摘要
以苏丹红Ⅰ为模板分子,α-甲基丙烯酸为功能单体,乙二醇二甲基丙烯酸酯为交联剂,通过沉淀聚合法合成了高选择性的分子印迹聚合物。通过静态吸附实验研究了聚合物的吸附性能,采用紫外光谱(UV)和核磁共振氢谱(1 H NMR)法研究了聚合物的识别机理。实验结果表明:模板分子和功能单体之间的作用为分子间氢键;红外(IR)光谱研究进一步表明,印迹聚合物通过非共价氢键作用特异性地识别模板分子。
A molecularly imprinted polymer（MIP） with high selectivity was prepared by precipitated polymerization using Sudan red Ⅰ as template molecule, α-methacrylic acid （MAA） as functional monomer and ethylene glycol -methyl acrylate（EGDMA） as cross-linker. The adsorption property of the MIP was evaluated by equilibrium binding experiments, and the recognition mechanism of the MIP was also investigated by UV spectrum and 1H NMR. The results showed that the template molecule could interact with the functional monomer by cooperative hydrogen bonding. Infrared spectra further demonstrated the specific non-covalent hydrogen bonds between MIP and the template molecule.
出处
《分析科学学报》
CAS
CSCD
北大核心
2012年第5期661-664,共4页
Journal of Analytical Science
基金
广东高校优秀青年创新人才培育项目(No.209030)
关键词
苏丹红Ⅰ
分子印迹聚合物
分子识别
Sudan red Ⅰ
Molecular imprinted polymer
Molecular recognition
