9-(3,5-Dibromophenyl)carbazole is an organic compound featuring a carbazole core substituted at the 9-position with a 3,5-dibromophenyl group. This structure combines the excellent hole-transporting properties of carbazole with the reactivity of bromine atoms, making it a versatile building block. Its primary application is in the field of organic electronics, particularly as a key intermediate or monomer for synthesizing advanced organic light-emitting diode (OLED) materials, host materials, and hole-transporting materials (HTMs). The bromine substituents serve as reactive sites for further cross-coupling reactions (e.g., Suzuki, Buchwald-Hartwig) to construct larger, more complex conjugated systems essential for high-performance optoelectronic devices. As a halogenated aromatic compound, it also serves as a valuable organic synthesis building block. Its well-defined structure and reactivity make it useful in academic and industrial research for developing novel functional materials beyond displays, including in organic photovoltaics (OPVs) and sensors.