Used as a key building block in the synthesis of conjugated porous organic polymers and covalent organic frameworks (COFs) for applications in photovoltaics, photocatalysis, and organic electronics. Its extended π-conjugated structure with multiple aldehyde functionalities enables strong light absorption and efficient charge transport, making it suitable for optoelectronic devices. The presence of benzo[c][1,2,5]thiadiazole enhances electron-accepting properties, useful in donor-acceptor systems for organic solar cells. Additionally, its rigid framework supports the construction of stable, high-surface-area materials for gas storage or sensing applications.