Used as a cross-linking agent in polymer chemistry, particularly in the synthesis of conjugated microporous polymers and organic frameworks. Its dual bromomethyl groups readily undergo nucleophilic substitution, enabling efficient linkage with aromatic or heterocyclic units. Commonly applied in the development of organic electronic materials, such as organic light-emitting diodes (OLEDs) and sensors, due to its rigid naphthalene core that enhances π-conjugation. Also serves as a building block in covalent organic frameworks (COFs) for gas storage and catalysis. Additionally, employed in the preparation of fluorescent dyes and probes, where its structure supports tunable emission properties.