稀土配合物Tb(Sal)3·3H2O纳米微晶的制备及发光性质  

Synthesis and Properties Studies of Rare Earth Complexes Tb(Sal)_3·3H_2O Nanocrystallines

作　　者：王冬梅[1,2,3] 刘庆[1] 李媛媛[1] 郑显鹏[1] 徐媛媛[1] 杜斌[1] 

机构地区：[1]济南大学化学化工学院,山东济南250022 [2]山东科技大学化学与环境工程学院,山东青岛266510 [3]山东大学化学与化工学院,山东济南250100

出　　处：《发光学报》2008年第5期869-874,共6页Chinese Journal of Luminescence

基　　金：国家自然科学基金(20577016);国家重大基础研究课题(2002CB613401);国家自然科学基金委杰出青年基金(20325105);山东博士后创新基金(200703055)资助项目

摘　　要：利用化学沉淀法制备了不同粒径的Tb(Sal)_3·3H_2O纳米微晶和Tb(Sal)_3·3H_2O稀土配合物。利用元素分析、红外光谱、热重分析和透射电镜表征了纳米微晶和稀土配合物的结构、热性质和粒径大小。利用荧光激发和发射光谱、紫外光谱探讨了有机配体和中心离子之间的能量传递过程。结果显示Tb(Sal)_3·3H_2O纳米微晶的粒径主要分布在50～250nm区域并且发出较强铽(Ⅲ)离子的特征荧光。这些结果为进一步扩展稀土配合物在发光材料以及磁材料中的应用奠定了基础。In this study, on the base of literatures and traditional method of chemical precipitation process, we optimized the conditions of the experimental and prepared the lanthanide complexes of Tb（Sal） 3·3H2O nano-crystallines with different sizes by the ammonia gas, a series of different proportion ammonia （ 1 ： 1-1 ： 16 ） and different pH buffer solution. In order to compare, the complex Tb（Sal） 3·2H2O were obtained by the traditional chemical precipitation method. Using the elemental analysis, infrared spectrum, TGA-DSC, TEM and SEM, we confirmed that the construction, thermal properties and size of Tb（Sal） 3·3H2O nanocrystalline and Tb（Sal） 3 · 2H2O complex. In addition, fluorescence excitation and emission spectrum, ultraviolet absorption spectrums and the energy transfer process between the organic ligand and center terbium ions were investigated. Our results indicated that the sizes of the nanocrystalline of Tb（Sal） 3·3H2O particle were in the range from 50 to 250 nm, the size of Tb（Sal）3·3H2O nanocrystallines was minimal and well-proportioned by the ammonia gas proportion 1： 16, these nanocrystallines also exhibited terbium ion characteristic luminescence, the luminescence intensity of Tb（ Sal）3·3H2O nanocrystallines prepared with the proportion 1：16 ammonia is the strongest. However,the size of the complex Tb（ Sal）3·2H2O were 03 -0.7μm. These results of terbium complex Tb（Sal） 3 ·3H2O nanocrystallins can provide a basis for further expanding its application in luminescent materials and magnetic materials.

关 键 词：稀土配合物 纳米微晶 发光性质 Tb(Sal)3·3H2O 

分 类 号：O482.31[理学—固体物理] O631[理学—物理]