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采用沉淀聚合法制备了以高效氟氯氰菊酯(Beta-cyhalothrin,BC)为模板分子的荧光分子印迹聚合物。以甲基丙烯酸甲酯为功能单体,三羟甲基丙烷三甲基丙烯酸酯作为交联剂。通过红外光谱、紫外光谱、扫描电镜、透射电镜、热重分析证明已成功地合成荧光分子印迹聚合物微球,并且具有良好的球形形貌(微球粒径约为200 nm,印迹层厚度约为20nm)、良好的单分散性和卓越的热稳定性。通过荧光检测实验可知,荧光强度与BC的浓度呈线性关系并建立了线性回归方程:I0/I-1=0.004 1c-0.018 6,R2=0.983 7,检出限为13.251 nmol/L。通过选择性实验说明,荧光分子印迹聚合物对BC具有较好的特异性识别性能。
A fluorescent molecularly imprinted polymer with beta-cyhalothrin (BC) as a template was prepared by precipitation polymerization. Methyl methacrylate as a functional monomer, trimethylolpropane trimethacrylate as a crosslinking agent. The molecularly imprinted polymer microspheres have been successfully synthesized by FT-IR, UV-Vis, SEM, TEM and TG. The microspheres have a good spherical morphology (about 200 nm in diameter and about 20 nm), good monodispersity and excellent thermal stability. Fluorescence detection experiments showed that the fluorescence intensity and BC concentration showed a linear relationship and established a linear regression equation: I0 / I-1 = 0.004 1c-0.018 6, R2 = 0.983 7, the detection limit of 13.251 nmol / L. By selective experiments, fluorescent molecularly imprinted polymers have better specific recognition performance on BC.