title: Synthesis and evaluation of a selective molecularly imprinted polymer for the contraceptive drug levonorgestrel.
abstract: A molecularly imprinted polymer (MIP) has been prepared using levonorgestrel (LEV) as template. The polymer was synthesised in a non-covalent approach using methacrylic acid (MAA) as functional monomer and ethylene glycol dimethacrylate (EGDMA) as cross-linking monomer via a free radical polymerization. An equivalent blank polymer was also synthesised in the absence of the template compound. Batch adsorption experiments were used to evaluate the binding affinity of the imprinted polymer. After packing MIP into a stainless steel column (150 mm x 4.6 mm i.d.), retention and elution of the template and related compounds were evaluated by high-performance liquid chromatography (HPLC). This LEV imprinted polymer was further applied for selective solid phase extraction (SPE) of LEV from human serum. It was confirmed that the binding ability of the prepared MIP for LEV was essentially sufficient in the presence of other compounds coexisting in serum sample. Therefore, as a selective and efficient solid phase material, LEV imprinted polymer has a high potential application in analysis of this steroidal hormone in clinical purposes.
authors.affiliation: Department of Chemistry, Faculty of Science, Islamic Azad University, Karaj Branch, Karaj, Iran. chemafshin@gmail.com
authors.forename: Afshin Rajabi
authors.initials: AR
authors.lastname: Khorrami
authors.forename: Shima
authors.initials: S
authors.lastname: Mehrseresht
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D003271:Contraceptive Agents, Female / Q000737:chemistry*; D016912:Levonorgestrel / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet
chemical_list: D003271:Contraceptive Agents, Female; D011108:Polymers; D016912:Levonorgestrel