The Colour of Dyes

This is a selection of azo-dye compounds. The energy absorbed at the HOMO/LUMO gap corresponds to a wavelength of light, the observed colour of the dye is complementary to this wavelength.

Click on a structure to view the 3D models, HOMO/LUMO representations and corresponding colour information for each dye.
Aniline Yellow

Oil Red O

Disperse Orange 1

Janus Green B

Take a look at the synthesis of an azo-dye compound.

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