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Development of two series of solid complexes with intense characteristic fluorescence

LIMIN DONG1,2,* , XIAOQI ZHANG1, JIAN LI1, YANQUN CUI1, QIN LI1, ZHIDONG HAN1,2, QINGGUO CHEN2

Affiliation

  1. College of Materials Science and Engineering, Harbin University of Science and Technology, Harbin, China
  2. Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin, China

Abstract

In this study, Eu 1 x RE x (TLA) RE=Gd, Y; x=0,0.1,0.2,0.3,0.4,0.5,0.6,0.7, 0.8) were obtained by the trimellitic acid, 1,10 phennanthroline and mixed rare earth chloride of EuCl 3 and Gd Cl 3 or YCl 3 in CH 3 CH 2 OH solution. These complexes were characterized by FT IR, TG DTG and SEM. The FT IR spectra showed that the oxygen atoms of c arboxylate and the nitrogen atoms with RE 3+3+, and these complexes have similar structure. The TG DTG analysis showed that these complexes are thermally stable. The fluorescence properties of these complexes were also studied. The results indicate that the c omplexes can emit intense characteristic fluorescence from europium ion. The experimental results showed that the fluorescence intensities of europium complexes were enhanced after doping Gd 3+ or Y 3+3+. A nd the intensity of fluorescence is the best when Eu 3+ Gd 3+ 0.4 : 6 or Eu 3+3+:Y 3+3+=0.8:0.2. Furthermore, among these rare earth ions, Gd 3+ is better than Y 3+ in sensitizing the fluorescence of Eu 3+.

Keywords

Rare earth complexes, Trimellitic acid Doping, Fluorescence intensity.

Citation

LIMIN DONG, XIAOQI ZHANG, JIAN LI, YANQUN CUI, QIN LI, ZHIDONG HAN, QINGGUO CHEN, Development of two series of solid complexes with intense characteristic fluorescence, Optoelectronics and Advanced Materials - Rapid Communications, 7, 1-2, January-February 2013, pp.150-153 (2013).

Submitted at: July 11, 2012

Accepted at: Feb. 20, 2013