Photochemical | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-28

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Photochemistry


00:01:01 1 Concept
00:01:10 1.1 Grotthuss–Draper law and Stark-Einstein law
00:02:03 1.2 Fluorescence and phosphorescence
00:04:39 1.3 Experimental set-up
00:06:42 1.4 Photochemistry in combination with flow chemistry
00:07:20 1.5 Principles
00:09:31 2 Photochemical reactions
00:09:41 2.1 Examples of photochemical reactions
00:11:25 2.2 Organic photochemistry
00:13:50 2.3 Inorganic and organometallic photochemistry
00:15:10 2.4 Historical
00:16:03 3 See also



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SUMMARY
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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.