Used as a coupling agent in sol-gel processes to introduce fluorescent properties into hybrid organic-inorganic materials. The compound links silica-based networks with organic polymers, enabling the development of sensors and optical coatings that respond to environmental changes. Its coumarin moiety provides inherent fluorescence, useful in designing detection systems for metal ions or pH variations. Commonly applied in thin films for luminescent materials and in functional coatings where traceability or monitoring is required. Also employed in the synthesis of molecularly imprinted polymers for selective recognition of analytes.