Synthesis and Evaluation of Changes Induced by Solvent and Substituent in Electronic Absorption Spectra of New Azo Disperse Dyes Containig Barbiturate Ring

Figure 1

Electronic absorption spectra of azo dyes (4a–4f) at room temperature (𝐶=1.0×10⁻⁶mol⋅L⁻¹). (red) DMSO, (green) DMF, (blue) EtOH; (a) 4a, (b) 4b, (c) 4c, (d) 4d, (e) 4e, (f) 4f.

(a)

(b)

(c)

(d)

(e)

(f)