Organic photochemistry and photophysics study the behavior of organic molecules when exposed to light. Photochemistry focuses on light-induced chemical reactions, exploring how light absorption leads to excited states that can trigger chemical transformations. Photophysics, on the other hand, examines the physical properties of molecules in excited states, such as energy transfer, fluorescence, and phosphorescence. Together, these fields play a crucial role in areas like photodynamic therapy, solar energy conversion, and material science, where light interaction with organic compounds can drive useful processes, from environmental sustainability to advanced technologies in optoelectronics and molecular imaging.