SIOC English
化学学报
高级检索

化学学报 ›› 1990, Vol. 48 ›› Issue (7): 648-652. 上一篇    下一篇

研究论文

晶场效应和化学键性质对Eu^2+光谱结构的影响

满石清;石春山   

  1. 中国科学院稀土化学与物理开放实验室
  • 发布日期:1990-07-15

Efect of crystal-field and bonding properties on spectral structure of Eu2+

MAN SHIQING;SHI CHUNSHAN   

  • Published:1990-07-15

PDF

431

合成了掺Eu^2+的单一氟化物五种和复合氟化物六种; 研究了Eu^2+在基质中的跃迁发射随晶场、化学键性质变化的规律。 在一些低配位数、强晶场的体系中观察到了Eu^2+的f→f跃迁发射, 首次在室温下,观察到单一氟化物AlF3:Eu^+中的f→f跃迁发射。

关键词: 氟化物, 铕化合物, 化学键, 跃迁, 晶场理论, 荧光分光光度法

Five Eu2+-doped simple fluorides and 6 Eu2+-doped complex fluorides were synthesized by solid reactions. The strength of the crystal-field at the sites of Eu2+ ion, and the degree of covalence of Eu-F bond in these hosts are discussed. The f-f transition emission of Eu2+ ion was observed in the hosts which has lower coordination no. and strong crystal-field. The f-f transition emission of Eu2+ ion was observed for the 1st time in the simple fluoride AlF3.

Key words: FLUORIDE, EUROPIUM COMPOUNDS, CHEMICAL BONDS, TRANSITION, CRYSTAL FIELD THEORY, FLUOROSPECTROPHOTOMETRY

中图分类号: