Responsive core-shell microspheres of polystyrene@poly(methyl methacrylate-ethylene glycol dimethacrylate-acrylic acid) [PS@poly(MMA-EGDMA-AA] were obtained by surfactant-free emulsion polymerization and were employed for the preparation of monolithic polystyrene-based colloidal photonic crystals (CPCs) via evaporation induced-vertical deposition method. CPCs of distinct photonic stop band (PSB), which falls in the visible light region that exhibits brilliant structural colors were obtained by tuning the diameters of the core-shell microspheres. Further, as-fabricated CPCs were used for the facile, rapid visual detection of acetone by way of reversibly tuning the PSB of the CPCs with an apparent visual color change within fraction of a second. The present study demonstrates the feasibility of PS@poly(MMA-EGDMA-AA)-based CPCs as a simple, quick and reversible sensing platform for the detection of acetone.

通过无表面活性剂乳液聚合获得聚苯乙烯@聚（甲基丙烯酸甲酯-乙二醇二甲基丙烯酸酯-丙烯酸）[PS @聚（MMA-EGDMA-AA）]的响应性核壳微球，并用于制备整体式聚苯乙烯基通过蒸发诱导垂直沉积法制备胶体光子晶体（CPC），通过调节核-壳微球的直径，获得了落入可见光区域并显示出明亮结构颜色的不同光子阻带（CBS）的CPC。 ，通过以可逆的方式调整CPC的PSB并在不到一秒的时间内出现明显的视觉颜色变化，将预制的CPC应用于便捷，快速的丙酮视觉检测。本研究证明了PS @ poly（MMA）的可行性-EGDMA-AA）的每次点击费用，快速可逆的丙酮检测平台。