UV-spectral changes for some azo compounds in the presence of different solvents
JOURNAL OF MOLECULAR LIQUIDS, vol.162, no.3, pp.148-154, 2011 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 162 Issue: 3
- Publication Date: 2011
- Doi Number: 10.1016/j.molliq.2011.07.002
- Journal Name: JOURNAL OF MOLECULAR LIQUIDS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.148-154
- Keywords: Azo dyes, Linear solvation energy relationship, Solvatochromism, Absorption spectra, ELECTRONIC-ABSORPTION-SPECTRA, SOLAR PHOTOCATALYTIC DEGRADATION, DISPERSE DYES, AZOBENZENE, DERIVATIVES, POLYMER, FILMS
- Anadolu University Affiliated: Yes
Abstract
The electronic absorption spectra of four azo dyes with different substituents (such as Cl, I, OH) are determined at room temperature in twenty-one solvents with different polarities. The electronic transitions of azo dyes are interpreted. Linear solvation energy relationships have been investigated for solvatochromic behaviors and solute-solvent interactions of azo dyes. Linear solvation energy relationships were performed by multiple linear regression analysis using dielectric function, refractive index function and Kamlet-Taft parameters. We have observed that the hydrogen bonding acceptor ability and the induction-dispersive forces of solvent molecules have caused the bathochromic shift in absorption maxima of azo dyes. (C) 2011 Elsevier B.V. All rights reserved.