A novel dinuclear Schiff-base copper(II) complex modified electrode for ascorbic acid catalytic oxidation and determination

被引：41

作者：

Zhang, Zhijun ^{[1
]}

Li, Xi ^{[1
,2
]}

Wang, Chenggang ^{[3
]}

Zhang, Chaocan ^{[4
]}

Liu, Peng ^{[1
,2
]}

Fang, Tingting ^{[1
]}

Xiong, Yan ^{[1
]}

Xu, Wenjing ^{[1
]}

机构：

[1] Wuhan Univ Technol, Sch Sci, Dept Chem, Wuhan 430070, Peoples R China

[2] Wuhan Univ Technol, Sch Sci, Inst High Pressure & Temp Phys, Wuhan 430070, Peoples R China

[3] Cent China Normal Univ, Coll Chem, Wuhan 430079, Peoples R China

[4] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China

来源：

DALTON TRANSACTIONS | 2012年 / 41卷 / 04期

关键词：

POLYMER-MODIFIED ELECTRODE; METAL-COMPLEXES; GOLD ELECTRODE; ELECTROPOLYMERIZATION; REACTIVITY; LIGANDS; SALICYLALDEHYDE; GENERATION; PALLADIUM; MECHANISM;

D O I：

10.1039/c1dt11370d

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new dinuclear copper salicylaldehyde-glycine Schiff-base complex [Cu(2)(Sal-Gly)(2)(H(2)O)(2)] was synthesized and structurally characterized. [Cu(2)(Sal-Gly)(2)(H(2)O)(2)] crystallized in the monoclinic system in the P2(1)/c space group. The molecule is a dinuclear complex, formed by two [Cu(Sal-Gly)(H(2)O)] units. The electropolymerization properties of the copper complex on a glass carbon electrode were studied at different potential ranges. The electropolymerization occurred when the high scan potential reached 1.4 V. The modified electrode exhibited good electrocatalytic oxidation properties to ascorbic acid and showed a sensitivity of 22.9 nA mu M(-1) (r(2) = 0.9998) and detection limit of 0.39 mu M (S/N = 3) in the amperometric determination of ascorbic acid. The designed determination method can be used to analyze vitamin C tablets.

引用

页码：1252 / 1258

页数：7

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