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Reference type: Journal
Authors: Kempe H, Kempe M
Article Title: Development and evaluation of spherical molecularly imprinted polymer beads.
Publication date: 2006
Journal: Analytical Chemistry
Volume: 78
Issue: (11)
Page numbers: 3659-3666.
DOI: 10.1021/ac060068i

Abstract: The majority of studies on molecularly imprinted polymers has until now been carried out on irregularly shaped particles prepared by grinding of polymer monoliths. The preparation procedures are time- and labor-consuming and produce particles of wide size distributions. To answer the need for fast and straightforward routes to spherical molecularly imprinted polymer beads, we have developed a method comprising the formation of droplets of pre-polymerization solution directly in mineral oil by vigorous mixing followed by transformation of the droplets into solid spherical beads by photoinduced free-radical polymerization. No detergents or stabilizers were required for the droplet formation. Factors influencing the bead synthesis have been investigated and are detailed here. The beads were evaluated in parallel with corresponding irregularly shaped particles prepared from polymer monoliths. Conditions for the synthesis of propranolol-imprinted poly( methacrylic acid-co-trimethylolpropane trimethacrylate) beads in the size range of 1-100 μm in almost quantitative yield are described. The beads were applied as the recognition element in a 96-well plate format radioligand assay of propranolol in human serum
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