Peroxynitrite activity of hemin-functionalized reduced graphene oxide

被引:42
|
作者
Oprea, Raluca [1 ,2 ]
Peteu, Serban F. [2 ]
Subramanian, Palaniappan [1 ]
Qi, Wang [1 ]
Pichonat, Emmanuelle [3 ]
Happy, Henri [3 ]
Bayachou, Mekki [4 ,5 ]
Boukherroub, Rabah [1 ]
Szunerits, Sabine [1 ]
机构
[1] Univ Lille 1, IRI, USR 3078, F-59658 Villeneuve Dascq, France
[2] Natl Inst R&D Chem & Petrochem, Bucharest 060021, Romania
[3] Univ Lille 1, CNRS, UMR 8520, IEMN, F-59655 Villeneuve Dascq, France
[4] Cleveland State Univ, Dept Chem, Cleveland, OH 45115 USA
[5] Cleveland Clin, Lerner Res Inst, Dept Pathobiol, Cleveland, OH 44195 USA
基金
美国国家科学基金会;
关键词
NITRIC-OXIDE; HYDROGEN-PEROXIDE; REACTIVE OXYGEN; GRAPHITE OXIDE; ELECTROCHEMICAL DETECTION; FLUORESCENT-PROBE; OXIDATIVE STRESS; LIVING CELLS; REAL-TIME; REDUCTION;
D O I
10.1039/c3an00678f
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Conducting interfaces modified with reduced graphene oxide (rGO) have shown improved electrochemical response for different analytes. The efficient formation of functionalized rGO based materials is thus of current interest for the development of sensitive and selective biosensors. Herein, we report a simple and environmentally friendly method for the formation of a hemin-functionalized rGO hybrid nanomaterial that exhibits remarkable sensitivity to peroxynitrite (ONOO-) in solution. The hemin-functionalized rGO hybrid nanomaterial was formed by mixing an aqueous solution of graphene oxide (GO) with hemin and sonicating the suspension for 5 h at room temperature. In addition to playing a key role in biochemical and electrocatalytic reactions, hemin has been proven to be a good reducing agent for GO. The sensitivity of the peroxynitrite sensor is approximate to 7.5 +/- 1.5 nA mM(-1) with a detection limit of 5 +/- 1.5 nM.
引用
收藏
页码:4345 / 4352
页数:8
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