Journal
POLYMER
Volume 52, Issue 12, Pages 2485-2491Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2011.04.002
Keywords
Molecular imprinting; Benzoboroxole; Fructose
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Covalent molecularly imprinted polymers against D-fructose employing 5-methacrylamido-2-hydroxymethylphenylboronic acid as functional monomer and trimethylpropane trimethacrylate (TRIM) as the crosslinking agent were prepared by a conventional radical bulk polymerization (MIP-BX(Fru)). Batch binding studies for fructose in aqueous buffers containing 10% methanol revealed that the binding capability of MIP-BX(Fru) is paramount compared to a MIP prepared with vinylphenylboronic acid MIP-BA(Fru). Especially, at the biological important pH-value of 7.4 the rebinding of fructose to the MIP-BX(Fru) is with 60 nmol per mg polymer about 3.2 higher compared to the MIP-BA(Fru). A pinacol imprinted polymer was also investigated and showed in case of MIP-BX still an imprinting of 1.7 at pH 7.4 whereas MIP-BA did not show a difference. Cross-reactivity studies at pH 7.4 show the shape-selectivity of the MIP-BX(Fru) in the order of L-fructose, sorbitol, glucose and sucrose. (C) 2011 Elsevier Ltd. All rights reserved.
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