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Abstract: 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
Template and target information: quercetin
Author keywords: molecular imprinting technique, molecularly imprinted polymer, metal coordination, quercetin, Co(II)