Syntheses, Structures and Photoluminescence of Novel Lanthanide-organic Frameworks Based on 1, 4-Bis(3,5-dicarboxylic pyrazol-1-ylmethyl) Benzene  

作　　者：LI Chuang HE Yong-Ke SHAO Na XIONG Gang WU Shuang-Yan YOU Li-Xin SUN Ya-Guang 李闯;何永科;邵娜;熊刚;吴双妍;由立新;孙亚光(The Key Laboratory of Inorganic Molecule-based Chemistry of Liaoning Province,College of Applied Chemistry,Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]The Key Laboratory of Inorganic Molecule-based Chemistry of Liaoning Province,College of Applied Chemistry,Shenyang University of Chemical Technology,Shenyang 110142,China

出　　处：《Chinese Journal of Structural Chemistry》2020年第5期960-966,共7页结构化学（英文）

基　　金：supported by the National Natural Science Foundation of China(21701116,21671139 and 21501122);the Doctor Scientific Research Foundation of Liaoning Province(201601201 and 201601193);Program for Liaoning Innovative Research Team in University(No.2018012)。

摘　　要：Two isomorphic 3D lanthanide metal-organic frameworks,{[Tb(L)0.5(OX)0.5(H2 O)2DMF]·DMF}n(1)and{[Dy(L)0.5(OX)0.5(H2 O)2 DMF]·DMF}n(2),have been prepared under solvothermal conditions based on l,4-bis(3,5-dicarboxylicpyrazol-1-ylmethyl)benzene(H4 L),oxalis acid(H2 OX)and lanthanide ions.Compound 1 crystallizes in monoclinic system,space group P21/c with a=9.418(15),b=15.23(2),c=14.47(2)?,β=100.07(3)°,V=2044(5)?3,Z=4,Mr=590.3 g/mol,Dc=1.919 g/cm^3,μ=3.524 mm-1,F(000)=1168,R=0.0893 and wR=0.1902 for 3486 observed reflections(I>2σ(I)).In compound 1,the central terbium(Ⅲ)ions are coordinated with eight atoms,and two neighboring terbium(Ⅲ)ions are linked together by one bridging oxalic acid group to give rise to a[Tb2(OX)(L)4]unit.Each[Tb2(OX)(L)4]unit connects to the surrounding six identical ones by the oxygen atoms bridging to lead to a 3D framework.Compound 1 exhibits strong luminescent emissions at the solid state owing to the antenna effect of the ligand.

关 键 词：lanthanide-organic frameworks luminescent emission antenna effect 

分 类 号：O641.4[理学—物理化学]