Research Article

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

Table 1

Experimental electronic absorption maxima for investigated dyes and solvent parameters [2123].

Solventsπ * (30) (nm)
293 K293 KDye (a)Dye (b)Dye (c)Dye (d)Dye (e)Dye (f)

DMSO1.000.000.7647.241.477045.0394.48394.38396.26424.71425.12422.48
DMF0.870.000.6938.251.430543.8393.04392.85393.39423.04424.64421.57
Ethanol0.540.830.7725.331.361151.9392.34390.51392.41421.99423.25419.31