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Reference type: Journal
Authors: Zhang ZH, Zhang HB, Hu YF, Liu L, Li H, Yao SZ
Article Title: Preparation and characterization of stereoselective L-histidine imprinted microspheres.
Publication date: 2008
Journal: Chemical Journal of Chinese Universities
Volume: 29
Issue: (10)
Page numbers: 1941-1946.
Alternative URL: http://www.cjcu.jlu.edu.cn/CN/abstract/abstract10906.shtml

Abstract: Stereoselective L-histidine imprinted microspheres (MIMs) were synthesized with precipitation polymerization using L-His as the template, methacrylic acid (MAA) as the functional monomer, ethylene glycol dimethacrylate (EGDMA) as the cross-linker, 2, 2'-azobis-isobutyronitrile (AIBN) as the initiator, and water-acetonitrile microemulsion as dispersant. Equilibrium binding experiment and HPLC experiment were conducted to discuss the binding performance and the results show that two kinds binding sites is observed for the imprinted microspheres binding to the template with the maximum apparent binding constant 33.04 and 24.16 μmol/g, respectively. These imprinted microspheres exhibit an excellent stereoselectivity for L-histidine with the selective factor 2.14. The properties of polymers were characterized by IR spectra, thermalgravities analysis, and XRD, and the results indicate that the MIMs exhibit an excellent stability
Template and target information: L-histidine
Author keywords: high performance liquid chromatography, L-Histidine, molecularly imprinted microsphere, precipitation polymerization

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