【摘要】 以对羟基苯甲酸 (p HB)为模板分子 ,以 4 乙烯吡啶 ( 4 Vpy)、丙烯酰胺 (AM)或二者等摩尔比的混合物为功能单体制备了相应的分子印迹聚合物 (Molecularlyimprintedpolymer ,MIP) ,考察了MIP作为高效液相色谱柱固定相时模板分子及其类似物的保留行为 ,同时也考察了在乙腈流动相中添加剂乙酸或水对色谱保留的影响 .三种MIPs的保留大小顺序为 :当功能单体为 4 Vpy时 ,MIP对模板及其类似物的保留最强 ;当以 4 Vpy和AM作为混合单体时 ,保留次之 ;而功能单体为AM时 ,保留最差 .以H2 O作为添加剂时MIP的识别效果要优于以CH3 CO2 H为添加剂的情况 .使用半经验量化法之一 ,PM3方法 ,借助Gaussian 94软件对以p HB与相应的功能单体体系进行了计算模拟 .结果表明 ,聚合前单体与模板复合物结合能量的大小与实验所得的容量因子间具有正相关性 .即结合能越高 ,容量因子k′值越大 .更多还原

【Abstract】 Molecularly imprinted polymers using p-hydroxybenzoic acid (p-HB) as template, 4-vinylpyridine (4-Vpy), acrylamide (AM) and their combination ( 1∶1 molar ratio) as functional monomers were prepared, respectively. The retention of p-HB and its analogues on the polymer based HPLC columns was studied. The order of imprinting effect of the three MIPs with different monomers is: 4-Vpy>(4-Vpy+AM)>AM. The effect of mobile phase additives was also studied. p-HB and its analogues showed better retention when H 2O was used as additive rather than CH 3CO 2H was employed. Furthermore, computational approach using PM3 method with Gaussian 94 software showed a positive correlation between the binding energy of the pre-polymerization complex and the retention factor of p-HB in HPLC experiments.更多还原