Enhanced anodic Ru(bpy)3(2+) electrogenerated chemiluminescence by polyphenols.
Anodic Ru(bpy)3(2+) electrogenerated chemiluminescence (ECL) can be enhanced by polyphenols in alkaline solution. Spin trapping-electron spin resonance (ESR) experiments verified that reactive oxygen species (ROS) were generated during the electrolysis of Ru(bpy)3(2+) in alkaline solution, and oxidation of quercetin enhanced Ru(bpy)3(2+) ECL at anodic potential by producing additional ROS. This ECL enhancement can be used to analyze real sample and evaluate antioxidant activity of polyphenols.
Lei
Rong
R
Key laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
Xu
Xiao
X
Xu
Da
D
Zhu
Gang
G
Li
Na
N
Liu
Huwei
H
Li
Ke'an
K
D000975:Antioxidants / Q000737:chemistry; D003497:Cyclic N-Oxides / Q000737:chemistry; D004563:Electrochemistry; D004566:Electrodes; D004578:Electron Spin Resonance Spectroscopy; D005419:Flavonoids / Q000737:chemistry*; D005609:Free Radicals / Q000032:analysis / Q000737:chemistry; D049449:Luminescence; D009942:Organometallic Compounds / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D059808:Polyphenols; D011794:Quercetin / Q000737:chemistry
D000975:Antioxidants; D003497:Cyclic N-Oxides; D005419:Flavonoids; D005609:Free Radicals; D009942:Organometallic Compounds; D010636:Phenols; D059808:Polyphenols; C415768:tris(2,2'-bipyridyl)ruthenium(II); C029217:phenyl-N-tert-butylnitrone; D011794:Quercetin