| 四个Cd(II)配位聚合物：辅助配体对晶体结构以及荧光性能的影响 |
| Four Cadmium-Organic Coordination Polymers: Influence of Secondary Ligands to Crystal Structures and Luminescent Properties |
|
| 摘要: 采用溶剂热的方法,将配位模式丰富的多羧酸有机配体5-(2-硝基-4-羧基苯氧基)-间苯二甲酸与Cd2+离子以及不同的辅助配体原位组装而成四个新的配位聚合物晶体材料: [Cd(Hncpoi)(2,2’-bpy)(H2O)]n (1),[Cd2(Hncpoi)2(bpyp)(H2O)4]n . 3nH2O (2),[Cd2(Hncpoi)2(azpy)(H2O)2]n . 2nH2O (3),[Cd2(Hncpoi)2(dpe)(H2O)2]n . 2nH2O (4)。对几个化合物进行了X射线单晶衍射,粉末衍射,元素分析,热重,荧光光谱等表征。X射线单晶结构分析表明,化合物1,2具有一维链状结构,而化合物3,4则具有二维(4,4)格子层状结构,一维链和二维层之间通过分子间作用力连接成三维超分子结构。进一步研究表明,辅助配体的构型,配位方式等对晶体结构具有决定性作用。与此同时,对几个化合物的荧光光谱进行分析,发现不同的辅助配体对化合物的荧光性能有着显著的影响。 |
| 关键词: 配位聚合物 晶体结构 荧光光谱 辅助配体 |
| 基金项目: 国家自然科学基金，福建省教育厅科研基金 |
| Abstract: Four cadmium-organic coordination polymers, namely [Cd(Hncpoi)(2,2’-bpy)(H2O)]n (1),[Cd2(Hncpoi)2(bpyp)(H2O)4]n . 3nH2O (2),[Cd2(Hncpoi)2(azpy)( H2O)2]n . 2nH2O (3),[Cd2(Hncpoi)2(dpe)( H2O)2]n . 2nH2O (4), have been solvothermally constructed from multi-carboxylic organic ligand 5-(2-Nitro-4-carboxyphenoxy)-isophthalic acid), Cd2+ ions, and different auxiliary ligands. These compounds were further characterized by single-crystal X-ray diffraction, PXRD, elemental analysis, and TG. Single-crystal X-ray diffraction showed that compounds 1, 2 exhibit 1D chain-like structure, and compounds 3, 4 are 2D (4,4) grid layered structure. 1D chains or 2D layers of these compounds further assemble to 3D supramolecular architectures via intermolecular interactions. Moreover, we have found that the coordination modes and configurations of secondary ligands have a crucial influence to the crystal structures of these compounds. Meanwhile, the photoluminescent properties of these compounds were also studied. The results showed that there are close relationship between the secondary ligands and photoluminescence properties of these coordination polymers. |
| Keywords: coordination polymer crystal structure photoluminescence spectrum secondary ligand |
| 投稿时间：2017-08-07 修订日期：2017-12-01 |
| 摘要点击次数: 22 |
| 全文下载次数: 0 |
|
| 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
