Preparation of quercetin-Al (Ⅲ) complex molecularly imprinted polymer andits binding characteristics

OBJECTIVE To synthesize molecularly imprinting polymer(MIP) for quercetin- Al(Ⅲ) complex by using molecular imprinting technique(MIT), and study the characterisation of it. METHODS: A molecularly imprinted polymer(MIP) with special molecule recognition properties of quercetin- aluminum was prepared by thermal polymerization in which quercetin- aluminum as template molecule, α-methacrylic acid (MAA) as functional monomer and ethylene glycol dimethacrylate (EGDMA) as the crosslinker. RESULTS: The interaction between quercetin and Al(Ⅲ)was investigated by UV-Vis spectroscopy, which indicated the interaction among quercetin, Al (Ⅲ) and α-methacrylic acid. The effect of solvent on the morphology and network structure of complex molecularly imprinted polymer and its binding capacity were studied by transmission electron microscopy and equilibrium binding experiments. It turned out that binding capacity was greatly influenced by solvent amount. CONCLUSION: Systematic study on recognition properties of imprinted polymer was carried out and effect of different anions and cations on binding capacities of complex molecularly imprinted polymer was investigated. It was found that complex molecularly imprinted polymer showed good binding characteristics to quercetin in the presence of Al(Ⅲ) .