Carbazole potassium salt is widely used in organic synthesis, particularly as a key intermediate in the production of dyes, pigments, and pharmaceuticals. Its application extends to the development of electroactive materials, where it serves as a building block for organic semiconductors and conductive polymers. These materials are essential in the fabrication of organic light-emitting diodes (OLEDs), solar cells, and other optoelectronic devices. Additionally, it is utilized in the synthesis of carbazole-based compounds that exhibit biological activity, making it valuable in medicinal chemistry for drug discovery and development. Its role in polymerization processes also contributes to the creation of advanced materials with tailored properties.