基于氮杂环和羧酸配体的三维镉(Ⅱ)金属有机框架的合成、结构及性能  

Synthesis,structure and properties of a 3D Cd(Ⅱ)MOF based on N-heterocyclic and carboxylic acid ligands

作　　者：唐静[1] 杨轶[1] 徐梦鸽 乔子洋 余思冀 黄秋颖[1] Tang Jing;Yang Yi;Xu Mengge;Qiao Ziyang;Yu Siji;Huang Qiuying(Department of Chemical Engineering,Henan Polytechnic Institute,Nanyang 473009,China)

机构地区：[1]河南工业职业技术学院应用化学工程系

出　　处：《南京理工大学学报》2019年第4期535-540,共6页Journal of Nanjing University of Science and Technology

基　　金：国家自然科学基金(21771163);河南省科技厅科技攻关项目(172102210128)

摘　　要：以含有柔性基团的苯并咪唑衍生物2-(1H-咪唑-1-甲基)-6-甲基-1H-苯并咪唑(immb)和芳香二羧酸对苯二甲酸(H2bdic)为配体,以CdCl2·2.5H2O为金属源,通过水热法合成出了一个新的金属有机框架(MOF)[Cd(bdic)(immb)]n(1)。单晶X-射线衍射分析表明,该MOF为单斜晶系,C2/c空间群。桥联配体immb和bdic2-同时与Cd(Ⅱ)离子配位形成三维网状结构,其拓扑符号为(42·63·8)。红外光谱以及热分析的结果与单晶X-射线衍射分析的结果一致。室温固态荧光光谱测定结果表明,标题MOF具有良好的荧光性能。Hydrothermal reaction of CdCl 2·2.5H 2O with flexible benzimidazole derivative 2-(1 H-imidazol-1-methyl)-6-methyl-1 H-benzimidazole(immb)and aromatic polycarboxylic ligand 1,4-benzenedicarboxylic acid(H 2bdic)result in a new metal-organic framework(MOF)[Cd(bdic)(immb)]n(1).The results of X-ray crystallographic analysis reveal that this MOF crystallizes in the monoclinic space group C2/c.Cd(Ⅱ)ions are linked by immb and bdic 2-ligands leading to a 3D structure with the topological notation of(4 2·6 3·8).The IR spectrum and thermogravimetric curve are consistent with the results of the X-ray crystal structure analysis.In addition,the powder of the MOF exhibits good fluorescence at room temperature.

关 键 词：镉(Ⅱ)金属有机框架 晶体结构 热分析 荧光性能 

分 类 号：O614[理学—无机化学]