Photochemistry
Photochemistry is the study of the interaction of light and chemicals.
grass is green because chlorophyll (an organometallic complex) absorbs other types of light but reflects green. If you try to grow plants under green light (460nm to 600nm) - they will reflect it all and not be able to photosynthesise. No photochemical reaction will have occurred.
Photochemists use techniques such as:
- Quantum yield - finding what proportion of molecules react when a known flux of light is used to irradiate them.
- Flash Photolysis - using a high intensity Xenon flash lamp to initiate a reaction which can then be studied be techniques auch as absorption spectroscopy.
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