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https://hdl.handle.net/11499/5068
Title: | Azocalixarenes. 2: Synthesis, characterization and investigation of the absorption spectra of azocalix[6]arenes containing chromogenic groups | Authors: | Karcı, Fikret. Şener, İzzet. Deligöz, Hasalettin. |
Keywords: | Absorption spectra Azocalix[6]arenes Calixarene Calixarene dyes Diazo-coupling reaction Solvent effect Substituent effect Absorption Fourier transform infrared spectroscopy Nuclear magnetic resonance spectroscopy pH effects Synthesis (chemical) Ultraviolet radiation Diazo-coupling reactions Elemental analysis Dyes absorption azo dye dye property synthesis |
Abstract: | Twelve new azocalix[6]arenes (1-12) have been synthesized by linking o-, m-, p-chloroaniline, o-, m-, p-nitroaniline, o-, m-, p-toluidine, m-, p-anisidine and aniline to calix[6]arene through a diazo-coupling reaction. The prepared compounds were characterized based on UV-vis, FT-IR and 1H-NMR spectroscopic techniques as well as elemental analysis. The effect of varying pH and solvent upon the absorption ability of azocalixarenes substituted with electron-donating and electron-withdrawing groups at their o-, m-, p-position was examined. Observed results were compared with those found for unsubstituted azocalix[6]arenes. Concentration effects on the visible absorption maxima of the dyes are also reported. © 2004 Elsevier Ltd. All rights reserved. | URI: | https://hdl.handle.net/11499/5068 https://doi.org/10.1016/j.dyepig.2003.11.017 |
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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