Synthesis and luminescent properties of terbium complex containing 4-benzoylbenzoic acid for application in NUV-based LED  

作　　者：孙乃群 赵希瑾 杨亚敏 李利平 张爱琴 贾虎生 刘旭光 

机构地区：[1]Key Laboratory of Interface Science and Engineering in Advanced Materials of Taiyuan University of Technology, Ministry of Education [2]College of Materials Science and Engineering, Taiyuan University of Technology [3]College of Textile Engineering, Taiyuan University of Technology [4]College of Chemistry and Chemical Engineering, Taiyuan University of Technology

出　　处：《Journal of Rare Earths》2016年第2期130-136,共7页稀土学报（英文版）

基　　金：supported by the Program for International Science&Technology Cooperation Program of China(2012DFR50460);the National Natural Science Foundation of China(21471111);Shanxi Provincial Key Innovative Research Team in Science and Technology(2012041011);Natural Science Foundation of Shanxi Province(2013011013-2);Program for Science and Technology Development of Shanxi(20140321012-01);Excellent Scientist Fund in Neimenggu,China

摘　　要：A novel Tb(III) ternary complex Tb(p-BBA)3MAA was synthesized with 4-benzoylbenzoic acid (p-BBA) and methacrylic acid (MAA) as ligands. The complex was characterized by IR, UV-visible, thermogravimetric analysis and fluorescence spectroscopy. Monitored at 544 nm, the complex displayed wide and strong excitation band at 300–400 nm, which matched well with the 365 nm-emitting UV chip. The complex exhibited excellent green emission at 544 nm (5D4→7F5 transition of Tb3+) under an excitation at 365 nm. Besides, the complex showed high thermal stability. Its intramolecular energy transfer process was further discussed. Fur-thermore, the complex also had higher fluorescence lifetime (1.38 ms) and higher quantum yield (0.372). Finally, electroluminescent properties indicated that when used to fabricate LED with 365 nm UV chip (power efficiency is 18.6 lm/W), the complex remained its favorable optical performance. These results implied that Tb(p-BBA)3MAA could be used as a green phosphor for NUV-based white LED.A novel Tb(III) ternary complex Tb(p-BBA)3MAA was synthesized with 4-benzoylbenzoic acid (p-BBA) and methacrylic acid (MAA) as ligands. The complex was characterized by IR, UV-visible, thermogravimetric analysis and fluorescence spectroscopy. Monitored at 544 nm, the complex displayed wide and strong excitation band at 300–400 nm, which matched well with the 365 nm-emitting UV chip. The complex exhibited excellent green emission at 544 nm (5D4→7F5 transition of Tb3+) under an excitation at 365 nm. Besides, the complex showed high thermal stability. Its intramolecular energy transfer process was further discussed. Fur-thermore, the complex also had higher fluorescence lifetime (1.38 ms) and higher quantum yield (0.372). Finally, electroluminescent properties indicated that when used to fabricate LED with 365 nm UV chip (power efficiency is 18.6 lm/W), the complex remained its favorable optical performance. These results implied that Tb(p-BBA)3MAA could be used as a green phosphor for NUV-based white LED.

关 键 词：4-benzoylbenzoic acid Tb(III) complex fluorescence quantum yield lifetime rare earths 

分 类 号：TQ422[化学工程] TN312.8[电子电信—物理电子学]