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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 32, Number 3
BKCSDE 32(3)
March 20, 2011 

The Soft Material Obtained from an Europium (III)-Containing Ionic Liquid
Huifang Shao, Yige Wang, *Dan Li
Ionic liquid, Europium (III), Luminescence, Organic ligand
The addition of organic ligand (β-diketone or heterocyclic compound) to the europium (III)-containing ionic liquid resulted in bright luminescent soft materials with the molar ratio of europium/ionic liquid (IL)/ligand being 1:3:1 that exhibit bright red light under UV lamp. The luminescent properties such as emission features and lifetime of 5D0 Eu3+ excited level are dependent on the organic ligands. The materials were characterized by FT-IR and luminescence spectroscopy. The data shows that at least parts of the ILs (carboxylic acid) are replaced with β-diketone ligand rather than the formation of europium complex with the molar ratio of Eu3+: IL: ligand being 1:3:1, while no ILs could be replaced by the heterocyclic ligand such as Bpy and Phen.
973 - 976
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