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Synthesis, substituent effects and solvatochromic properties of some disperse azo dyes derived from N-phenyl-2, 2′-iminodiethanol

✍ Scribed by M.R. Yazdanbakhsh; A. Mohammadi

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
452 KB
Volume
148
Category
Article
ISSN
0167-7322

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✦ Synopsis

A series of monoazo disperse dyes based on N-phenyl-2, 2′-iminodiethanol were synthesized using p-substituted anilines as diazo components. The prepared dyes were characterized by UV-vis, FT-IR and 1 H NMR spectroscopic techniques. The effect of varying pH and the evaluation of solvatochromic properties of synthesized dyes with donor-acceptor p-substituted groups are described. The absorption maxima of these dyes changed very significantly by the introduction of various substituents on the para-position of benzene ring.

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Seven new azo disperse dyes based on N-benzyl-N-ethyl-aniline were synthesized and characterized by UV-Vis, FT-IR and 1 H NMR spectroscopic techniques. The UV-visible studies and solvatochromic behavior of all dyes in 15 solvents with different polarity were examined and a meaningful correlation was