A Series of Carboxylic-Functionalized Ionic Liquids and their Solubility for Lanthanide Oxides

Authors

  • Prof. Dr. Huanrong Li,

    Corresponding author
    1. School of Chemical Engineering and Technology, Hebei University ofTechnology, 300130 Tianjin (P. R. China), Fax: (+86) 22-26564294
    • School of Chemical Engineering and Technology, Hebei University ofTechnology, 300130 Tianjin (P. R. China), Fax: (+86) 22-26564294

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  • Dan Li,

    1. School of Chemical Engineering and Technology, Hebei University ofTechnology, 300130 Tianjin (P. R. China), Fax: (+86) 22-26564294
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  • Dr. Yige Wang,

    1. School of Chemical Engineering and Technology, Hebei University ofTechnology, 300130 Tianjin (P. R. China), Fax: (+86) 22-26564294
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  • Qiaorong Ru

    1. School of Chemical Engineering and Technology, Hebei University ofTechnology, 300130 Tianjin (P. R. China), Fax: (+86) 22-26564294
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Abstract

Herein we report the synthesis of propanoic acid functionalized ionic liquids (ILs) with various lengths of alkyl chain on the imidazole ring. The synthesized propanoic acid functionalized ILs were used to dissolve Eu2O3 (or Tb4O7) due to the formation of europium(III) (or terbium(III)) carboxylate, aimed to get soft luminescent materials combining the properties of ILs and attractive luminescent properties of lanthanide ions. The luminescent behavior of Eu3+ and Tb3+ in the ILs were investigated by luminescence spectroscopy. The affect of the alkyl chain on the luminescent behavior (the asymmetry parameter (R), the lifetime of 5D0, and the 5D0 quantum efficiency) of Eu3+ has been discussed.

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