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Reference type: Journal
Authors: Andersson HS, Koch-Schmidt AC, Ohlson S, Mosbach K
Article Title: Study of the nature of recognition in molecularly imprinted polymers.
Publication date: 1996
Journal: Journal of Molecular Recognition
Volume: 9
Issue: (5-6)
Page numbers: 675-682.
DOI: 10.1002/(SICI)1099-1352(199634/12)9:5/6<675::AID-JMR320>3.0.CO;2-C

Abstract: In the present study molecularly imprinted polymers (MIPs) were prepared against a series of structurally related compounds containing various numbers of pyridyl groups, The goal, to increase understanding of the mechanisms of recognition in MIPs, was achieved by comparing the patterns of retention of the imprinted compounds on the different MIPs when related to a blank (non-imprinted) polymer in a high performance liquid chromatography system, Furthermore, frontal analysis was carried out on three polymers: a blank, a pyridine- imprinted and a 4,4'-bipyridyl-imprinted polymer, to evaluate the number (B-t), average specificity and strength (dissociation constant; K-diss) of the recognition sites, The K-diss values of pyridine on the different polymers were in the range 0.10-0.12 M, and the amount of imprinted binding sites (B-t) 0.10-0.12 mmol/g, K-diss values of 4,4'-bipyridyl were approximately 0.06 M, with B-t values equal to the above, except for in the anti-4,4'-bipyridyl polymer where the K-diss was determined to be 0.02 M and B-t 0.07 mmol/g, From the results it can be concluded that multiple additive weak interactions dominate the recognition of the template molecules in these imprinted polymers

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