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Reference type: Journal
Authors: Kubo H, Player TN, Shinoda S, Tsukube H, Nariai H, Takeuchi T
Article Title: Chiral recognition of octadentate Na+ complex with tetra-armed cyclen by molecularly imprinted polymers.
Publication date: 2004
Journal: Analytica Chimica Acta
Volume: 504
Issue: (1)
Page numbers: 137-140.
DOI: 10.1016/S0003-2670(03)00952-8

Abstract: Chiral indanyl substituted tetra-armed cyclens (TAC) formed octadentate complexes with Na+. Since their four side arms stand up and are bundled to form quadruplicated helical structures, they can have Delta- or Lambda-types enantiomers based on complex helicity. In this study, TAC-imprinted polymers were prepared using an ion-pair complex of the sodium salt of (S)-indanyl substituted TAC (TAC(S)) and 2-sulfoethyl methacrylate as a template, and ethylene glycol dimethacrylate as a cross-linker. Affinity of the obtained polymers for the TAC Na+ complexes was evaluated chromatographically and the imprinted polymer gave longer retention time for the template than that for its antipode where the separation factor was given to be 1.29-1.45 under the NaOH concentrations of 10-25 mM in the eluent. These results indicate that the imprinted polymer could discriminate helix structures of TAC Na+ complexes. (C) 2003 Elsevier B.V. All rights reserved

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