基于DMMP的ZnTPP-MIP的性能研究  

Preparation and Properties of the Zinc Porphyrin-molecularly Imprinted Film with Dimethyl Methylphosphonate

作　　者：刘小娟[1] 吴锋景[1] 唐旭伟 李谷才[1] 姜夏云 刘良志[1] 李伍[1] 

机构地区：[1]湖南工程学院化学化工学院,湖南湘潭411104

出　　处：《重庆师范大学学报（自然科学版）》2016年第6期114-119,共6页Journal of Chongqing Normal University:Natural Science

基　　金：湖南工程学院校级青年项目(No.0900100115057);湖南省教育厅科学研究项目(No.16C0392)

摘　　要：以甲基膦酸二甲酯(DMMP)为模板分子,甲基丙烯酸(MAA)为功能单体,掺杂四苯基卟啉锌(ZnTPP),采用光引发接枝聚合方法在玻片上制备锌卟啉分子印迹聚合物复合膜(ZnTPP-MIP)。通过紫外和荧光光谱研究了DMMP与ZnTPP之间的结合作用,利用接触角分析印迹膜的亲水性,扫描电镜观察膜的微孔结构。利用光谱法研究了ZnTPP-MIP膜吸附性能和选择性。实验结果表明在可见区波长436nm附近,ZnTPP-MIP膜可以吸附检测水中2.0×10-6 mmol·L-1的DMMP。这将为复杂有机磷农药样品中DMMP的专一性识别提供一种新的途径。A zinc porphyrin-molecularly imprinted polymer（ZnTPP-MIP）film for dimethyl methyl phosphonate（DMMP）was prepared by direct photo-grafting polymerization onto the glass slide,using DMMP as template,methacrylic acid as monomer and tetraphenylporphyrin zinc（ZnTPP）as dopant.The property of axial coordination reaction between ZnTPP and DMMP in CH2Cl2 solution was studied by ultraviolet-visible and fluorescence spectroscopies.Then hydrophilicity was investigated by the measurement of contact angle,and the morphologies of ZnTPP-MIP/ZnTPP-NIP films were characterized by scanning electron microscopy.The recognition and selectivity of the ZnTPP-MIP film were studied by ultraviolet-visible spectroscopy experiments.The results showed that the ZnTPP-MIP film had a good effect on adsorption sensitivity for DMMP,when addition of the DMMP to the Zn-MIP film resulted in a decrease in absorbance intensity at 436 nm due to the coordination of the ZnTPP and DMMP.2.0×10-6 mmol·L-1 of DMMP concentration was detected.This will provide a new way for specific recognition of the target DMMP in the complex organophosphorus pesticide samples.

关 键 词：分子印迹技术 接枝聚合方法 四苯基卟啉锌 甲基膦酸二甲酯 吸附性 

分 类 号：TB34[一般工业技术—材料科学与工程] O657.3[理学—分析化学]