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Reference type: Journal
Authors: Ul-Haq N, Khan T, Park JK
Article Title: Enantioseparation with D-Phe- and L-Phe-imprinted PAN-based membranes by ultrafiltration.
Publication date: 2008
Journal: Journal of Chemical Technology & Biotechnology
Volume: 83
Issue: (4)
Page numbers: 524-533.
DOI: 10.1002/jctb.1827

Abstract: BACKGROUND: Solute rejection by a molecularly imprinted membrane was observed for the first time. Enantioselective poly[(acrylonitrile)-co-(acrylic acid)] membranes were prepared by a wet-phase inversion method using D-phenylalanine (D-Phe) and L-phenylalanine (L-Phe) as templates, separately, in order to compare the imprinting effects of these isomers using an ultrafiltration experiment. RESULTS: Recognition sites were successfully created in the prepared membranes, which had a nanoporous structure. The rejection selectivities of 0.13 and 0.28, adsorption selectivities of 2.25 and 2.40 and permselectivities of 1.94 and 2.08 were achieved for the D- and L-Phe-imprinted membranes, respectively, after 16 mL (34 min) of ultrafiltration. CONCLUSION: Solute rejection by a molecularly imprinted membrane was selective. The performance characteristics of both the D- and L-Phe-imprinted membranes were different. Thus, the selection of an appropriate stereoisomer as a template plays an important role in the imprinting of membranes with regard to chiral resolution by ultrafiltration. Copyright 2008 Society of Chemical Industry
Author keywords: molecularly imprinted membrane, amino acid, recognition sites, optical resolution, chiral separation


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