苄嘧磺隆印迹聚合物的波谱分析及吸附性能研究

以苄嘧磺隆为模板分子, α-甲基丙烯酸为功能单体, 三甲氧基丙烷三甲基丙烯酸酯为交联剂, 二氯甲烷为致孔剂, 在20 ℃温度下, 采用紫外引发沉淀聚合方法制备了苄嘧磺隆分子印迹聚合物. 紫外光谱和核磁共振氢谱实验提示了聚合前模板分子与功能单体之间的相互作用主要是分子间氢键, 分子间氢键相互作用能和双氢键的键距由Hyperchem 7.0和Gaussian 03W软件分别计算为: －28.6163 kJ/mol和0.179～0.181 nm. 制备的印迹聚合物在高效液相色谱和吸附动力学实验中都表现出对模板分子有较强的吸附作用.

Spectrum Analysis and Adsorption Characteristics of Bensulfuron- methyl Molecularly Imprinted Polymers

The bensulfuron-methyl molecularly imprinted polymers (MIP) were prepared via a UV-initiated precipitation polymerization method at 20 ℃ temperature using bensulfuron-methyl (BSM) as the template molecule, α-methacrylic acid (MAA) as the functional monomer, trimethylolpropane trimethacrylate (TRIM) as the cross-linker and dichloromethane as the porogen. The cooperative hydrogen bonds of the pre-polymerization solution between the template molecule and the functional monomer were evaluated by UV-spectrum and 1H NMR; the cooperative hydrogen energies (－28.6163 kJ/mol) and the double hydrogen length (0.179～0.181 nm) between the bensulfuron-methyl and α-methacrylic acid were calculated through Hyperchem 7.0 and Gaussian 03W software. The MIP shows high binding capacity to the BSM with HPLC and adsorption kinetics experiments.