Used as a key building block in organic electronics and optoelectronic materials due to its rigid, conjugated structure and ability to participate in click chemistry. Commonly employed in the synthesis of porous organic frameworks and covalent organic frameworks (COFs) for applications in gas storage, sensing, and catalysis. Its multiple ethynyl groups enable efficient crosslinking in polymer networks, enhancing thermal and mechanical stability. Also explored in aggregation-induced emission (AIE) systems for use in solid-state lighting and luminescent sensors.