沙林酸印迹聚邻苯二胺纳米膜制备及结构表征

采用电化学聚合法合成了对有机磷毒剂沙林具有特异识别的聚邻苯二胺(PPD)分子印迹纳米膜(iPPD).利用石英晶体微天平(QCM)证实了印迹效应的存在，并用循环伏安法(CV)、AFM、XPS进行了系统的结构表征.结果表明，分子印迹膜的膜厚约20 nm，膜的表面呈“石林”状，疏松多孔，具有良好的吸附性能.分子印迹主要影响聚合物的三维排列，而聚合物的化学组成没有发生改变.该种分子印迹纳米膜在选择性检测军用毒剂沙林中具有良好的应用前景.

The Preparation of Poly(o-phenylenediamine) Sarin Acid Imprinting Nanometer Layer and Its Structural Characterization

The poly(o phenylenediamine) molecularly imprinting nanometer layer with high sensitivity to phosphorus agent sarin has been prepared by electro polymerization. Quartz crystal micro balance verifies the existence of molecularly imprinting. Cyclo voltammetry,atomic force microscope and X ray photoelectron spectroscopy have been used to characterize these films. The results show that the layer thickness is only 20 nm,and the film surface is hollow protruding,lax and has many holes. XPS further certifies that molecularly imprinting mostly influence the three dimension arrangement of polymers,but the chemical composition of polymers does not change. The poly(o phenylenediamine) molecularly imprinting nanometer layers have wide application foreground on the selective detection to the nerve agent sarin.