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Progress in Color, Colorants and Coatings، جلد ۱۱، شماره ۲، صفحات ۶۹-۷۸
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عنوان انگلیسی Study of Environment and pH Effects on the Spectral Behavior of Arylazobenzylidene Dyes
چکیده انگلیسی مقاله 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.
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نویسندگان مقاله A. Ghanadzadeh Gilani |
Department of Chemistry, Faculty of Sciences, University of Guilan

A. Mohammadi |
Department of Chemistry,Faculty of Sciences, University of Guilan

M. Riazi |
Department of Chemistry, Faculty of Sciences, University of Guilan

نشانی اینترنتی http://pccc.icrc.ac.ir/article_75741_ed86737f4a6f1bc88e8f98be382f824b.pdf
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/535/article-535-1062421.pdf
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