Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/1173
Title: Yeni disazo boyarmaddelerin sentezi ve absorpsiyon özelliklerinin incelenmesi
Other Titles: Synthesis of new disazo dyes and investigated of their absorption properties
Authors: Demirçalı, Aykut
Advisors: Fikret Karcı
Keywords: Etil Asetoasetat
Pirazol
Diazo Kenetlenme Reaksiyonu
Disazo Boyarmaddeleri
Solvatokromizm
Ethyl Acetoacetate
Pyrazole
Diazo-Coupling Reaction
Disazo Dyes
Solvatochromism
Publisher: Pamukkale Üniversitesi Fen Bilimleri Enstitüsü
Abstract: Bu çalışmada, 5-amino-4-arilazo-3-metil-1H-pirazol türevleri diazolanmış ve etil asetoasetat ile kenetlenerek etil pirazolil azo asetoasetat bileşikleri elde edilmiştir. Elde edilen etil pirazolil azo asetoasetat bileşikleri, hidrazin mono hidrat ile reaksiyona sokularak bir seri disazo-3-metil-1H-pirazol-5-on türevleri sentezlenmiştir. Sentezlenen disazo boyarmaddeler element analizi, UV, FT-IR ve 1H-NMR gibi spektral yöntemlerle karakterize edilmiş ve pH, çözücü değişimi, elektron alıcı ve elektron verici grupların o-, m- ve p- köşelerinde bağlı olmasının bu bileşiklerin absorpsiyon yeteneklerini nasıl etkilediği incelenmiştir.
In this study, 5-amino-4-arylazo-3-methyl-1H-pyrazoles were diazotised and coupled with ethyl acetoacetate to give ethyl pyrazolyl azo acetoacetates. Ethyl pyrazolyl azo acetoacetates were then reacted with hydrazine mono hydrate to give disazo-3-methyl-1H- pyrazole-5-ones. The synthesized disazo dyes were characterized by elemental analysis and spectral methods. The effect of varying pH and solvent upon the absorption ability of dyes substituted with electron-withdrawing and electron-donating groups at their o-, m-, p-position was examined in detail.
URI: https://hdl.handle.net/11499/1173
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