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https://hdl.handle.net/11499/5070
Title: | Azocalixarenes. 3: Synthesis and investigation of the absorption spectra of hetarylazo disperse dyes derived from calix[4]arene | Authors: | Şener, İzzet. Karcı, Fikret. Kiliç, E. Deligöz, H. |
Keywords: | Absorption properties Azocalix[4]arenes Calixarene Calixarene dyes Diazo-coupling reaction Heterocyclic amines Solvent effect Substituent effect Absorption Amines Dissociation pH effects Spectrum analyzers Synthesis (chemical) Absorption spectra Diazotization Heterocyclic rings Dyes absorption azo dye disperse dye dye manufacturing synthesis |
Abstract: | Synthesis of some novel hetarylazocalix[4]arene dyes was achieved by diazotisation of six heterocyclic amines using nitrosyl sulphuric acid, coupling with calix[4]arene. The absorption spectra of the dyes are discussed, both the effect of varying pH and solvent upon the absorption ability of azocalixarenes. The hetarylazocalix[4]arene readily undergo acidic dissociation into the common anion in DMF and DMSO. Absorption maxima of the dyes showed large bathochromic effects in comparison with analogues dyes containing carbocyclic amine residue. The colour of the dyes is discussed with respect to the nature of the heterocyclic ring and substituents there in. Concentration effects on the visible absorption maxima of the dyes are also reported. © 2004 Elsevier Ltd. All rights reserved. | URI: | https://hdl.handle.net/11499/5070 https://doi.org/10.1016/j.dyepig.2003.11.015 |
ISSN: | 0143-7208 |
Appears in Collections: | Fen-Edebiyat Fakültesi Koleksiyonu Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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