Synthesis And Fluorescence Property Of Lanthanide-Polyoxometallate Derivatives Based On [EuW₁₀O₃₆]^9-

With the continuous development of luminescent materials, lanthanide ions playan important role in the solid light-emitting materials. In this paper, we designed andsynthesized based on [EuW10O36]9-lanthanide-polyoxometallate derivatives usingconventional synthetic method and their fluorescent properties were tested.1. Using Na9[EuW10O36] nH2O as raw material, which is respectively reactedwith Ln3+to get three isopolyanions derivatives Ln3EuW10O36nH2O (Ln3+=Eu3+(1),Tb3+(2), Sm3+(3)). The compositions of these compounds were determined byelemental analysis, thermal gravimetric analysis, infrared spectroscopy, powder X-raydiffraction analysis. And the luminescent properties of these compounds werecharacterized.2. Under the premise of constant anion and with careful adjustment of therelative concentration of the lanthanide ions, the doped compoundsEuxTb1-x[EuW10O36] nH2O were obtained, and their luminescence properties arestudied. As increasing the amount of Tb3+incorporated for EuxTb1-x[EuW10O36] nH2O,the fluorescence spectra of doped compound will occur major change. It shows thatusing rare earth cation doping methods can achieve the change of luminescent natureof polyoxometallate compounds.