Used as a key intermediate in organic electronics, particularly in the synthesis of conjugated polymers for organic photovoltaics (OPVs) and organic field-effect transistors (OFETs). Its structure supports extended π-conjugation, enhancing charge transport properties. Commonly employed in Suzuki or Stille coupling reactions to build donor-acceptor type polymers. Also utilized in the development of fluorescent sensors due to its rigid aromatic framework and ability to undergo functionalization at the aldehyde groups. Shows promise in dye-sensitized solar cells (DSSCs) as a building block for metal-free sensitizers.