Abstract
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 0.005-0.015 mM.
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