Eu_(1-x)La_x(Phen)_3的制备、表征及La^(3+)对Eu(Phen)_3荧光性能的影响  

Preparation,characterization of Eu_(1-x)La_x(Phen)_3 and influence of La^(3+) on Eu(Phen)_3 fluorescence properties

作　　者：孙丽[1,2] 孙晶[1] 于文生[1] 张敏[1] 刘慧敏[1] 张鑫洋[1] 

机构地区：[1]长春理工大学化学与环境工程学院,吉林长春130022 [2]吉林省松原市前郭县第二高级中学,吉林松原138000

出　　处：《化工科技》2015年第6期31-34,共4页Science & Technology in Chemical Industry

基　　金：预研基金资助项目(BQ0302)

摘　　要：以La_2O_3、Eu_2O_3和邻菲罗啉为原料合成了Eu_(1-x)La_x(Phen)_3,并利用红外光谱、扫描电镜、激发和发射光谱对样品的结构、形貌及荧光特性进行了表征。红外光谱分析表明,Eu_(1-x)La_x(Phen)_3中phen的2个氮原子与稀土离子呈双齿配位,形成螯环。扫描电镜观察发现,Eu_(1-x)La_x(Phen)_3的结晶态样品呈现四方棱柱结构。激发和发射光谱分析表明,在357nm波长激发下,Eu(Phen)_3与Eu_(1-x)La_x(Phen)_3均在614nm处有发射峰,随着La掺入量x的增加,Eu_(1-x)La_x(Phen)_3在614nm处的发射峰强度增强,说明La对Eu的发光具有增强作用,并且当n(Eu)∶n(La)=1∶1时,Eu_(1-x)La_x(Phen_)3在614nm处的发射峰强度达到最强。Eu_（1-x）La_x（Phen）_3 were prepared,using La2O3、Eu2O3 and phen as raw materials. The structure,morphology and fluorescence properties of the samples were analyzed through IR,SEM and fluorescence spectroscopy. IR spectra presented that the bidentate ligandin is formed between two ni- trogen atoms and rare earth ions in Eu_（1-x）La_x（Phen）_3 SEM showed that Eu_（1-x）La_x（Phen）_3 crystal dis- played the square prism structure. The fluorescence spectra manifested that under the excitation of 357 nm,Eu（Phen）a and Eu_（1-x）La_x（Phen）_3 have same emission peak with 614 nm. As the amount of Laa＋ in- creasing,the fluorescence emission intensity of the Eu_（1-x）La_x（Phen）_3 was increased at 614 nm,when the mol ratio of La3＋/Eu3＋ is 1 ： 1,the fluorescence emission intensity was the stongest.

关 键 词：稀土 Eu1-xLax(Phen)3 荧光特性 

分 类 号：O614.33[理学—无机化学]