Synthesis of New Azo Dyes Containing Pyrazole and 1,3,4-Thiadiazole Derivatives and Investigation of Their Solvatochromic Properties

Abstract

In this study, where 2-amino-1,3,4-thiadiazole and 5-mercapto-2-amino-1,3,4-thiadiazole compounds were used as starting materials, five new azo dyes were synthesized using 3-amino-5-methyl pyrazolone, 3-amino-1-phenyl-5-methyl pyrazolone, and barbutyric acid as coupling components. 1H-NMR and FT-IR spectroscopic methods determined the molecular structures of the synthesized compounds. In addition, UV-Vis and absorption spectra of the synthesized compounds were taken, and their solvatochromic properties were investigated. As a result of absorption studies, positive solvatochromism was observed in the synthesis compounds.

Keywords

• Pyrazole
• thiadiazole
• azo dyes
• solvatochromic

Supporting Institution

Kastamonu University

Project Number

KÜ-BAP01/2021-37

Ethical Statement

In this study, we undertake that all the rules required to be followed within the scope of the "Higher Education Institutions Scientific Research and Publication Ethics Directive" are complied with, and that none of the actions stated under the heading "Actions Against Scientific Research and Publication Ethics" are not carried out.

Thanks

The authors are grateful to the Scientific Research Projects Council of Kastamonu University (KÜ-BAP01/2021-37).

Pirazol ve 1,3,4-Tiyadiazol Türevlerini İçeren Yeni Azo Boyalarının Sentezi ve Solvatokromik Özelliklerinin İncelenmesi

Abstract

2-amino-1,3,4-tiyadiazol ve 5-merkapto-2-amino-1,3,4-tiyadiazol bileşiklerinin başlangıç maddesi olarak kullanıldığı bu çalışmada; 3-amino-5-metil pirazolon, 3-amino-1-fenil-5-metil pirazolon ve barbütirik asitin kenetleme bileşenleri olarak kullanıldığı beş yeni azo boyarmadde sentezlenmiştir. Sentezlenen bileşiklerin moleküler yapıları 1H-NMR, FT-IR spektroskopik yöntemleri ile belirlenmiştir. Ayrıca, sentezlenen bileşiklerin UV-Vis. absorpsiyon spektrumları alınmış ve solvatokromik özellikleri incelenmiştir. Absorpsiyon çalışmaları sonucunda, sentezlenen bileşiklerde pozitif solvatokromizm gözlenmiştir.

Keywords

• Pirazol
• tiyadiazol
• azo boyarmadde
• solvatokromik

Supporting Institution

Kastamonu Üniversitesi

Project Number

KÜ-BAP01/2021-37

Ethical Statement

Bu çalışmada, “Yükseköğretim Kurumları Bilimsel Araştırma ve Yayın Etiği Yönergesi” kapsamında uyulması gerekli tüm kurallara uyulduğunu, bahsi geçen yönergenin “Bilimsel Araştırma ve Yayın Etiğine Aykırı Eylemler” başlığı altında belirtilen eylemlerden hiçbirinin gerçekleştirilmediğini taahhüt ederiz.

Thanks

Yazarlar Kastamonu Üniversitesi Bilimsel Araştırma Projeleri Kuruluna (KÜ-BAP01/2021-37) teşekkürlerini sunarlar.

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