MIPdatabase
Authors: Basavaraja C, Do YP, Young MC, Hyun TP, Yan SZ, Yamaguchi T, Do SH
Article Title: Dependence of molecular recognition for a specific cation on the change of the oxidation state of the metal catalyst component in the hydrogel network.
Publication date: 2007
Journal: Bulletin of the Korean Chemical Society
Volume: 28
Issue: (5)
Page numbers: 805-810.
Alternative URL: http://newjournal.kcsnet.or.kr/main/j_search/j_download.htm?code=B070518
Abstract: Molecular recognition for a specific cation depending on the change of the oxidation state of the metal catalyst component contained in the hydrogel network has been studied in a self-oscillating hydrogel. The selfoscillating hydrogels are synthesized by the copolymerization of N-isopropylacrylamide (NIPAAm), lead methacrylic acid (Pb(MAA)2), and Ru(bpy)32+ monomer as a metal catalyst component. The recognition for a specific cation (in this study, Ca2+ has been used) is characterized by the adsorbed amount of Ca2+ into the gel. The recognition of the gels for Ca2+ is higher at the temperature below the LCST, and also higher at the oxidized state than at reduced state of the metal catalyst component which corresponds to a more swollen state. Moreover, a propagating wave induced by a periodic change of the oxidation state with the diffusion phenomena in the oscillating hydrogel shows a possibility for temporal and site-specific molecular recognition due to the local swelling of the gel
Template and target information: calcium ion, Ca(II)
Author keywords: BZ reaction, Chemical waves, molecular recognition, Oscillating-hydrogel, Oxidation state
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