摘要
首次合成 Eu(MFA)_3 phen(MFA:对甲氧基苯甲酰基-呋喃甲酰基甲烷;phen:1,10-二氮杂菲)配合物,并以元素分析、IR 和~1HNMR 进行表征.在77K 测定了配合物的高分辨光谱.仔细分析配合物的荧光光谱,可以认为由于配位体的易变性而形成了2种 Eu(Ⅲ)格位.利用 Eu(Ⅲ)发光探针确定了 Eu(Ⅲ)离子的亚能级并讨论了格位对称性.
Eu(MFA)_3 phen(MFA:p-methoxybenzoyl-furoylmethane, phen:phenanthroline)complex was synthesized and characterized by elemen- tary analysis,IR and ~1HNMR.High resolution spectra were measured at 77 K.Detailed analysis of the fluorescence spectra shows that the europium complex consists of two different Eu(Ⅲ)sites due to flexibility of ligands. Sublevels of the Eu(Ⅲ)ion are estimated and symmetry of Eu(Ⅲ)sites are discussed.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
1992年第2期194-199,共6页
Journal of Beijing Normal University(Natural Science)
基金
国家自然科学基金
关键词
铕配合物
荧光光谱
发光探针
Eu
complex
fluorescence spectra
luminescent probe
Eu (Ⅲ) ion site
