“Weakley型稀土多金属氧酸盐的制备与发光性质”在无机化学实验教学中的应用

采用理论与实验相结合的方法对稀土多金属氧酸盐的发光性质进行探究。首先,通过常规水溶液法合成了一系列稀土多金属氧簇Na9LnW10O36(Ln^3+=Sm^3+、Eu^3+、Tb^3+、Dy^3+);其次,利用粉末X射线衍射、红外光谱、拉曼光谱对簇合物的结构进行表征;最后,利用紫外-可见光谱、荧光光谱对簇合物的光学性质进行考查。通过系统性的实验使学生对稀土簇合物的结构表征以及发光性质有全面、深刻的认识。

Application of "Preparation and Luminescence Properties of Weakley-Type Rare Earth Containing Polyoxometalates" in Inorganic Chemistry Laboratory Teaching

In this paper, the luminescent properties of rare earth containing polyoxometalates were investigated by combining theory with experiment. Firstly, a series of rare earth containing polyoxometalates clusters Na₉LnW₁₀O₃₆ (Ln³⁺=Sm³⁺, Eu³⁺, Tb³⁺, Dy³⁺) were synthesized by the conventional aqueous solution synthesis method. Secondly, the structure of clusters was characterized by powder X-ray diffraction, FTIR spectroscopy and Raman spectroscopy. Finally, the optical properties of the clusters were investigated by UV-Vis spectra and fluorescence spectra. Through systematic experiments, students have a comprehensive and profound understanding of the structure characterization and luminescence properties of rare earth clusters.