Used as a key building block in the synthesis of porous organic frameworks such as covalent organic frameworks (COFs) and conjugated microporous polymers (CMPs). Its rigid, triangular structure with multiple ethynyl groups enables the formation of extended π-conjugated networks, which are beneficial for applications in gas storage, catalysis, and optoelectronic devices. The ethynyl functionalities allow for efficient Sonogashira coupling reactions, facilitating the construction of highly stable and ordered network materials. Also explored in organic electronics due to its charge transport properties and structural regularity.