Azobenzene solutions are widely used in photoresponsive materials due to their ability to undergo reversible trans-cis isomerization upon exposure to light. This property makes them valuable in optical data storage, where molecular changes can represent binary states. They are also employed in photonic switches and liquid crystal displays to control alignment and orientation using light. In biomedical applications, azobenzene derivatives act as photopharmacological agents, allowing drug activity to be controlled with light for targeted therapy. Additionally, they are used in smart polymers and actuators that change shape or mechanical properties in response to light, enabling development of light-driven micro-machines and sensors. Their dynamic response supports research in molecular machines and nanoscale devices.