摘要
利用配合物Eu(DBM)(TPPO)_3(NO_3)_2(DBM:二苯甲酰甲烷;TPPO:三苯基氧化膦)能发出很强荧光的特性,以Eu(Ⅲ)离子为荧光探针,77K下测得其高分辨激光激发和发射光谱.激发光谱表明配合物中Eu(Ⅲ)离子仅有1种晶格格位.~5D_o→~7F_j(j=0～4)跃迁光谱表明中心Eu(Ⅲ)离子具有C_(2v)格位对称性.
Since the title coordination compound,Eu(DBM)(TPPO)_3 (NO_3)_2(DBM:dibenzoylmethanate;TPPO:triphenyl phosphine oxide),fluo- resces very intensely under ultraviolet light.Using Eu(Ⅲ)ion as luminescent probe,the high-resolution,laser excited excitation and luminescence spectra were recorded at 77 K.A peak at 17 243 cm^(-1) indicating only one Eu(Ⅲ)ion site in the compound is observed.Spectra of ~5D_0→~7TF_j(j=0-～4)transitions show that the symmetry for Eu(Ⅲ)ion site is C_(2v).
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
1992年第3期354-358,共5页
Journal of Beijing Normal University(Natural Science)
基金
国家自然科学基金
中国科学院长春物理所激发态物理研究开放实验室资助项目
关键词
铕
DBM配合物
荧光光谱
Europium
DBM coordination compound
luminescence spectra
