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Syntheses and applications of Eu(Ⅲ) complexes of 2-thienyltrifluoroacetonate, terephthalic acid and phenanthroline as light conversion agents

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【Author】 ZHAO Xue-hui HUANG Ke-long JIAO Fei-peng, YANG You-ping, LI Zhao-jian LIU Zhi-guo, HU Shun-qin(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)

【机构】 School of Chemistry and Chemical Engineering Central South University； School of Chemistry and Chemical Engineering； Central South University； Key Laboratory of Green Packaging and Application Biological Nanotechnology of Hunan Province； Hunan University of Technology； Changsha 410083； China Key Laboratory of Green Packaging and Application Biological Nanotechnology of Hunan Province； Zhuzhou 412008； China；

【摘要】 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).更多还原

【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).更多还原

【关键词】 fluorescent properties； europium； terephthalic acid； 2-thienyltrifluoroacetonate；
【Key words】 fluorescent properties； europium； terephthalic acid； 2-thienyltrifluoroacetonate；

【基金】 Project(20576142) supported by the National Natural Science Foundation of China; Project (05B075) supported by the Foundation of Hunan Provincial Education Department for Young Scholars

【文献出处】 Journal of Central South University of Technology ,中南工业大学学报(英文版) , 编辑部邮箱 ,2007年01期

【分类号】O626
【被引频次】3
【下载频次】48

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