Part 1: Synthesis and visible absorption spectra of some new monoazo dyes derived from ethyl 2-amino-4-(4 '-substitutedphenyl)thiophenes

Babur, Banu; Ertan, Nermin

doi:10.1016/j.saa.2014.04.042

Part 1: Synthesis and visible absorption spectra of some new monoazo dyes derived from ethyl 2-amino-4-(4 '-substitutedphenyl)thiophenes

Atıf İçin Kopyala

Babur B., Ertan N.

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, cilt.131, ss.319-328, 2014 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 131
Basım Tarihi: 2014
Doi Numarası: 10.1016/j.saa.2014.04.042
Dergi Adı: SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.319-328
Gazi Üniversitesi Adresli: Evet

Özet

Series of monoazo dyes from some ethyl 2-amino-4-(4'-substitutedphenyl) thiophenes were prepared and characterized. The structure of the substances was confirmed by FT-IR, H-1 NMR and mass spectroscopic techniques. The relationship among the structure of the dyes, their absorption characteristics and the solvatochromic and halochromic behaviors of the dyes were investigated. Introduction of electron-accepting substituent into the diazo moiety results in large bathochromic shifts in all solvents used. The dyes exhibited positive solvatochromism and their solvatochromic properties were discussed in relation to tautomerism. (C) 2014 Elsevier B.V. All rights reserved.