Used in biosensor development due to its ability to undergo polymerization upon exposure to UV light or heat, forming polydiacetylene (PDA) structures. These PDA systems change color in response to environmental stimuli such as temperature, pH, or binding events, making them ideal for colorimetric detection in medical diagnostics and pathogen sensing. Commonly employed in liposome-based assays and thin films for real-time monitoring of molecular interactions. Also utilized in research for developing smart packaging and environmental monitoring devices.