聚吡咯
分子印迹聚合物
循环伏安法
傅里叶变换红外光谱
材料科学
分子印迹
介电谱
玻璃碳
电极
聚合物
检出限
纳米传感器
导电聚合物
伏安法
化学工程
分析化学(期刊)
聚合
核化学
电化学
化学
纳米技术
色谱法
有机化学
选择性
物理化学
复合材料
催化作用
工程类
作者
Vinod K. Gupta,Mehmet Lütfi Yola,Nuran Özaltı́n,Necip Atar,Zafer Üstündağ,Lokman Uzun
标识
DOI:10.1016/j.electacta.2013.08.132
摘要
Over the past two decades, molecular imprinted polymers have attracted a broad interest from scientists in sensor development. In the preparation of molecular imprinted polymers the desired molecule (template) induces the creation of specific recognition sites in the polymer. In this study, the glassy carbon electrode (GCE) based on molecularly imprinted polypyrrole (PPy) was fabricated for the determination of tobramycin (TOB). The developed electrode was prepared by incorporation of a template molecule (TOB) during the electropolymerization of pyrrole on GCE in aqueous solution using cyclic voltammetry (CV) method. The performance of the imprinted and non-imprinted electrodes was evaluated by square wave voltammetry (SWV). The effect of pH, monomer and template concentrations, electropolymerization cycles on the performance of the imprinted and non-imprinted electrodes was investigated and optimized. The non-modified and TOB-imprinted surfaces were characterized by using atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), electrochemical impedance spectroscopy (EIS) and CV. The linearity range of TOB was 5.0 × 10−10–1.0 × 10−8 M with the detection limit of 1.4 × 10−10 M. The developed nanosensor was applied successfully for the determination of TOB in egg and milk.
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