Used as a building block in organic electronics, particularly in the synthesis of conjugated polymers and metal-organic frameworks (MOFs). Its rigid, planar structure enhances charge transport properties, making it suitable for applications in organic light-emitting diodes (OLEDs) and perovskite solar cells. The carboxylic acid groups allow for strong coordination with metal ions, enabling the formation of stable, porous MOFs for catalysis or sensing. Additionally, its electron-rich carbazole units contribute to high thermal and oxidative stability, beneficial for durable optoelectronic devices.