Used as a key intermediate in organic synthesis, particularly in Suzuki-Miyaura cross-coupling reactions for the construction of conjugated organic materials. Commonly employed in the development of organic light-emitting diodes (OLEDs), serving as a building block for hole-transport materials and host compounds in emissive layers. Also utilized in the preparation of organic semiconductors and photovoltaic materials due to its stable carbazole core and efficient charge-transport properties. Its boronic ester functionality allows for reliable and selective coupling with aryl halides, making it valuable in the synthesis of complex aromatic systems for optoelectronic applications.