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

作　　者：王成行[1] 李春涯[1] 李婷[1] 徐秀灵[1] 王长发[1] 

机构地区：[1]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《武汉大学学报（理学版）》2005年第6期668-672,共5页Journal of Wuhan University:Natural Science Edition

摘　　要：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(φ-NO2)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1.0×10-8～2.0×10-5 mol/L范围内具有良好的线性关系(r=0.998 3),检出限可达1.0×10-9 mol/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） （31 nitrophenyl） methinephosphonate （9 NO2） imprinted sensor was prepared by sol gel method based on p tert-butylcalix[6]arene as functional monomer, and the possible reactive mechanism of φ-NO2 on this sensor was detailedly investigated by IR, HPLC and electrochemical methods. After optimization of experimental parameters for linear sweep volta mmetry （LSV）, analytical curves were obtained in the range from 1.0×10^-8 mol/L to 2.0×10^-5mol/L anda 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-NO2 in cabbage samples with a satisfactory result.

关 键 词：分子烙印 溶胶-凝胶 膦酸脂 传感器 电化学方法 

分 类 号：O657.15[理学—分析化学]