UV-spectral changes for some azo compounds in the presence of different solvents

SIDIR Y. G., SIDIR İ., BERBER H., TAŞAL E.

JOURNAL OF MOLECULAR LIQUIDS, cilt.162, sa.3, ss.148-154, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 162 Sayı: 3
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1016/j.molliq.2011.07.002
  • Dergi Adı: JOURNAL OF MOLECULAR LIQUIDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.148-154
  • Anahtar Kelimeler: Azo dyes, Linear solvation energy relationship, Solvatochromism, Absorption spectra, ELECTRONIC-ABSORPTION-SPECTRA, SOLAR PHOTOCATALYTIC DEGRADATION, DISPERSE DYES, AZOBENZENE, DERIVATIVES, POLYMER, FILMS
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

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.