Molecular imprinting polymer electrosensor based on gold nanoparticles for theophylline recognition and determination

被引：61
|
作者：
Kan, Xianwen [1 ]
Liu, Tingting [1 ]
Zhou, Hong [1 ]
Li, Chen [1 ]
Fang, Bin [1 ]
机构：
[1] Anhui Normal Univ, Anhui Key Lab Chemobiosensing, Coll Chem & Mat Sci, Wuhu 241000, Peoples R China
来源：
MICROCHIMICA ACTA | 2010年 / 171卷 / 3-4期
基金：
中国国家自然科学基金;
关键词：
Molecular imprinted polymer; Electrochemical sensor; Au nanoparticles; Theophylline; Recognition; CHROMATOGRAPHY-MASS SPECTROMETRY; SOLID-PHASE EXTRACTION; ELECTROCHEMICAL DETECTION; LIQUID-CHROMATOGRAPHY; CARBON NANOTUBES; SENSOR; ELECTRODE; CAFFEINE; SAMPLES; SURFACE;
D O I：
10.1007/s00604-010-0455-5
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
An electrochemical sensor for theophylline (ThPh) was prepared by electropolymerizing o-phenyl-enediamine on a glassy carbon electrode in the presence of ThPh via cyclic voltammetry, followed by deposition of gold nanoparticles using a potentiostatic method. The effects of pH, ratio between template molecule and monomer, number of cycles for electropolymerization, and of the solution for extraction were optimized. The current of the electro-active model system hexacyanoferrate(III) and hexacyanoferrate(IV) decreased linearly with successive addition of ThPh in the concentration range between 4.0 x 10(-7)similar to 1.5 x 10(-5) mol.L(-1) and 2.4 x 10(-4)similar to 3.4 x 10(-3) mol.L(-1), with a detection limit of 1.0 x 10(-7) mol.L(-1). The sensor has an excellent recognition capability for ThPh compared to structurally related molecules, can be regenerated and is stable.
引用
收藏
页码：423 / 429
页数：7
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