摘要
合成了3,4-二甲氧基苯乙酸邻菲啰啉钆(Ⅲ)配合物:[Gd2(DMPA)6(phen)2](HDMPA=3,4-二甲氧基苯乙酸,C12H12O4;phen=1,10-邻菲啰啉),并通过元素分析、红外光谱、热重分析对其进行了表征,用单晶X射线衍射方法测定了配合物的晶体结构,晶体属于三斜晶系,空间群P-1。测定了铕离子掺杂的配合物的荧光光谱,荧光光谱表明,游离配体没有荧光,在形成配合物后,显示了铕(Ⅲ)离子的特征发射,在591,618,649和684 nm处观察到了4个分别对应于三价铕离子的5D0→7F1,5D0→7F2,5D0→7F3和5D0→7F4跃迁的特征发射峰,其中以5D0→7F2跃迁的发射最强,这表明配体将吸收的能量有效地转移给了中心离子,配体起到了很好的敏化作用。
A gadolinium（Ⅲ） complex [Gd2（DMPA）6（phen）2]（HDMPA=3,4-dimethoxyphenylacetic acid,C12H12O4;phen=1,10-phenanthroline） was synthesized and characterized by elemental analysis,IR and TG-DTG.Its crystal structure was determined by single crystal X-ray diffraction method.The complex,C84H82Gd2N4O24,crystallized in the monoclinic system,space group P-1.The emission spectra of the complexes which were doped with Eu3＋（2%,6%,10%,molar fraction） in place of Gd3＋ were investigated.There were four main peaks,591,618,649 and 684 nm,corresponding to 5D0→7F1,5D0→7F2,5D0→7F3 and 5D0→7F4 transitions of Eu（Ⅲ）,respectively.The intensity of 5D0→7F2 was much stronger than others.The luminescence behavior probably resulted from the ligand-sensitized metal-centered emission.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2010年第5期525-530,共6页
Journal of the Chinese Society of Rare Earths
关键词
钆(Ⅲ)配合物
3
4-二甲氧基苯乙酸
邻菲啰啉
晶体结构
荧光光谱
gadolinium（Ⅲ） complex
3
4-dimethoxyphenylacetic acid
1
10-phenanthroline
crystal structure
fluorescence spectrum
