✍ Scribed by Carlos M. Granadeiro; Rute A. S. Ferreira; Paula C. R. Soares-Santos; Luís D. Carlos; Helena I. S. Nogueira
No coin nor oath required. For personal study only.
Organic–inorganic hybrid materials were prepared by combining lanthanide(III) substituted Wells–Dawson anions as inorganic building blocks and 3‐hydroxypicolinate (picOH) as the organic ligand. The organic–inorganic hybrids obtained K__~n~[Ln~x~__(α~2~‐P~2~M~17~O~61~)(picOH)~7~]·__y__H~2~O (M^VI^ = W and Ln^III^ = La, Ce, Sm, Eu, Tb, Er; or M^VI^ = Mo and Ln^III^ = Eu) were characterized by chemical analysis and spectroscopic methods such as FTIR and FT‐Raman, ^31^P and ^13^C MAS NMR spectroscopy. Photoluminescence measurements on the prepared hybrid materials were performed showing the intra‐4f^N^ emission in the visible (Eu^III^, Tb^III^ compounds) and in the near‐infrared (Er^III^ compound) spectral regions, being, in all the cases, sensitized by both the picOH ligand and the polyoxometalate moiety. A maximum quantum yield value of 0.18 was found for K~11~[Eu~2~(α~2~‐P~2~Mo~17~O~61~)(picOH)~7~]·10H~2~O.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
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