摘要
以2-二苯胺羰基苯甲酸(L)为第一配体,咪唑并[5,6-f]邻菲罗啉(IP)为第二配体,合成出新型稀土铕、铽三元配合物。采用元素分析、红外光谱、紫外-可见光谱对配体和配合物的结构进行了表征。红外光谱分析表明配合物中的稀土离子与第一配体L中的氧原子以及第二配体IP中的氮原子进行了配位。紫外光谱表明配合物主要是由第一配体L吸收能量。通过荧光光谱、荧光量子效率和荧光寿命研究了配合物的荧光性能,结果显示:两种配合物均表现出稀土离子的特征发射,且配合物的荧光量子效率和荧光寿命与发光强度成正比,配合物Tb(L)3IP的各项荧光性能均优于Eu(L)3IP。
With 2-diphenylamine carbonyl benzoic acid（L） as the first ligand and imidazo phenanthroline（IP） IP as the secondary ligand,two novel rare earth Eu（Ⅲ）,Tb（Ⅲ） ternary complexes were prepared.The ligands and complexes were characterized by elemental analysis,IR spectra and UV spectra.IR spectra indicated that the rare-earth ions in the complexes were coordinated with oxygen atoms of the first ligand L and nitrogen atoms of the secondary ligand IP.UV spectra showed that the main absorption was from the first ligand L in the complexes.The fluorescence properties of the complexes were investigated by fluorescence spectroscopy,fluorescence quantum efficiency and life time.The results demonstrated that the two kinds of ternary complexes could emit characteristic fluorescence of rare earth ions and the fluorescence quantum efficiency and life time were congruously changed with luminous intensity.Therefore,the fluorescence properties of Tb（L）3IP were better than that of Eu（L）3IP.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2012年第4期410-415,共6页
Journal of the Chinese Society of Rare Earths
基金
吉林省教育厅"十一五"科技项目(201028
201034)资助
关键词
芳香羧酸
合成
荧光性能
能级
稀土
aromatic carboxylic acid
synthesized
energy transfer
fluorescence property
rare earths
