Dimethyl azobenzene-4,4'-dicarboxylate is widely used in the field of photoresponsive materials due to its ability to undergo reversible photoisomerization. This property makes it valuable in the development of light-sensitive systems, such as smart coatings and optical storage devices. It is also employed in molecular switches and actuators, where its structural changes in response to light can be harnessed to control mechanical or electronic functions. In research, it serves as a model compound for studying photochromic behavior and designing advanced materials with tunable properties. Additionally, its application extends to liquid crystal displays (LCDs), where it can modulate light transmission and improve display performance.