摘要
以乙酰丙酮(acac)和2,2′-联吡啶(2,2′-bipy)作为修饰剂,用NaOH溶液调节pH值,采用溶胶沉淀法合成得到修饰纳米氧化铽甲醇溶胶。用荧光光谱、紫外-可见光谱和高分辨透射电镜(HRTEM)对纳米氧化铽甲醇溶胶的光学特性和粒子结构进行表征。研究结果表明,被acac和2,2′-bipy修饰的氧化铽甲醇溶胶能在545nm附近发射出很强的Tb3+的特征绿色荧光;透射电镜及选区衍射(SED)结果表明溶胶中的纳米粒子为氧化铽,其平均粒径只有6nm。
Colloids of the coordinated terbium oxide are prepared by colloids precipitation method with ligands of acetylacetone （acac） and 2,2-bipyridine and pH regulating agent of NaOH solution. The fluorescent properties and structure of nanoparticles of the coordinated terbium oxide are characterized by fluorescence spectra, ultravioletvisible spectra and high-resolution transmission electron microscopy （HRTEM）. The results show that the nano terbium oxide particles coordinated by acac and 2,2＇-bipy can radiate intense green light under ultraviolet irradiation, and their fluorescence spectrum presents typical characteristic emission peaks of Tb3＋ ions. The HRTEM and selected area electron diffraction （SED） results show that the nanooarticles are terbium oxide with the aizo of 6 nm
出处
《激光与光电子学进展》
CSCD
北大核心
2012年第3期110-115,共6页
Laser & Optoelectronics Progress
基金
国家自然科学基金(50272014)
福建省自然科学基金(0710001)
福建省教育厅资助项目(JB10010)资助课题
关键词
材料
非晶光学材料
溶胶沉淀法
氧化铽溶胶
荧光
配位修饰
materials
non-crystalline optical material
colloids precipitation method
terbium oxide colloid
fluorescence
coordination
