Plot of fluorophore brightness (ε × Φ) versus the wavelength of maximum absorption (λmax) for the major classes of fluorophores. The color of the structure indicates its wavelength of maximum emission (λem). For clarity, only the fluorophoric moiety of some molecules is shown.
From Lavis, L.D., and Raines, R.T. 2008. ACS Chemical Biology 3:142155, © 2008 American Chemical Society.