Used in organic synthesis, particularly in the preparation of conjugated materials for optoelectronic devices. Its alkyne group enables click chemistry reactions, making it valuable in pharmaceutical research for building complex molecules through coupling reactions. Also employed in the development of covalent organic frameworks (COFs) and metal-organic frameworks (MOFs) due to its ability to form stable, extended structures. The carboxylic acid functionality allows for easy attachment to surfaces or polymers, useful in sensor fabrication and surface modification.