作　　者： ; ; ;

机构地区： 中山大学化学与化学工程学院

出　　处： 《中山大学学报（自然科学版）》 2005年第3期53-57,共5页

摘　　要： 使用了不同的功能单体和致孔剂,制备了一系列的以双酚A为模板的分子烙印聚合物。发现以2_Vpy做功能单体,以甲苯做致孔剂的分子烙印聚合物对底物有很好的结合能力。在不同的致孔剂中,双酚A与功能单体形成复合物而导致它的质子的化学位移的变化幅度不同,表明形成的复合物的稳定程度不同,相对应的分子烙印聚合物的选择性结合底物的能力不同。Scatchard方程研究表明在研究的浓度范围内在聚合物中形成了一类等价的结合位点,结合位点对模板分子的最大表观结合量为148.1μmol·g-1;结合位点的平衡离解常数2.81mmol L。研究表明,改变溶解底物的溶剂,会严重影响聚合物对底物的结合能力。 A series of bisphenol A imprinted polymers were prepared using different functional monomers and porogens. The result shown that the polymer prepared by using 2_vinylpyridine as the functional monomer and toluene as the porogen exhibited a higher binding capacity for bisphenol A. Complexes formed between bisphenol A and functional monomer which lead to the change of chemical shift of ()~1H NMR spectrum.The change extenge extend altered with different porogens.This means that the stability of the complex was different,which result in different selectively binding capability between substrate and molecular imprinting polymer(MIP).Scatchard analysis showed that one equal class of binding sites was formed in the imprinted polymer under the studied concentration range. The dissociation constant and the apparent maximum number of the binding sites were 2\^81 mmol/L and 148\^1 μmol\5g^(-1), respectively. It was observed that the change of the solvent would influence the binding capacity of the polymers greatly.

关 键 词： 分子烙印 双酚 乙烯吡啶 结合能力 化学位移

领　　域： [理学] [理学]