分子印迹聚合物的合成及其仿生催化性能的研究

Synthesis of Molecularly Imprinted Polymers and Their Enzyme-mimicking Catalysis

以甲苯硝化反应的产物类似物对硝基苯酚作为模板合成了一系列分子印迹聚合物,采用比表面分析和热分析等现代的分析方法对分子印迹聚合物予以表征。成功地将分子印迹聚合物用于催化NO2硝化反应,探讨合成分子印迹聚合物所用的功能单体种类、交联度等对甲苯的NO2硝化反应位置选择性的影响。结果显示分子印迹聚合物提高了甲苯的对位选择性硝化能力,并且以甲基丙烯酸为功能单体的分子印迹聚合物的对位选择性最好,邻对比为0.89。

A series of molecularly imprinted polymers （MIPS） is synthesized using 4-nitrophenol, a product analogue of the nitration reaction as the template. The imprinted polymers are characterized by means of modem analyses, such as surface and pore analysis. The enzymatic performances of the imprinted polymers are evaluated by catalyzing the nitration reaction of NO2 and molecular 02. The effect of type of functional monomers, as well as degree of cross-linking on the regioselectivity of nitration reaction, is studied. The results indicate that the imprinted polymers synthesized by methacrylic acid as functional monomer exhibite the best regioselectivity, yielding up to 49.6% pare and 44.1% ortho isomer of nitrotoluene.