powder X-ray diffraction (PXRD) and fluorescence spectroscopy. Compound 1 is a (5,5)-connected 3D framework with a 45·65} topology. Compound 2 possesses a (5,5)-connected 3D framework with a 47·63} topology. Compounds 3 and 4 display a (4,4,6)-connected 3D framework with a 42·64}244·611}244·62} topology. Remarkably, the four presented compounds show luminescence changes in the presence of metal ions
四个三维(3D)发光
金属-有机骨架(MOF),Zn 2(HL 1)(H 2 O)0.8(1),Cd 2(L 1)(
DMF)2(2),[Zn 3( HL 2)2 ]·[(CH 3)2 NH 2 ] 4(3)和[Cd 3(L 2)2 ]·[(CH 3)2 NH 2 ] 6(4)(H 5L 1 = 3,5-二(3'5'-二羧基苯基)
苯甲酸,H 6 L 2 = 3,4-二(3,5-二羧基苯基)
邻苯二甲酸,
DMF = N,N-二甲基甲酰胺)基于刚性
羧酸盐
配体成功组装。这四种化合物已通过元素分析,红外(IR)光谱,热重分析(TGA),单晶X射线衍射,粉末X射线衍射(PXRD)和荧光光谱进行了表征。化合物1是具有4 5 ·6 5 }拓扑的(5,5)连接的3D框架。化合物2具有(5,5)连接的3D框架,其中4 7 ·6 3拓扑。化合物3和4显示具有4 2 ·6 4 } 2 4 4 ·6 11 } 2