New Robust Luminescent Supramolecular Assemblies Based on [Ln(MoO)] (Ln = Eu, Sm) Polyoxometalates.

This work highlights for the first time the photoluminescence (PL) properties of two new [Ln(MoO)] (Ln = Eu, Sm) lanthanide-containing polyoxometalates. Stable crystals of their tetrabutylammonium salts were synthesized, and their structures were confirmed by single-crystal X-ray diffraction. The robustness of the [Ln(MoO)] complexes in an acetonitrile solution has been evidenced by Fourier transform Raman and PL spectroscopies.