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- W2044654058 abstract "AbstractCatechol-containing biomolecules and related synthetic materials are of interest for a broad range of applications. Our group has been interested in the potential of eumelanin, a catechol-containing biomaterial and the black-to-brown pigment in humans, and synthetic eumelanin analogues for water purification applications. In an attempt to apply the strategy of molecular imprinting towards lead-binding synthetic eumelanin coatings, we developed a PbO2-mediated synthesis that was subsequently tested with a number of catechols in addition to the eumelanin and polydopamine monomers l-dopa and dopamine. Although this strategy did not provide significant improvements in affinity or selectivity, we found that the PbO2-mediated oxidative polymerisation of 1,2-dihydroxybenzene generates a coating that darkens visibly upon binding Pb2+ and other metal ions. Oxidative polymerisation of catechol with sodium periodate also yields a coating with this colorimetric response. Of eight metal ions tested, the coatings are most responsive to Pb2+ and Cu2+, as analysed by quantitative colorimetry. With further optimisation, these coatings could prove useful for the colorimetric sensing of metal ions.Keywords:: catecholmelaninmolecular imprintingcolorimetricmetal ions AcknowledgementsAcknowledgement is made to the Donors of the American Chemical Society Petroleum Research Fund for partial support of this research. We thank Research Corporation (Cottrell College Science Award) and Oberlin College for additional support. We thank Dr Anna Mapp and members of the Mapp lab at the University of Michigan, where a portion of this work was performed, and acknowledge the Oberlin-Kalamazoo-University of Michigan collaborative programme for partial support of this work. We thank Chris Boyd and Christa Wagner (Oberlin College) for preliminary experiments, and Lauren Choban, Jessica Hubert, Ryan Hunter, Edmund Korley and Sophie Lewandowski (Oberlin College) for ongoing experiments related to those reported here." @default.
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- W2044654058 date "2013-11-21" @default.
- W2044654058 modified "2023-10-14" @default.
- W2044654058 title "Colorimetric metal ion binding of catechol-based coatings inspired by melanin and molecular imprinting" @default.
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- W2044654058 doi "https://doi.org/10.1080/10610278.2013.852672" @default.
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