Used in the synthesis of functionalized polymers and conductive materials due to its ability to undergo polymerization via the ethynyl group. Commonly employed in surface modification of carbon-based nanomaterials such as carbon nanotubes and graphene, enhancing dispersion and compatibility in composite systems. Serves as a building block in the development of metal-organic frameworks (MOFs) and coordination polymers, where the pyridine nitrogen acts as a ligand for metal ions. Applied in electrochemical sensors and catalysis support materials owing to its electron-rich structure and strong binding affinity to metal centers. Also utilized in click chemistry reactions, particularly copper-catalyzed azide-alkyne cycloaddition (CuAAC), for bioconjugation and molecular labeling.