| Yazarlar |
Prof. Dr. İzzet ŞENER
Pamukkale Üniversitesi, Türkiye |
Prof. Dr. Nesrin ŞENER
Kastamonu Üniversitesi, Türkiye |
Erişkin Selinay
|
| Özet |
| In this study, a convenient method for the synthesis of thirteen novel tetrakisazo dyes containing 25,27-bis-(4-nitrobenzyloxy)-26,28-dihydroxycalix[4] arene have been described. 5,11,17,23-Tetra-tert-butyl-25,26,27,28- tetrahydroxycalix[4]arene, 25,26,27,28-tetrahydroxycalix[4]arene and 25,27-bis-(4-nitrobenzyloxy)-26,28-dihydroxycalix[4]arene were synthesized. 2-arylhydrazone-3-ketiminobutyronitriles 1(a-m) were synthesized and reacted with hydrazine hydrate to afford the corresponding 5-amino-4-arylazo-3-methyl-1- H-pyrazoles 2(a-m). Thirteen novel hetaryltetrakisazocalix[4]arene derivatives 6(a-m) were achieved by diazotisation of 5-amino-4-arylazo-3-methyl-1-H- pyrazoles using nitrosylsulphuric acid, coupling with 25,27-bis-(4- nitrobenzyloxy)-26,28-dihydroxycalix[4]arene. The obtained hetaryltetrakisazocalix[4]arene dyes 6(a-m) were characterized based on FT-IR, 1H NMR and Mass spectroscopic techniques as well as Elemental Analysis. The solvatochromic behaviour of these dyes in various solvents was examined. Acid-base effect on the visible absorption maxima of the dyes were also reported. © 2012 Elsevier Ltd. All rights reserved. |
| Anahtar Kelimeler |
| Azocalix[4]arenes | Diazo-coupling reaction | Diazotization | Disazo dyes | Pyrazole | Solvaatochromism |
| 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 | 01-2013 |
| Cilt No | 96 |
| Sayı | 1 |
| Sayfalar | 256 / 263 |
| Doi Numarası | 10.1016/j.dyepig.2012.08.015 |
