Used primarily in the synthesis of high-performance organic semiconductors and n-type organic electronic materials. It serves as a key building block for perylene diimide (PDI) derivatives, which are widely employed in organic photovoltaics (OPVs), organic field-effect transistors (OFETs), and dye-sensitized solar cells due to their excellent electron-accepting and charge-transport properties. Its rigid, planar structure enhances π-π stacking, improving device efficiency and stability. Also utilized in the development of fluorescent dyes and sensors, where its extended conjugation supports strong light absorption and emission in the visible range. Additionally, it finds use in polymer chemistry to create thermally stable, rigid polyimides for aerospace and microelectronics applications.