4,4'-Dibromoazobenzene is used as a starting material in the synthesis of other azobenzene derivatives with tailored properties. It serves as a photoresponsive material in the development of light-sensitive devices and smart surfaces. Its ability to undergo reversible trans-cis isomerization under light exposure makes it valuable in optical data storage systems. It is applied in liquid crystal displays (LCDs) to enhance performance and stability. Additionally, it is utilized in molecular switches and sensors due to its photoactive properties. In research, it acts as a model compound for studying photochromic behavior and designing advanced functional materials.