摘要
以均苯三甲酸(H3BTC)为配体,在水热条件下合成了稀土掺杂的均苯三甲酸铕系列发光配合物Eu1-xLnxBTC.0.5H2O(Ln=Gd,Y;x=0,0.1,0.3,0.5,0.7,0.9),通过元素分析及化学滴定确定了配合物的组成,用红外光谱对配合物的结构进行了表征,测定了配合物的激发和发射光谱.结果表明Gd3+,Y3+对发光的Eu3+均有荧光增敏作用,且Y3+的作用强于Gd3+.当n(Ln3+)∶n(Eu3+)=7∶3时,配合物的荧光强度最强,在593 nm处Eu0.3Gd0.7BTC.0.5H2O和Eu0.3Y0.7BTC.0.5H2O的荧光强度分别为纯铕配合物的1.62和1.96倍.
Two series of mixed rare earth complexes Eu1-xLnxBTC·0.5H2O（Ln = Gd,Y;x = 0,0.1,0.3, 0,5,0.7,0.9） were synthesized by hydrothermal method. The composing of the complexes was determined by element analyses and EDTA titration method. The complexes were characterized by IR spectra methods. The fluorescence spectra of all the complexes were recorded by using a fluorescence spectrophotometer at room temperature. The results indicated that the fluorescence intensity of the complexes were obviously enhanced when doping rare earth ion of Gd^3＋ or Y^3＋ ,and the different doped ions the sensitized degree was Y〉Gd. When n （Ln^3＋ ）： n （Eu^3＋ ） = 7 ： 3, the fluorescence intensity of Eu1-xLnxBTC· 0.5H2O was the greatest. At 593 nm the fluorescence intensity of Eu0.3Gd0. 7BTC·0.5H2O is 1.62 multiple of EuBTC·0.5H2O, and Eu0.3Y0.7BTC·0.5H2O is 1.96 multiple of EuBTC·0.5H2O.
出处
《河北师范大学学报（自然科学版）》
CAS
北大核心
2008年第2期204-208,共5页
Journal of Hebei Normal University：Natural Science
基金
国家自然科学基金(50472020)
河北师范大学博士基金(103261)
关键词
均苯三甲酸
稀土
掺杂
配合物
荧光光谱
trimesic acid
rare earth
doping
coordination compound
fluorescence spetra
