分子印迹聚合物膜修饰电极的制备及在香草醛测量中的应用

Molecular imprinted polymer film modified electrodes and its application in measurement of vanillin

以香草醛为模板分子,采用光引发聚合法和电化学聚合法分别在电极表面合成了香草醛印迹聚合物,探讨了两种方法的印迹、洗脱及电极再生机理。研究了香草醛在两种电极上的吸附行为,结果表明两种电极均可对香草醛进行吸附富集并进行线性扫描伏安法测定。两种电极均有很好的选择性、稳定性,且各有特点。

Molecular imprinted polymer film （MIP） modified electrodes were prepared using vanillin as a template molecule by light-initiated polymerization and electrochemical polymerization. The mechanisms of imprinting, elution and regeneration of the electrodes were discussed. The adsorption characteristics of vanillin on the surface of the electrodes were studied. Vanillin can be preconcentrated by adsorption and be measured by linear sweep voltammetry. These electrodes had good selectivity and their own advantages.