Synthesis and characterization of potential antioxidant agent of novel pyridylazo ligand and its palladium complex

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-07-12 DOI:10.4314/bcse.v38i5.12

Hasan Shamran Mohammed, Atica Sultan

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Abstract

A new azo dye ligand namely ((E)-1-(4-hydroxy-3-(pyridin-3-yldiazenyl)phenyl)ethan-1-one) (HPPE) was synthesized by the coupling reaction of diazoinium salt of 3-aminopyridine and 4-hydroxyacetophenone. The palladium complex was prepared by reacting palladium chloride with the HPPE ligand. These compounds were characterized by different techniques such as mass, 1H-NMR, infrared, UV-Vis spectroscopies. The infrared data reveal that azo ligand reacting as bidentate via oxygen and nitrogen atom of azo group and it reveals the important functions as carbonyl group, methyl group, and azo group in the ligand and the complex such. The palladium complex is square planer. The ligand showed a visible colorimetric pH sensitive chemosensor, fast response time and is fully reversible and exhibited a large wavelength shift more than170 nm accompanied by excellent sensitivity of pH in the range of 3-9. The HPPE ligand and palladium complex showed potential antioxidant activity especially the ligand showed activity so close to the ascorbic acid. KEY WORDS: Antioxidant, Palladium complex, Pyridyl, Azo dye, Acidity Bull. Chem. Soc. Ethiop. 2024, 38(5), 1301-1310. DOI: https://dx.doi.org/10.4314/bcse.v38i5.9

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新型吡啶偶氮配体及其钯配合物潜在抗氧化剂的合成与表征

一种新的偶氮染料配体（(E)-1-(4-羟基-3-(吡啶-3-基二氮)苯基)乙-1-酮）（HPPE）是通过 3-氨基吡啶的重氮鎓盐和 4-羟基苯乙酮的偶联反应合成的。钯配合物是通过氯化钯与 HPPE 配体反应制备的。这些化合物通过质量、1H-NMR、红外、紫外-可见光谱等不同技术进行了表征。红外数据显示，偶氮配体通过偶氮基团的氧原子和氮原子发生双齿反应，并揭示了配体和络合物中羰基、甲基和偶氮基团的重要功能。钯配合物呈方形平面。配体显示出可见的比色 pH 敏感化学传感器，响应时间快，完全可逆，波长偏移大，超过 170 nm，对 3-9 范围内的 pH 具有极好的敏感性。HPPE 配体和钯复合物显示出潜在的抗氧化活性，尤其是配体的活性非常接近抗坏血酸。关键词：抗氧化剂、钯络合物、吡啶基、偶氮染料、酸度 Bull.Chem.Soc.2024, 38(5), 1301-1310. DOI: https://dx.doi.org/10.4314/bcse.v38i5.9

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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