Lanthanoid Element Recognition on Surface-Imprinted Polymers Containing Dioleylphosphoric Acid as a Functional Host

UEZU Kazuya, KUWABARA Tamaki, YOSHIDA Masahiro, GOTO Masahiro, FURUSAKI Shintaro

doi:10.2116/analsci.20.1593

Lanthanoid Element Recognition on Surface-Imprinted Polymers Containing Dioleylphosphoric Acid as a Functional Host

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UEZU Kazuya

Department of Chemical Processes and Environments, Faculty of Environmental Engineering, The University of Kitakyushu
KUWABARA Tamaki

Department of Applied Chemistry, Graduate School of Engineering, Kyushu University
YOSHIDA Masahiro

Department of Applied Chemistry and Chemical Engineering, Kagoshima University
GOTO Masahiro

Department of Applied Chemistry, Graduate School of Engineering, Kyushu University
FURUSAKI Shintaro

Department of Applied Life Science, Faculty of Engineering, Sojo University

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抄録

Surface-imprinted polymers have been newly developed for the separation of lanthanoid elements: i.e. La(III), Ce(III), and Dy(III). The imprinted polymers were prepared by surface template polymerization with dioleylphosphoric acid, which exhibits a high affinity to lanthanoids, as a functional host molecule. Separation behavior of La(III), Ce(III) and Dy(III) was investigated with the imprinted polymers, and the imprinting effect of the polymers was evaluated in comparison with that of the unimprinted polymers and also with a conventional solvent extraction method for the same lanthanoid ions. The results indicate that the increase of selectivity for Dy(III) compared to the rest of the ions by the surface-imprinted polymers originated from a synergistic effect of both the affinity with the functional host molecule in nature and the size exclusion by the cavity formed on the polymer surface.