Used as a key building block in the synthesis of metal-organic frameworks (MOFs), particularly for applications in gas storage, separation, and catalysis. Its zwitterionic structure and carboxylic acid groups enable strong coordination with metal ions, enhancing framework stability. Also explored in proton-conductive materials for fuel cell membranes due to its ability to facilitate proton transport. Additionally, serves as a functional linker in porous organic polymers for environmental applications like CO₂ capture and pollutant adsorption.