In this study, four arylazobenzylidene dyes (a-d) were synthesized with excellent yields in two steps using Knoevenagel condensation and azo-coupling reactions. Absorption spectra of these dyes with different substituents were investigated in organic solvents as a function of solvent polarity. The spectral features of synthesized arylazobenzylidene dyes were described according to azo-hydrazone tautomerism as well as the solvatochromic characteristic of the approved tautomer. The nature and degree of solute-solvent interactions were illustrated using Kamlet-Taft multi-parameter polarity scales. The effects of acid-base on the UV-visible absorption spectra of the dyes were reported. In addition, different absorption characteristics were observed for these dyes in pure diethanolamine.
Ghanadzadeh Gilani, A., Mohammadi, A., & Riazi, M. (2018). Study of Environment and pH Effects on the Spectral Behavior of Arylazobenzylidene Dyes. Progress in Color, Colorants and Coatings, 11(2), 69-78. doi: 10.30509/pccc.2018.75741
MLA
A. Ghanadzadeh Gilani; A. Mohammadi; M. Riazi. "Study of Environment and pH Effects on the Spectral Behavior of Arylazobenzylidene Dyes". Progress in Color, Colorants and Coatings, 11, 2, 2018, 69-78. doi: 10.30509/pccc.2018.75741
HARVARD
Ghanadzadeh Gilani, A., Mohammadi, A., Riazi, M. (2018). 'Study of Environment and pH Effects on the Spectral Behavior of Arylazobenzylidene Dyes', Progress in Color, Colorants and Coatings, 11(2), pp. 69-78. doi: 10.30509/pccc.2018.75741
VANCOUVER
Ghanadzadeh Gilani, A., Mohammadi, A., Riazi, M. Study of Environment and pH Effects on the Spectral Behavior of Arylazobenzylidene Dyes. Progress in Color, Colorants and Coatings, 2018; 11(2): 69-78. doi: 10.30509/pccc.2018.75741
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