摘要
以十六烷基三甲基溴化铵(CTAB)为模板剂,正硅酸乙酯(TEOS)为无机硅源,以及1,3,5 三甲苯(TMB)为加长剂合成了有序介孔分子筛(MCM 41)。选择Eu(DBM)3phen为客体,纳米级介孔分子筛为主体,在氯仿中进行分子组装,制备了具有强发光性能的超分子纳米复合材料Eu(DBM)3phen MCM 41。采用XRD,HRTEM,FTIR和荧光光谱分析等对产物的结构与性能进行了分析。结果表明,在361nm紫外光激发下,Eu配合物在613nm处有较强的荧光,归属于5D0→7F2跃迁峰,且在400～550nm波段有介孔基体的荧光发光。
Nanosized mesoporous molecular sieve MCM-41 was synthesized with tetraethyl orthosilicate (TEOS) as the source of silica and cetyltrimethylammonium bromide (CTAB) as the template. The photoluminescent functional supramolecule (Eu(DBM)_3phen/MCM-41) between the nanosized MCM-41 and Eu(DBM)_3phen was prepared in chloroform, and characterized by XRD, HRTEM, IR and fluorescent spectroscopy. The result shows that a intensive band at 613 nm, which does to the emission of the Eu i.e., ()~5D_0→~7F_2 transition lines, is observed under 361 nm ultraviolet exciation, and a broad band at 400～550 nm is explained as the emission of the mesoporous matrix.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2005年第2期175-178,共4页
Journal of the Chinese Society of Rare Earths
基金
教育部重点实验室开放基金项目(SYSJJ2003 15)资助
关键词
介孔
复合
光致发光
稀土
mesoporous
composite
photoluminescent
rare earths
