region formation, the sequential assembly of different nanoparticles on the same substrate could be achieved, allowing for a multi-component nanoparticle pattern for structural color-based anticounterfeiting application. The presented technique for the creation of nanoparticle patterns/arrays exhibits a tremendous practical potential in various fields including high -throughput preparation of structural colors, anticounterfeiting/ information encryption, and optical hypersurfaces.