We talked about Glow Sticks, we talked about Fireworks. Now it feels like the right time to look at another big factor in color of compounds, the conjugated systems.
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Sources:
My publication on the synthesis of Neocryptolepine
https://pubs.rsc.org/en/content/articlelanding/2009/ob/b816608k#!divAbstract
On Colour and Coloring
https://en.wikipedia.org/wiki/Color
https://en.wikipedia.org/wiki/Additive_color
https://en.wikipedia.org/wiki/Subtractive_color
On Covalent Bonds and Conjugated Systems
https://en.wikipedia.org/wiki/Covalent_bond
https://en.wikipedia.org/wiki/Conjugated_system
https://en.wikipedia.org/wiki/Delocalized_electron
Dyes and Pigments
https://en.wikipedia.org/wiki/Dye
https://en.wikipedia.org/wiki/Pigment
https://en.wikipedia.org/wiki/Azo_dye
Magic Ink
https://en.wikipedia.org/wiki/Color_Wonder
https://en.wikipedia.org/wiki/Leuco_dye
https://patents.google.com/patent/US9573403B1/en
