Fabrication of Bisphenol A Sensor Utilizing Electrode Modified with Molecularly Imprinted Polymer
Fabrication of Bisphenol A Sensor Utilizing Electrode Modified with Molecularly Imprinted Polymer
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DOI：
10.1149/1.2981162
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发表时间：
2008-10
期刊：
影响因子：
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通讯作者：
Nobuyuki Yokota;Yusuke Fuchiwaki;I. Kubo
中科院分区：
文献类型：
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作者：
Nobuyuki Yokota;Yusuke Fuchiwaki;I. Kubo
为了建立一种简单、快速的双酚A（BPA）传感器体系，研究了在金电极表面制备分子印迹聚合物（MIP）膜的方法。以4-乙烯基吡啶、乙二醇二甲基丙烯酸酯和双酚A为原料，通过预聚物混合物聚合制备了双酚A分子印迹聚合物。将其旋涂在金电极表面，紫外光照射2-5 min，聚合成一薄层。用原子力显微镜观察了MIP修饰电极和裸金电极的表面，发现MIP修饰电极与金电极有明显的区别。BPA在金电极和MIP修饰电极上的电化学氧化电位为580 mV（Ag/AgCl参比电极）。该电极可用作BPA传感器，BPA的阳极电流在5-15 μM范围内与浓度有关。
Preparation of molecularly imprinted polymer (MIP) layer on a plate type gold electrode was investigated in order to establish a simple and rapid bisphenol A (BPA) sensor system. MIP for BPA was polymerized from pre-polymer cocktail composed of 4-vinylpyridine, ethylene glycol dimethacrylate and BPA. It was spin-coated on the surface of the gold electrode and polymerized as a thin layer by UV light-irradiation for 2-5 min. The surface of MIP modified electrode and bare gold electrode was observed with atomic force microscopy and the MIP modified electrode was apparently different from the gold electrode. BPA was electrochemically oxidized around 580 mV vs. Ag/AgCl reference electrode with the gold electrode and the MIP modified electrode prepared in this study. This electrode can be served as BPA sensor and the anodic current of BPA depended on its concentration at the range of 5-15 µM.