大学化学 >> 2020, Vol. 35 >> Issue (1): 70-75.doi: 10.3866/PKU.DXHX201905003

化学实验 上一篇    下一篇

“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

王斌1,2,*(),刘宗瑞1,2,段莉梅1,2,许良1,白锁柱1,王晓红1,*()   

  1. 1 内蒙古民族大学化学化工学院, 内蒙古 通辽 028043
    2 化学国家级实验教学示范中心(内蒙古民族大学), 内蒙古 通辽 028000
  • 收稿日期:2019-05-06 录用日期:2019-06-27 发布日期:2019-07-08
  • 通讯作者: 王斌,王晓红 E-mail:jluwangbin09@163.com;swtt0401@163.com
  • 基金资助:
    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)

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)

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摘要：

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（Ln3+=Sm3+、Eu3+、Tb3+、Dy3+）；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。

关键词: 多金属氧酸盐, 稀土配合物, 能量转移, 光致发光, 教学探究

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