山奈素分子印记聚合物的制备及识别性能研究

林产化学与工业 ›› 2011, Vol. 31 ›› Issue (4): 19-24.

山奈素分子印记聚合物的制备及识别性能研究

于兰哲, 曲丹, 贠延滨

北京林业大学环境科学与工程学院, 北京 100083

收稿日期:2010-11-18 修回日期:1900-01-01 出版日期:2011-08-30 发布日期:2011-08-30
通讯作者: 贠延滨,硕士生导师,主要研究领域为膜材料制备与表征及分子印记技术;E-mail:ybyunbj@sohu.com。

Preparation and Application for Kaempferol Molecularly-imprinted Polymers

YU Lan-zhe, QU Dan, YUN Yan-bin

College of Environmental Science and Engineering,Beijing Forestry University, Beijing 100083, China

Received:2010-11-18 Revised:1900-01-01 Online:2011-08-30 Published:2011-08-30

摘要/Abstract

摘要： 采用分子印记技术,以山奈素为模板分子, 4-乙烯基吡啶(4-VP)为功能单体,乙二醇二甲基丙烯酸酯(EDMA)为交联剂,偶氮二异丁氰(AIBN)为引发剂,在CHCl₃-DMF(体积比3∶1)的溶剂体系中合成了含碱性功能基团的分子印记聚合物。通过红外光谱及扫描电镜(SEM)对聚合物进行表征,并研究印记聚合物对山奈素的吸附性能及机理。静态吸附实验结果表明:该分子印记聚合物对山奈素具备良好的吸附能力,经Scatchard模型分析印记聚合物存在对模板分子均一的结合位点,其最大表观吸附量(Q_max)为3 938 μg/g,平衡解离常数(K_D)9.074 mg/L。选择性实验表明,分子印记聚合物在山奈素-芦丁体系中的分离因子达到3.24。

关键词: 分子印记聚合物, 山奈素, 特异识别, 吸附性能

Abstract: A molecularly-imprinted polymer(MIP) was prepared by bulk polymerization, using kaempferol as the template molecule, 4-vinyl pyridine as the functional monomer, and ethylene glycol dimethacrylate as the cross-linker in the solvent system of CHCl₃-DMF(3∶1, volume ratio). The synthesized polymer, i.e.kaempferol-MIP, was analyzed by FT-IR and scanning electron microscopey(SEM). In addition, the adsorption properties and mechanism were studied as well. The experimental results showed that the kaempferol-MIP exhibited a favorable affinity for kaempferol. The Scatchard analysis reveals that there exists a class of homogenous recognition sites in kaempferol-MIP within the range of certain concentration. Apparent maximal combination amount (Q_max) and equilibrium dissociation constant (K_D) were calculated to be 3 938 μg/g and 9.074 mg/L, respectively. The result of selectivity study showed that the selectivity coefficient is 3.24 with respect to kaempferol-rutin system.

Key words: molecularly-imprinted polymer, kaempferol, specific recognition, adsorption properties

中图分类号:

TQ351

于兰哲;曲丹;贠延滨. 山奈素分子印记聚合物的制备及识别性能研究[J]. 林产化学与工业, 2011, 31(4): 19-24.

YU Lan-zhe;QU Dan;YUN Yan-bin. Preparation and Application for Kaempferol Molecularly-imprinted Polymers[J]. , 2011, 31(4): 19-24.

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