膦酸酯分子烙印传感器及其电化学分析应用

膦酸酯分子烙印传感器及其电化学分析应用 Preparation of Phosphonate Imprinted Sensor Based on Sol-Gel and Used on Electroanalysis 王成行 WANG Cheng-hang 1 2 first-author 李春涯 LI Chun-ya 1 2 李婷 LI Ting 1 2 徐秀灵 XU Xiu-ling 1 2 王长发 WANG Chang-fa 1 2 武汉大学化学与分子科学学院 武汉大学化学与分子科学学院 College of Chemistry and Molecular Sciences,Wuhan University College of Chemistry and Molecular Sciences,Wuhan University 武汉大学化学与分子科学学院,湖北,武汉,430072 武汉大学化学与分子科学学院,湖北,武汉,430072 以杯[6]芳烃为功能单体,基于溶胶-凝胶和分子烙印技术,制备了O,O-二甲基-（2,4-二氯苯氧基乙酰基）（3′-硝基苯基）次甲基膦酸酯（-φNO2）分子烙印电化学传感器,并采用多种测试方法研究了该传感器的电极反应行为,给出了可能的反应机理.在优化的实验条件下,伏安还原峰电流与有机膦酸酯的浓度在1.0×10-8 2 .0×10-5mol/L范围内具有良好的线性关系（r=0.998 3）,检出限可达1.0×10-9mol/L.将此传感器用于白菜样品中的膦酸酯的测定,回收结果满意. A O,O-dimethyl-（2,4-dichlorophenoxyacetoxyl）（3′-nitrophenyl）methinephosphonate（（φ-NO 2 ）） imprinted sensor was prepared by sol-gel method based on p-tert-butylcalix\arene as functional monomer,and the possible reactive mechanism of φ-NO 2 on this sensor was detailedly investigated by IR,HPLC and electrochemical methods.After optimization of experimental parameters for linear sweep voltammetry（LSV）,analytical curves were obtained in the range from 1.0×10 -8 mol/L to 2.0×10 -5 mol/L and a detection limit of 1.0×10 -9 mol/L（r=0.998 3）.The sensor showed good sensitivity,selectivity,and reproducibility to the template molecule,and was also used to detect φ-NO 2 in cabbage samples with a satisfactory result. 分子烙印 溶胶-凝胶 膦酸酯 传感器 电化学方法 molecular imprinting sol-gel phosphonate sensor electrochemical method O657.1 2005-06-01 2021-04-01 6