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The electrochemical approach to antioxidant activity assay of metal complexes with dipicolylamine ligand, containing 2,6-di-tert-butylphenol groups, based on electrochemical DPPH-testстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 26 декабря 2015 г.
- Авторы: Tyurin V.Yu, Moiseeva A., Shpakovsky D.B., Milaeva E.R.
- Журнал: Journal of Electroanalytical Chemistry
- Том: 756
- Год издания: 2015
- Издательство: Elsevier Sequoia
- Местоположение издательства: Switzerland
- Первая страница: 212
- Последняя страница: 221
- DOI: 10.1016/j.jelechem.2015.07.024
- Аннотация: The novel electrochemical approach to antioxidant activity assay based on the reaction with stable radical 2,2´-diphenyl-1-picrylhydrazyl (DPPH) monitored by the rotating disk electrode (RDE) method was developed. This method has advantages in comparison with usual spectrophotometrical assay since it can be applied to colored compounds and in a wide range of concentrations. The electrochemical behaviour of Co(II), Mn(II), Fe(II), Cu(II), Zn(II), Ni(II) complexes with di-(2- picolyl)amine ligand L(1) containing antioxidant 2,6-di-tert-butylphenol pendant was studied by cyclic voltammetry (CV), and their radical scavenging properties were examined using the electrochemical DPPH-test. CV curves for these compounds contain the peaks of ligand and metal oxidation/reduction. The possible schemes of redox transformations were proposed. It was shown that the antioxidant capacity of these complexes depends strongly upon their redox properties, and the metal nature plays key role. Thus, the Co(II), Zn(II), Ni(II) complexes are less active than free ligand. But the easily oxidized Fe(II) complex shows high antioxidant activity which is comparable with the efficiency of the well-known antioxidant Trolox. In this case the synergetic antioxidant effect is observed due to the presence of an essential organic radical scavenger and redox-active metal. The feasible mechanism of antioxidant activity is discussed
- Добавил в систему: Тюрин Владимир Юрьевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | 1-s2.0-S1572665715300278-main.pdf | 1-s2.0-S1572665715300278-main.pdf | 1,6 МБ | 10 сентября 2015 [V.Tyurin] |