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Reference type: Journal
Authors: Saatçilar Ö, Satiroglu N, Say R, Bektas S, Denizli A
Article Title: Binding behavior of Fe3+ ions on ion-imprinted polymeric beads for analytical applications.
Publication date: 2006
Journal: Journal of Applied Polymer Science
Volume: 101
Issue: (5)
Page numbers: 3520-3528.
DOI: 10.1002/app.24591

Abstract: We used a molecular imprinting approach to achieve specific metal binding utilizing N-methacryloyl-(L)cysteine methyl ester (MAC) as a metal-complexing ligand. MAC was synthesized using methacryloyl chloride and cysteine methyl ester. Then, Fe3+ was complexed with MAC monomer. Fe3+-imprinted poly(hydroxyethyl methacrylate-N-methacryloyl-(L)-cysteine methyl ester) [poly(HEMAMAC)] beads with average size of 63-140 gm were produced by suspension polymerization. After that, the template ions (i.e. Fe3+ ions) were removed by 0.1M HCI. Fe3+- imprinted beads were characterized swelling studies, FTIR, and elemental analysis. The Fe3+-imprinted beads FTIR, and elemental analysis with a swelling ratio of 72%, and containing 3.9 mmol MAC/g were used in the binding of Fe3+ ions from aqueous solutions, tap water, certified reference serum sample, and real serum sample. Maximum binding capacity, optimum pH, and equilibrium binding time were 107 mu mol/g, pH 3.0, and 30 min, respectively. It was observed that even in the presence of other ions, Fe3+-imprinted beads selectively bound Fe3+ ions with 97% efficiency. Removal of Fe3+ ions from certified reference serum sample was approximately found to be 33%. (c) 2006 Wiley Periodicals, Inc
Template and target information: ferric ion, Fe(III)
Author keywords: molecular imprinting, ion-imprinting polymer, Fe3+ removal

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