Gd／Eu—LRH氨基酸复合体合成及Eu^3＋荧光淬灭  

Synthesis and Quenching Eu^3＋ Luminescence of Gd/Eu-LRH Composite Materials

作　　者：谷庆阳[1] 孙亚红[1] 潘国华[1] 马辉[2] 李新新[2] 马淑兰[1] 

机构地区：[1]北京师范大学化学学院,北京100875 [2]北京师范大学测试中心,北京100875

出　　处：《纳米科技》2013年第2期27-31,共5页

基　　金：国家自然科学基金项目（21271028）,北京市优秀人才培养资助项目（2011A009012000005）

摘　　要：通过均匀沉淀法制备氯型层状钆铕氢氧化物Cl-LRH，（R=Gd0.95Eu0.05），采用离子交换法将层间Cl^-交换为酪氨酸根（Tyr）得到Tyr／LRH复合体，研究其发光性能，Cl-LRH前体出现Eu^3＋的^5Do-^7FJ跃迁发射，对应Eu^3＋特征红光，相比Cl-LRH，Tyr／LRH复合体的发射峰强度大大减弱，表明将Tyr引入LRH层间对Eu^3＋发光有显著淬灭作用。A series of layered hydroxides was the synthesized by homogeneous precipitation method. The interlayerd Cl^- was exchanged with Tyrosine （Tyr）, forming Tyr/LRH composites. Photoluminescence studies indicate that the Cl-LRH precursors have typical Eu^3＋ emission. However,after Tyr ions combining with the LRH layer, the fluorescence intensity of Eu^3＋ emission in Tyr/LRH composites was drastically weakened. The result shows the incorporation of Tyrosine with the layer can sharply quench the Eu^3＋ luminescence.

关 键 词：LRH复合体 酪氨酸 离子交换法 荧光淬灭 

分 类 号：TB33[一般工业技术—材料科学与工程]