Gold Nanocluster-Based Luminescence Microcomposites by Interfacial Polymerization

Controlled interfacial polymerization in conventional or Pickering emulsions enables the precise fabrication of cavity-like architectures, providing a versatile platform for the composite construction. Fluorescent gold nanoclusters, acting as interfacial stabilizers, not only enhance emulsion stability but also simultaneously impart luminescent properties to the resulting composites. In this study, modified gold nanoclusters were used as one of the monomers in the interfacial polymerization process to prepare emulsions with fluorescent properties. These gold nanoclusters were localized on the droplet surfaces, forming spherical shell structures. To further enhance the functionality of these structures, we incorporated an additional fluorescent dye as a filler within the spherical shells, resulting in microcomposites with unique optical characteristics. The combination of two luminophores produced white luminescence, which could shift to different colors depending on the incident light. This innovative approach offers new possibilities for applications of advanced optical technologies.