Widely used in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions, enabling the formation of carbon-carbon bonds between aromatic halides and boronic esters. Its carbazole moiety makes it valuable in the preparation of conjugated materials for optoelectronic applications, such as organic light-emitting diodes (OLEDs), organic photovoltaics (OPVs), and organic field-effect transistors (OFETs). The boronic ester group offers enhanced stability and solubility, facilitating handling and purification in synthetic processes. Commonly employed as a building block in the development of hole-transport materials and host compounds in emissive layers due to the electron-donating nature of carbazole. Also used in the synthesis of functional polymers and small molecules for sensor applications and medicinal chemistry research.