Azocalixarenes. 3: Synthesis and investigation of the absorption spectra of hetarylazo disperse dyes derived from calix[4]arene

Sener I., Karci F., Kilic E., Deligoz H.

DYES AND PIGMENTS, cilt.62, sa.2, ss.141-148, 2004 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 62 Sayı: 2
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1016/j.dyepig.2003.11.015
  • Dergi Adı: DYES AND PIGMENTS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.141-148
  • Anahtar Kelimeler: calixarene, azocalix[4]arenes, heterocyclic amines, calixarene dyes, diazo-coupling reaction, solvent effect, substituent effect, absorption properties, TAUTOMERISM, DERIVATIVES
  • Ankara Üniversitesi Adresli: Hayır

Özet

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 arc also reported. (C) 2004 Elsevier Ltd. All rights reserved.