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Reference type: Conference Proceeding
Authors: Wang YJ, Wang B
Publication date: 2013
Article title: Preparation of Quercetin-Ni+2 Metal-Complexing Imprinted Polymer and its Recognition Performance Evaluation.
Page numbers: 1697-1700
DOI: 10.4028/www.scientific.net/AMM.275-277.1697 Alternative URL: http://www.scientific.net/AMM.275-277.1697

Proceedings title: Applied Mechanics and Materials
Editors: Li GF, Chen CH
Publisher: Trans Tech Publications
City: Switzerland
Volume number: 275-277
Conference information: Applied Mechanics and Materials I

Abstract: Using the complex of quercetin and Ni+2 (quercetin-Ni+2) as template (quercetin is a kind of flavonoids which are important active ingredients of Chinese herbs.), methacrylic acid as functional monomer and ethylene glycol dimethacrylate as cross-linker, metal-complexing template polymer has been prepared in the mixed solution of methanol and tetrahydrofuran by molecular imprinting technique. The coordination structure and complex ratio between quercetin and Ni+2 were studied by UV-visible spectroscopy, and the ternary complexation of quercetin, Ni+2 and methacrylic acid was verified by similar methods. Selective adsorption experiments for substrates indicated that compared with quercetin's structural analogs (baicalein and baringenin), quercetin-Ni+2 template polymer prepared with appropriate amount of cross-linker exhibited significant adsorption selectivity for quercetin in the presence of Ni+2. The separation factors were 3.915 and 5.443 respectively, which also showed that adsorption capacity was greatly influenced by the amount of cross-linker.
Template and target information: quercetin-Ni(II) complex, quercetin
Author keywords: metal coordination, molecularly imprinted polymer, Quercetin-Ni+2, special recognition

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