摘要
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。
In this work,fluorescent molecularly imprinted polymers（ FMIPs） was synthesized via precipitation polymerization.Betacyhalothrin（ BC） as the target molecule,methyl methacrylate（ MMA） as the functional monomer,3-trimethylolpropane trimethacrylate（ TRIM） as the cross linker.The characteristic of material has been measured by FTIR,UV,SEM,TEM,TGA. The resulting FMIPs are monodispersed sphere（ average diameter and shell thickness of as-synthesized microspheres were 200 and 20 nm）,and they have good thermal stability.The FMIPs is quenched specifically by BC by fluorescence detection.The linear range describe by the Stern-Volmer equation is I0/I-1 = 0. 004 1c-0. 018 6,R^2= 0. 983 7.A lower limit of detection（ LOD） is 13. 251 nmol/L.It is demonstrated that high selectivity of FMIPs towards BC by selective detection.
出处
《化学试剂》
北大核心
2017年第9期907-912,共6页
Chemical Reagents
基金
国家青年自然科学基金资助项目(21507045
21407057)
关键词
高效氟氯氰菊酯
荧光分子印迹聚合物
沉淀聚合
Beta-cyhalothrin
fluorescent molecularly imprinted polymers
precipitation polymerization
