Abstract
AbstractOrganic–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 Kn[Lnx(α2‐P2M17O61)(picOH)7]·yH2O (MVI = W and LnIII = La, Ce, Sm, Eu, Tb, Er; or MVI = Mo and LnIII = Eu) were characterized by chemical analysis and spectroscopic methods such as FTIR and FT‐Raman, 31P and 13C MAS NMR spectroscopy. Photoluminescence measurements on the prepared hybrid materials were performed showing the intra‐4fN emission in the visible (EuIII, TbIII compounds) and in the near‐infrared (ErIII 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 K11[Eu2(α2‐P2Mo17O61)(picOH)7]·10H2O.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
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