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Reference type: Journal
Authors: Hung CY, Huang YT, Huang HH, Hwang CC
Article Title: Synthesis and molecular recognition of molecularly imprinted polymer with ibuprofen as template.
Publication date: 2006
Journal: Journal of the Chinese Chemical Society
Volume: 53
Issue: (5)
Page numbers: 1173-1180.
Alternative URL: http://proj3.sinica.edu.tw/~chem/servxx6/files/paper_7344_1233804755.pdf

Abstract: lbuprofen and ketoprofen are chemically similar non-steroidal anti-inflammatory drugs widely used in the treatment of arthritis. Using a molecular imprinting technique, a simple and rapid method was developed for the simultaneous separation and determination of ibuprofen and ketoprofen. Molecular imprinting introduces artificial binding sites into a synthetic polymer matrix, allowing it to exhibit selective rebinding of template molecules. Imprinted polymers can be regarded as an HPLC statio nary phase, important for pharmaceutical analysis. Most molecularly imprinted polymers (MIPs) are synthesized by free radical polymerization of functional monomers, resulting in an excess of crosslinking monomers. In this study, MIPs have been prepared with a ibuprofen template, which can form intramolecular hydrogen bonds. Methacrylic acid (MAA) and ethyleneglycol dimethacrylate (EGDMA) were used as the functional monomer and cross-linker, respectively. Bulk polymerization was carried out at 4 C under UV radiation. The resulting MIP was ground-into 25 ~ 44 μm particles, which were slurry-packed into analytical columns. Template molecules were removed by methanol-acetic acid (9:1, v/v). We evaluated the template binding performance of the MIP using HPLC, with ultraviolet (UV) detection at 234 nm. Chromatographic resolution of ibuprofen and ketoprofen on the MIPs were appraised using buffer/acetonitrile (45/55, v/v) as the mobile phase. Results show that the MIN prepared using ibuprofen as the template had a significant molecular imprinting effect. The method was successfully applied to the separation and analysis of ibuprofen and ketoprofen in pharmaceuticals
Template and target information: ibuprofen
Author keywords: molecularly imprinted polymer, template, ibuprofen, ketoprofen, HPLC

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