Used as a key building block in metal-organic frameworks (MOFs), particularly for gas storage and separation due to its rigid aromatic structure and multiple coordination sites. The tetrazole and carboxylic acid groups enable strong binding with metal ions, enhancing framework stability. Also explored in proton-conductive materials for fuel cell applications because of the proton-donating ability of the tetrazole ring. Additionally, serves as a linker in luminescent MOFs for sensor development, where it contributes to framework porosity and signal response upon analyte binding.