Photochemistry Made easy Photosensitized Reactions and Photophysical processes Episode 05

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Photochemistry Made easy: Photosensitized Reactions and Photophysical processes Episode #05 • Photochemistry is the branch of chemistry concerned with the chemical effects of light. Generally, this term is used to describe a chemical reaction caused by absorption of ultraviolet (wavelength from 100 to 400 nm), visible light (400 – 750 nm) or infrared radiation (750 – 2500 nm). • In nature, photochemistry is of immense importance as it is the basis of photosynthesis, vision, and the formation of vitamin D with sunlight. Photochemical reactions proceed differently than temperature-driven reactions. Photochemical paths access high energy intermediates that cannot be generated thermally, thereby overcoming large activation barriers in a short period of time, and allowing reactions otherwise inaccessible by thermal processes. Photochemistry is also destructive, as illustrated by the photodegradation of plastics. • Credits • Essentials of Physical Chemistry by Arun Bahl J.D Tuli • http://bpharmstudy.blogspot.com/2014/... • https://en.wikipedia.org/wiki/Photoch...

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