Used as a high-performance polymer in optical and electronic applications due to its excellent thermal stability and intrinsic luminescence. Commonly applied in organic light-emitting diodes (OLEDs) as an emissive layer component, where its rigid backbone enhances charge transport and light emission efficiency. Also utilized in sensors for detecting metal ions and biological molecules, leveraging its fluorescence response to environmental changes. Its strong UV absorption and photostability make it suitable for use in photolithography and advanced coating systems exposed to harsh conditions.