自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 14    No. 1    February 2007

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Syntheses and applications of Eu(III) complexes of 2-thienyltrifluoroacetonate,terephthalic acid and phenanthroline as light conversion agents
ZHAO Xue-hui(赵学辉)1,2, HUANG Ke-long(黄可龙)1, JIAO Fei-peng(焦飞鹏)1,YANG You-ping(杨幼平)1, LI Zhao-jian(李朝建)1, LIU Zhi-guo(刘志国)2, HU Shun-qin(胡舜钦)2

1. School of Chemistry and Chemical Engineering, Central South University,Changsha 410083, China;2. Key Laboratory of Green Packaging and Application Biological Nanotechnology of Hunan Province,Hunan University of Technology, Zhuzhou 412008, China

Abstract:A series of europium(Ⅲ) complexes of 2-thienyltrifluoroacetonate (HTTA), terephthalic acid (TPA) and phenanthroline (Phen) were synthesized. The new complexes Eu(TPA)(TTA)Phen and Eu2(TPA)(TTA)4Phen2 were characterized by elemental analysis, IR spectrum, scanning electron microscope and thermal stability analysis. The results show that the thermal stability of the Eu(Ⅲ) complexes increases in the following order: the mononuclear complex Eu(TTA)3Phen, the binuclear complex Eu2(TPA)(TTA)4Phen2, the chain polynuclear complex Eu(TPA)(TTA)Phen. And the formation of the binuclear/polynuclear structure of the new complexes appears to be responsible for the enhancement of their thermal and optical stability. In addition, The fluorescence excitation spectra of these new complexes show more broad excitation bands than that of the complex Eu(TTA)3Phen corresponding to their formation. The enhancement of Eu3+ fluorescence in the new complexes can be observed by the addition of Gd3+. The bright red luminescent plastics can be obtained when the complex EuGd(TPA)(TTA)4Phen2 is added above 0.5% (mass fraction).

 

Key words: fluorescent properties; europium; terephthalic acid; 2-thienyltrifluoroacetonate

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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