Used as an intermediate in organic semiconductor materials, particularly in the development of hole-transport materials for OLEDs (organic light-emitting diodes). Its bromine functionality allows for further coupling reactions, making it valuable in synthesizing conjugated polymers and small molecules for optoelectronic devices. Also employed in the preparation of fluorescent dyes and sensors due to its rigid carbazole backbone and good thermal stability. Commonly found in research related to photovoltaics and light-emitting materials.