Synthesis and Characterization of Schiff Base Polymer Dyes Containing Electron-Withdrawing and Electron Releasing Groups

Abstract

New thermally stable water soluble azo dye and azo-Schiff base polymer dyes were synthesized via conden- sation reaction of 4-methyl pyridine and poly- 4,4’-diamino biphenyl-2,2’-disulfonic acid with substituted azo-coupled 2-hydroxy-5- 4-nitrophenyl diazenyl benzaldehyde. For the structural analyses of synthesized substances FT-IR and NMR analysis, florescence and UV-Vis measurements for optical properties and the thermal behavior TG-DTA of the prepared dyes have been determined using thermogravimetric technique. Azomethine dyes AZOBMS and AZOBMSP have relatively higher thermal durability in comparison to azo dye AZOBM . The solvatochromic studies of the prepared dyes in DMSO, DMF, CH3CN and THF. In addition, spect- rophotometric and spectrofluorometric studies showed that these dyes were good absorbent and fluorescent. The effect of various organic solvents with different polarities on the UV-Vis spectra and fluorescence analyses of the dyes has been also studied.

Keywords

• Imine polymers,Synthesis,characterization and thermal analysis,azo-azomethine dyes

Elektron Salıcı ve Electron Çekici Grup İçeren Schiff Bazı Polimer Boyaların Sentez ve Karakterizasyonu

Abstract

Metil piridin ve poli 4,4’-diamino bifenil-2,2’-disülfonik asit ile 2-hidroksi-5- 4-nitrofenil4 diazenil benzaldehit bileşiği ile yeni ısıl kararlı suda çözünebilen azo boyaları ve azo-Schiff baz polimeri boyaları sentezlendi. Sentezlenen maddelerin yapısal analizleri FT-IR ve NMR, optik özellikleri için floresans ve UVVis ölçümleri, termogravimetri tekniği kullanılarak ısıl davranışları TG-DTA ölçüldü. Azometin boyaların AZOBMS ve AZOBMSP solvatokromik çalışmaları DMSO, DMF, CH3CN ve THF de yapıldı. Ayrıca farklı organik çözücülerde spektrofotometrik ve spektrofloremetrik çalışmaları sonucunda iyi absorban ve floresan özellik gösterdiği gözlendi

Keywords

• İmin polimerler,sentez,karekterizasyon ve ısıl analiz,azo-azometin boyalar

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