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Reference type: Journal
Authors: Yoshikawa M, Fujisawa T, Izumi J, Kitao T, Sakamoto S
Article Title: Molecularly imprinted polymeric membranes involving tetrapeptide EQKL derivatives as chiral-recognition sites toward amino acids.
Publication date: 1998
Journal: Analytica Chimica Acta
Volume: 365
Issue: (1-3)
Page numbers: 59-67.
DOI: 10.1016/S0003-2670(98)00092-0

Abstract: Molecularly imprinted polymeric membranes, bearing the tetrapeptide derivative HGlu(OBzi)-Gln-Lys(4-Cl-Z)-Leu-CH2-, were prepared during the membrane preparation (casting) process in the presence of print molecule Boc-L-Trp or Ac-L-Trp. The membranes thus obtained showed adsorption selectivity toward the print molecule and its family. The tetrapeptide derivative in the imprinted membranes preferentially recognized an L-amino acid to the corresponding D-isomer. The affinity constant between Ac-L-Trp and the chiral recognition site was determined as 2.1 x 10(4) mol(-1) dm(3) from the adsorption isotherm of Ac-L-Trp. Enantioselective electrodialysis was attained with such a membrane, the L-isomer permeating in preference to the D- isomer. (C) 1998 Elsevier Science B.V

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