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Azocalixarenes 4 synthesis characterization and investigation of theabsorption spectra of hetarylazo substituted calix 6 arenes     
Yazarlar
Prof. Dr. İzzet ŞENER
Ankara Üniversitesi, Türkiye
Fikret Karcı
Pamukkale Üniversitesi, Türkiye
Emine Kılıç
Ankara Üniversitesi, Türkiye
Hasalettin Deligöz
Pamukkale Üniversitesi, Türkiye
Özet
Synthesis of seven novel hetarylazocalix[6] arene dyes was achieved by diazotisation of seven different heterocyclic amines using nitrosyl sulphuric acid, coupling with calix[6]arene. Hetarylazocalix[6]arene dyes were characterized based on FT-IR and 1H-NMR spectroscopic techniques as well as elemental analysis. The absorption spectra of the dyes are discussed, both the effect of varying pH and solvent upon the absorption ability of azocalixarenes. Absorption maxima of the prepared dyes showed large bathochromic effects in comparison with analogues dyes containing carbocyclic amine residue. The colour of the azocalixarene 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.
Anahtar Kelimeler
calixarene,hetarylazocalix[6]arenes,heterocyclic amines,diazo-coupling reaction,solvent effect,substituent effect,absorption properties
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı DYES AND PIGMENTS
Dergi ISSN 0143-7208
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce
Basım Tarihi 08-2004
Cilt No 62
Sayı 2
Sayfalar 149 / 157
Doi Numarası 10.1016/j.dyepig.2003.11.016