Used as a key building block in organic synthesis, particularly in the preparation of conjugated polymers and molecular wires due to its rigid aromatic backbone and reactive ethynyl groups. Its hydroxyl groups allow for further functionalization or participation in hydrogen bonding, making it valuable in supramolecular chemistry and materials science. Commonly employed in Sonogashira coupling reactions to construct extended π-systems for applications in organic electronics, such as organic field-effect transistors (OFETs) and photovoltaic devices. Also explored in the development of fluorescent sensors and electroactive materials owing to its electronic properties and structural planarity.