Fig. 5

Normalized fluorescence spectra (azo form) of studied dyes in LCs with different polarities: (a) Ponceau 4R (b) Sunset Yellow FCF (c) Tartrazine.

Normalized fluorescence spectra (azo form) of studied dyes in LCs with different polarities: (a) Ponceau 4R (b) Sunset Yellow FCF (c) Tartrazine.