1. Chemical reactions in which a substance is oxidized by the action of light, typically involving the formation of reactive oxygen species.
Usage: technical; chemistry; plural form

Examples

• Photooxidations of organic compounds are accelerated by exposure to ultraviolet light.
• The degradation of polymers often occurs through photooxidations initiated by solar radiation.
• Researchers studied photooxidations in atmospheric chemistry to understand air pollution formation.
• Photooxidations play a key role in the weathering of materials exposed to sunlight.
• The rate of photooxidations can be controlled by adjusting light intensity and wavelength.