Multicolor Fluorescent Hydrogels Based on CaZnOS Phosphors for Anticounterfeiting Applications

in the CaZnOS hosts. The prepared fluorescent hydrogels can be customized into various shapes and arranged to form arrays of encrypted information, which are essential for high-performance anticounterfeiting applications. We anticipate that this strategy will facilitate the development of diverse types of fluorescent hydrogels and enhance the security of anticounterfeiting applications.