摘要
本文通过水热法合成了含有3种不同稀土离子的层状稀土氢氧化物(Gd0.5Tb0.5-xEux)2(OH)5NO3.nH2O,并选择有机物水杨酸(HSA)作为敏化剂,通过在水热条件下的离子交换反应,成功将其以有机阴离子形式与层状稀土氢氧化物插层组装获得有机-无机杂化荧光材料(SA--LRHs∶xEu)。荧光性质测定表明,SA-通过有效的能量转移增强了Tb3+的特征绿色荧光发射,随着Eu3+含量的增加,Eu3+的特征红色荧光发射随之增强,而Tb3+的特征绿色荧光发射随之减弱。在此基础上,将发光颜色可调的有机-无机荧光材料与聚甲基丙烯酸甲酯(PMMA)复合组装出透明的荧光薄膜。
Herein, the organic-inorganic hybrid phosphors has been designed and assembled by the intercalation of salicylic acid (HSA), as sensitizer, into the layered rare-earth hydroxides (LRHs) with the compositions of (Gdo.sTbo.5-xEux)2(OH)sNO3 nH20, through ion-exchange reaction under hydrothermal condition. More interestingly, the luminescence color of the SA--LRHs :xEu can be easily tuned from green to red due to the energy transfer from the Tb3+ to Eu3+ ions by changing the doping concentration of activator ions. In addition, the transparent and color-tunable luminescent film devices can be fabricated facilely with the use of SA--LRHs :xEu hybrids and polymethyl methacrylate (PMMA).
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2013年第8期1663-1667,共5页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.20931003
21071068)
国家自然科学基金委员会人才培养基金(No.J1103307)资助项目
关键词
层状稀土氢氧化物
有机敏化剂
插层组装
荧光薄膜
layered rare earth hydroxide
organic sensitizer
intercalation and assembly
luminescent films