表面分子印迹聚甲基丙烯酸/二氧化硅对染料木黄酮的吸附和识别特性。
Adsorption and recognition characteristics of surface molecularly imprinted polymethacrylic acid/silica toward genistein.
机构信息
Department of Chemical Engineering, North University of China, Taiyuan 030051, People's Republic of China.
Department of Chemical Engineering, North University of China, Taiyuan 030051, People's Republic of China.
出版信息
J Chromatogr A. 2014 Sep 12;1359:26-34. doi: 10.1016/j.chroma.2014.07.025. Epub 2014 Jul 23.
In this paper, on the basis of surface-initiated graft polymerization, a new surface molecular imprinting technique is established by molecular design. And molecularly imprinted polymer MIP-PMAA/SiO2 is successfully prepared with genistein as template. The adsorption and recognition characteristics of MIP-PMAA/SiO2 for genistein are studied in depth by using static method, dynamic method and competitive adsorption experiment. The experimental results show that MIP-PMAA/SiO2 possesses very strong adsorption affinity and specific recognition for genistein. The saturated adsorption capacity could reach to 0.36mmolg(-1). The selectivity coefficients relative to quercetin and rutin are 5.4 and 11.8, respectively. Besides, MIP-PMAA/SiO2 is regenerated easily and exhibits excellent reusability.
本文基于表面引发接枝聚合，通过分子设计建立了一种新的表面分子印迹技术。并以染料木黄酮为模板，成功制备了分子印迹聚合物 MIP-PMAA/SiO2。通过静态法、动态法和竞争吸附实验，深入研究了 MIP-PMAA/SiO2 对染料木黄酮的吸附和识别特性。实验结果表明，MIP-PMAA/SiO2 对染料木黄酮具有很强的吸附亲和力和特异性识别。其饱和吸附量可达 0.36mmol/g。相对于槲皮素和芦丁的选择性系数分别为 5.4 和 11.8。此外，MIP-PMAA/SiO2 易于再生，具有良好的可重复使用性。
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