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Mono- and dinuclear europium(III) complexes with thenoyltrifluoroacetone and 1,10-phenanthroline-5,6-dione

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Abstract

The N,N′-coordinated mononuclear complex Eu(TTA)3(pdn), prepared by treating 1,10-phenanthroline-5,6-dione (pdn) with Eu(TTA)3(H2O)2 (HTTA = 2-thenoyltrifluoroacetone), may be used as a benzoquinone-like ligand through the oxygen donor atoms in reaction with an additional Eu(TTA)3(H2O)2 precursor to give the dinuclear complex Eu2(TTA)6(pdn). Both the mono- and dinuclear complexes were characterized by elemental analysis, IR, TG, MS, and 1H NMR spectra. The results indicated that they both exhibited a characteristic red emission peak at 616 nm, corresponding to the 5D0 → 7F2 transition of Eu(III) ions under UV excitation. Compared with the mononuclear complex, the dinuclear complex presented better thermal stability and stronger luminescence, which makes it a promising light-conversion molecular device.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (No. 21172049), the Opening Foundation of Zhejing Provincial Top Key Discipline (No. 20121118), and the Special Funds for Key Innovation Team of Zhejing Province (No. 2010R50017).

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Authors and Affiliations

  1. College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China

    Xiao-Fang Zhang & Cun-Jin Xu

  2. Madrid Institute for Advanced Studies of Materials (IMDEA-Materials Institute), C/Eric Kandel, Getafe, Spain

    Jintao Wan

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  1. Xiao-Fang Zhang
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  2. Cun-Jin Xu
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  3. Jintao Wan
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Correspondence to Cun-Jin Xu.

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Zhang, XF., Xu, CJ. & Wan, J. Mono- and dinuclear europium(III) complexes with thenoyltrifluoroacetone and 1,10-phenanthroline-5,6-dione. Monatsh Chem 145, 1913–1917 (2014). https://doi.org/10.1007/s00706-014-1282-x

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  • DOI: https://doi.org/10.1007/s00706-014-1282-x

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