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.
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)