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http://dx.doi.org/10.5012/bkcs.2014.35.2.610

Solvent Effects on the Electronic Spectra of Some Heterocyclic Azo Dyes  

Behera, Pradipta Kumar (Photochemistry Research Group, School of Chemistry, Sambalpur University)
Xess, Anita (Photochemistry Research Group, School of Chemistry, Sambalpur University)
Sahu, Sachita (Photochemistry Research Group, School of Chemistry, Sambalpur University)
Publication Information
Bulletin of the Korean Chemical Society / v.35, no.2, 2014 , pp. 610-616 More about this Journal
Abstract
The influence of solvent polarity on the absorption spectra of some synthesized azo dye with heterocyclic moieties and ${\beta}$-naphthol (1-3) have been investigated using a UV-Visible spectrophotometer. The spectral characteristics of the azo dyes (1-3) in different solvents at room temperature were analyzed. The solvatochromic empirical variables like ${\pi}^*$, ${\alpha}$, and ${\beta}$ have been used to discuss the solvatochromic behaviour of the dyes and to evaluate their contributions to the solute-solvent interactions. A multi-parameter regression model for quantitative assessment of the solute/solvent interaction and the absorption has been used to explain the solvent effect on azo dyes (1-3).
Keywords
Solvatochromism; Heterocyclic azo dye; Electronic spectra; Linear solvation energy relationship; Kamlet-Taft equation;
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