由取代咪唑二羧酸构筑的铽金属有机框架的晶体结构及分子识别性能研究  

Synthesis,crystal structure and luminescent sensing of a o-bromophenyl imidazole dicarboxylate-based Tb MOF

作　　者：赵益诚 安子龙[2] 赵黎嘉 李纲[2] ZHAO Yi-chen;AN Zi-long;ZHAO Li-jia;LI Gang(College of Chemistry and Molecular Engineering,Zhengzhou University,Zhengzhou 450001,China;Zhengzhou New Feng Yang Foreign Language School,Zhengzhou 450001,China)

机构地区：[1]郑州外国语新枫杨学校,河南郑州450001 [2]郑州大学化学与分子工程学院,河南郑州450001

出　　处：《化学研究与应用》2016年第7期1008-1012,共5页Chemical Research and Application

基　　金：国家自然基金资助项目(21571156)资助通讯

摘　　要：采用有机配体2-(邻溴)苯基-4,5-咪唑二羧酸(o-BrPhH_3IDC)与六水合硝酸铽,在草酸铵的存在下,通过溶剂热反应,成功制备了一个未见报道的二维发光金属有机框架{[Tb_2(o-BrPhHIDC)_2(C_2O_4)(H_2O)_3]·5H_2O}n(1)。采用元素分析、红外光谱、PXRD以及单晶衍射技术测试了其分子结构。结构分析表明:它是一个由配体o-BrPhHIDC_2-和辅助配体草酸根桥连Tb(Ⅲ)形成的格子状的2D结构。研究了1在空气气氛下的热分解特点以及固态荧光光谱,进而测试了其小分子识别性能。A new two-dimensional metal-organic framework{[Tb2(o-BrPhHIDC)2(C2 O4 )(H2 O)3 ]·5H2 O}n(1)was successfullysolvothermally synthesized by the reaction of organic ligand, 2-( 2-bromophenyl)-1H-imidazole-4, 5-dicarboxylic acid ( o-BrH3 PhIDC)with Tb(NO3 )3·6H2 O in the presence of ammonium oxalate. The polymer 1 was characterized by elemental analysis,thermogravimetric analysis,IR spectroscopy,PXRD and single crystal X-ray diffraction. The structural analyses indicate that 1 is a2D grid structure in which the adjacent metal ions are linked by o-BrPhH3 IDC and C2 O42- ligands. The thermal and luminescentproperties under air were determined. Furthermore,its chemical sensing properties to small molecules were investigated.

关 键 词：取代咪唑二羧酸 铽(III) 金属有机框架 晶体结构 荧光性能 

分 类 号：O614.241[理学—无机化学]