合成引发方式对槲皮素-钴(II)配位印迹聚合物结构与性能的影响

doi:10.6023/A1106273

化学学报 ›› 2012, Vol. 70 ›› Issue (07): 921-928 .DOI: 10.6023/A1106273 上一篇下一篇

研究论文

合成引发方式对槲皮素-钴(II)配位印迹聚合物结构与性能的影响

李鸣芳, 王兵

天津工业大学中空纤维膜材料与膜过程省部共建国家重点实验室培育基地天津工业大学环境与化学工程学院天津 300387

投稿日期:2011-06-27 修回日期:2012-02-20 发布日期:2012-04-23
通讯作者: 王兵
基金资助:
天津市自然科学基金重点项目(No. 10JCZDJC21900)资助项目.

Synthesis Approach of Initiation Mode Impacting on the Structure and Properties of Metal-complexing Imprinted Polymers for Quercetin-Co(II)

Li Mingfang, Wang Bing

State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387

Received:2011-06-27 Revised:2012-02-20 Published:2012-04-23
Supported by:
Supported by the Natural Science Foundation of Tianjin (No 10JCZDJC21900)

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摘要/Abstract

以槲皮素-钴(II)的配合物为模板分子, 在强极性甲醇溶剂中分别采用低温光引发和高温热引发聚合制备槲皮素-钴(II)配位印迹聚合物. 紫外-可见光谱分析确定了槲皮素与钴(II)形成配合物的最佳配位比. 根据印迹聚合物的平衡结合量优化功能单体丙烯酰胺用量. 利用红外光谱、透射电镜和平衡结合实验, 考察不同引发方式对聚合物的结构、微观形貌及结合性能的影响. 进一步通过特异吸附容量和印迹指数确定, 低温光引发聚合更适于配位分子印迹聚合物的制备. 同时研究了不同阳、阴离子对印迹聚合物选择识别性的影响. 结果表明光引发的金属配位分子印迹聚合物具有良好的吸附选择性, 印迹指数可达3.919.

关键词: 分子印迹技术, 印迹聚合物, 金属配位键, 槲皮素, 钴(II)

A series of metal-complexing imprinted polymers were prepared in methanol with quercetin-Co(II) complex as template by photo and thermal initiated polymerization (quercetin is a kind of flavonoids which are important active ingredients of Chinese herbs), respectively. The rational ratio between quercetin and Co(II) was investigated by UV-Vis spectroscopy. Assessment of the various polymers revealed that the optimal ratio of functional monomer to template was 4∶1. The molecularly imprinted polymers (MIPs) prepared were characterized by Fourier transform infrared spectra. The effect of initiation mode on the morphology and binding capacity of MIPs were studied by transmission electron microscopy and equilibrium binding experiments. The specific absorption capacity index and the imprint factor were obtained, and it was testified that the lower temperature was more suitable for the polymerization of metal-complexing imprinted polymers. The effect of different cations and anions on binding capacities of the photo-initiated imprinted polymers were studied in detail. The results showed that the photo-initiated metal-complexing imprinted polymers exhibited the good selective adsorption ability to quercetin-Co(II) and the imprint factor was up to 3.919.

Key words: molecular imprinting technique, molecularly imprinted polymer, metal coordination, quercetin, Co(II)

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李鸣芳, 王兵. 合成引发方式对槲皮素-钴(II)配位印迹聚合物结构与性能的影响[J]. 化学学报, 2012, 70(07): 921-928 .

Li Mingfang, Wang Bing. Synthesis Approach of Initiation Mode Impacting on the Structure and Properties of Metal-complexing Imprinted Polymers for Quercetin-Co(II)[J]. Acta Chimica Sinica, 2012, 70(07): 921-928 .

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合成引发方式对槲皮素-钴(II)配位印迹聚合物结构与性能的影响

Synthesis Approach of Initiation Mode Impacting on the Structure and Properties of Metal-complexing Imprinted Polymers for Quercetin-Co(II)

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