【作者】 胡学雷； 潘志权； 罗勤慧； 沈孟长；

【Author】 Hu Xue-lei Pan Zhi-quan Luo Qin-hui Shen Meng-chang( Coordination Chemistry Institute, Nanjing University, Nanjing 210093 Chemical Engineering and Pharmacy Institute, Wuhan Chemical Engineering College 430074)

【机构】 南京大学配位化学研究所配位化学国家重点实验室； 武汉化工学院化工与制药学院；

【摘要】 <正> 近年来,发现大环配体能增强稀土离子的稳定性及大环配体对溶剂分子的屏蔽效应能增强稀土的荧光,因此稀土大环配合物的荧光研究引起人们极大的重视,已有总结性的论文发表。本文以2-羟基-1,3-丙二胺和2,6-二甲酰基-4-甲基-苯酚在稀土存在下得到了单核稀土大环合物[Eu(H4L)(H2O)(NO3)2](NO3)·2H2O,并以醋酸根或硝酸根为桥基,合成了三个结构不同的双环双核Eu配合物([Eu2(H3L)2(Ac)2(C2H5OH)2](ClO4)2·0.75H2O,[Eu2(H3L)2(Ac)2(NO3)](ClO4)·2H2O·MeOH,[Eu2(H4L)2(Ac)2(NO3)2](NO3)2·2H2O). (1)运用ES—MS等谱学和X-衍射晶体结构等手段进行系统的表征,发现三个双核Eu(Ⅲ)配合物更多还原

【Abstract】 The mono- and binuclear rare earth macrocyclic complexes ([Eu(H4L)(H2O) (NO3)2] (NO3) ·2H2O , [Eu2(H3L)2(Ac)2(C2H5OH)2](ClO4)2·0.75H2O, [Eu2(H3L)2(Ac)2(NO3)](ClO4) ·2H2O-MeOH and [Eu2(H4 L)2(Ac)2 (NO3)2](NO3)2·2H2O) were synthesized by condensation of 2-hydroxyl-propyl-l,3-diamine with 4-methyl-2,6-diformy]phenol in the presence of rare earth ions and characterized by ES-MS and X-ray structure analysis. The luminescence properties of the four europium(Ⅲ) complexes were studied in details. The luminescence of the mononuclear europium(Ⅲ) complex couldbe tuned by small molecules. The three binuclear europium(Ⅲ) complexes had stronger luminescence than the mononuclearcomplex because of overcoming the affect by water molecules.更多还原