Abstract
Vinyl polymers having pendant 3,3′-substituted azobenzene were synthesized. Selective metal extracting ability was found in the photoisomerized polymers having bisiminodiacetic acid groups. The selectivity was large in the azobenzene with directly connected imino-groups rather than those having the methylene chain spacers between the rings and imino-groups. The metal coordination was not strong, so that the complexed cis-isomer thermally recovered to the trans one. The reversible transformation suggests possible applications for photoregulated macromolecular ionophores.
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Nanasawa, M., Nishiyama, T. & Kamogawa, H. Synthesis and Photoregulated Metal Coordination of Azobenzene Polymer Having Ion Binding Sites. Polym J 23, 127–134 (1991). https://doi.org/10.1295/polymj.23.127
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DOI: https://doi.org/10.1295/polymj.23.127