Syntheses, Structures and Luminescent Properties of Two Europium-based Metal-organic Frameworks  

作　　者：ZOU Shu-Zhi DU Shao-Wu 

机构地区：[1]State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences [2]Graduate University of Chinese Academy of Sciences

出　　处：《Chinese Journal of Structural Chemistry》2015年第8期1265-1272,共8页结构化学（英文）

基　　金：supported by the National Basic Research Program of China(973 Program,2012CB821702);the National Natural Science Foundation of China(21233009 and 21173221);the State Key Laboratory of Structural Chemistry

摘　　要：Two new europium-based metal-organic-frameworks （MOFs）, namely [NMen][Eu（m- BDC）2] （1） and [Eu3（p-BDC）4（ClO4）（H2O）4] （2）, have been synthesized and structurally characte- rized. Single-crystal X-ray diffraction studies reveal that 1 crystallizes in the monoclinic system, space group P21/n with a 2D layer structure, while 2 crystallizes in the orthorhombic system, space group Pccn with a 3D net structure. Both 1 and 2 have strong characteristic Eu（Ⅲ） emissions at visible red region and the quantum yields can reach up to 78.1 and 46.0%, respectively. The high luminescent efficiency may be attributed to the efficient energy transition from the ligands to the Eu（Ⅲ） center.Two new europium-based metal-organic-frameworks （MOFs）, namely [NMen][Eu（m- BDC）2] （1） and [Eu3（p-BDC）4（ClO4）（H2O）4] （2）, have been synthesized and structurally characte- rized. Single-crystal X-ray diffraction studies reveal that 1 crystallizes in the monoclinic system, space group P21/n with a 2D layer structure, while 2 crystallizes in the orthorhombic system, space group Pccn with a 3D net structure. Both 1 and 2 have strong characteristic Eu（Ⅲ） emissions at visible red region and the quantum yields can reach up to 78.1 and 46.0%, respectively. The high luminescent efficiency may be attributed to the efficient energy transition from the ligands to the Eu（Ⅲ） center.

关 键 词：synthesis  crystal structure  lanthanide-based MOFs  luminescence 

分 类 号：O627[理学—有机化学]