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Reference type: Journal
Authors: Cui A, Singh A, Kaplan DL
Article Title: Enzyme-based molecular imprinting with metals.
Publication date: 2002
Journal: Biomacromolecules
Volume: 3
Issue: (6)
Page numbers: 1353-1358.
DOI: 10.1021/bm025615y

Abstract: Aromatic monomers with Various functional groups were utilized in horseradish peroxidase-catalyzed polymerization reactions with metal ions Cu(II), Ni(II), and Fe(III) as imprinting templates. The approach described combines molecular imprinting with enzymatic free radical coupling. Selectivity in metal ion affinity between the various polymer products was assessed and found to depend on the metal used in the imprinting process, using aniline, tyramine, and phenol as monomers. Selectivity in binding metals was found when polymers imprinted With copper, nickel, or iron were screened against the three metals, with preference for the metal used in the imprinting step. A model for the structural features of the putative imprinted polymers is proposed based on electron paramagnetic resonance, NMR, and IR analysis. Specific potential benefits to this imprinting method include reactivity with a wide range of aromatic monomers to provide more diverse options for; molecular recognition with the target analyte and thus polymer products with higher selectivity, mild reaction conditions for the enzyme polymerization step to enable imprinting against labile substrates, imprinted polymeric products that contain conjugated backbones that could be suitable for electronics- based biosensor applications, and a potential for combinatorial selection to further enhance specificity


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