University Chemistry ›› 2020, Vol. 35 ›› Issue (1): 70-75.doi: 10.3866/PKU.DXHX201905003

• Chemistry Laboratory • Previous Articles     Next Articles

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

Bin Wang1,2,*(),Zongrui Liu1,2,Limei Duan1,2,Liang Xu1,Suozhu Bai1,Xiaohong Wang1,*()   

  1. 1 College of Chemistry and Chemical Engineering, Inner Mongolia University for the Nationalities, Tongliao 028043, Inner Mongolia Autonomous Region, P. R. China
    2 National Demonstration Center for Experimental Chemistry Education(Inner Mongolia University for Nationalities), Tongliao 028000, Inner Mongolia Autonomous Region, P. R. China
  • Received:2019-05-06 Accepted:2019-06-27 Published:2019-07-08
  • Contact: Bin Wang,Xiaohong Wang E-mail:jluwangbin09@163.com;swtt0401@163.com
  • Supported by:
    内蒙古自治区高等学校"青年科技英才支持计划"(NJYT-18-B22);内蒙古民族大学教育教学研究重点项目(ZD2017003);内蒙古自治区普通高等学校实践教学改革研究项目(内教高函2013年49号)

Abstract:

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.

Key words: Polyoxometalates, Rare earth coordination compounds, Energy transfer, Photoluminescence, Teaching inquiry

MSC2000: 

  • G64