Key Laboratory of Functional Inorganic Material Chemistry (MOE), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, P. R. China
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Dalton Trans., 2013,42, 11537-11547
02 Mar 2013,
29 May 2013
First published online
30 May 2013
A new β-diketone, 5,6-dimethoxy-2(2,2,2-trifluoroethyl)-1-indone (5,6-DTFI), has been designed and synthesized. Two series of four 5,6-DTFI Sm3+ and Eu3+ complexes, namely, Eu(5,6-DTFI)3(H2O)2 (1), Eu(5,6-DTFI)3(Phen) (2), Sm(5,6-DTFI)3(H2O)2 (3) and Sm(5,6-DTFI)3(Phen) (4) (Phen = 1,10-phenanthroline), have been isolated. X-ray diffraction analysis reveals that all complexes 1–4 are of mononuclear structures. Luminescent and phosphorescent spectra of complexes 1–4 show strong characteristic emissions of the corresponding Eu3+ and Sm3+ ions. Upon complexes 1 and 2 were doped into the poly(methylmethacrylate) (PMMA) forming the films, the PMMA polymermatrix acting as a co-sensitizer for Eu3+ ion enhances the luminescent lifetimes, overall quantum yields and the thermal stability in comparison with the precursor complexes.
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