摘要
以邻羟基苯乙酮和苯甲酰氯为原料,经过酯化反应、Fries重排合成了1-(2-羟基苯基)-3-苯基-1,3-丙二酮(HPPPD)及其与铕(Ⅲ)的配合物,并通过IR,热重-差热分析和1H-NMR谱对其进行了表征。研究了酚羟基的引入对稀土配合物发光性能的影响。结果表明该配体与铕(Ⅲ)形成的配合物发出很强的铕(Ⅲ)的特征荧光,并且以邻菲罗啉为第二配体的三元配合物的荧光强度明显高于二元配合物。但是,配体HPPPD与铽(Ⅲ)、钐(Ⅲ)和镝(Ⅲ)等形成的配合物,无论是二元的,还是三元的发光均很弱。这是由于该配体的能级与不同稀土离子能级匹配程度的差别所致。
Using 2＇-Hydroxyacetophenone as a raw material, 1-（ 2-Hydroxyphenyl ）-3-Phenyl-1, 3-Propanedione （HPPPD） was synthesized by esterification reaction and Fries rearrangement reaction. The complexes of HPPPD with europium were also synthesized. The compounds were characterized by IR, thermo-gravimetric analysis and ^1H-NMR. The effects of phenolic hydroxyl on the complexes were studied. luminescence properties of The results show that the complexes emit strong red fluorescence and the fluorescence intensity of the ternary complex is better than that of the duality. But the complexes of HPPPD with Sin（Ⅲ ）, Tb （ Ⅲ ）, Dy （ Ⅲ ）emit weak fluorescence. The phenomenon was interpreted by electron-effect and energy-matching mechanism. Energy transfer mechanism of the luminescence in the complex was discussed.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2005年第5期560-563,共4页
Journal of the Chinese Society of Rare Earths
基金
湖南省教育厅(02C465)
湖南省重点学科和湖南省普通高校学科带头人基金资助项目
