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Reference type: Journal
Authors: Fitzhenry L, Manesiotis P, Duggan P, McLoughlin P
Article Title: Molecularly imprinted polymers for corticosteroids: impact of polymer format on recognition behaviour.
Publication date: 2013
Journal: Microchimica Acta
Volume: 180
Issue: (15-16)
Page numbers: 1421-1431.
DOI: 10.1007/s00604-013-1034-3

Abstract: A comparative study was performed on different polymeric formats for targeting corticosteroids, focusing on the use of bulk monolith and precipitation polymerisation strategies. Hydrocortisone-17-butyrate was selected as the template and methacrylic acid as the functional monomer, following 1H NMR investigation of the pre-polymerisation mixture. Three different cross-linkers were tested, ranging from moderate to highly hydrophobic. The synthesised bulk and precipitated imprinted polymers were physically characterised by nitrogen sorption and evaluated by means of HPLC and frontal chromatography against a range of template analogues. While some degree of selectivity for the template was achieved for all tested polymers, the ones based on the tri-functional cross-linking monomer trimethylolpropane trimethacrylate exhibited the longest retention for all corticosteroids, especially in the precipitated format, which suggested broader group selectivity
Template and target information: hydrocortisone-17-butyrate, corticosteroids
Author keywords: molecularly imprinted polymers (MIPs), corticosteroids, hydrocortisone, Budesonide, precipitation polymerisation


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