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Reference type: Journal
Authors: Petcu M, Karlsson JG, Whitcombe MJ, Nicholls IA
Article Title: Probing the limits of molecular imprinting: strategies with a template of limited size and functionality.
Publication date: 2009
Journal: Journal of Molecular Recognition
Volume: 22
Issue: (1)
Page numbers: 18-25.
DOI: 10.1002/jmr.918

Abstract: A series of polymers molecularly imprinted with the general anaesthetic propofol were synthesized using both semi- and non-covalent approaches. The polymers were evaluated with respect to template rebinding in both aqueous and organic media. In aqueous media, the observed propofol binding in these polymer systems was largely hydrophobic and non-specific in nature. In non-polar solvents such as hexane, electrostatic (hydrogen bonding) interactions dominate resulting in some selectivity. The implication of these results, in conjunction with those obtained using structures of similar size in other studies, is that propofol, a template possessing limited functionality and size, appears to define the lower limit for template size and degree of functionalization that can be used for the creation of ligand-selective recognition sites in molecularly imprinted polymers. Furthermore, studies with alternative ligands indicate that the steric crowding of a ligand's functionality to the polymer contributes to the extent of polymer-ligand recognition. Copyright 2008 John Wiley & Sons, Ltd
Template and target information: propofol, 2,6-diispropylphenol
Author keywords: molecular imprinting, propofol, sacrificial spacer, radioligand binding, NMR

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