| 3,4'-联苯二甲酸与含氮配体构筑的镧系配合物的合成、晶体结构及荧光传感 |
| Syntheses, Crystal Structures and Fluorescence Sensing of Lanthanide Complexes with 3,4'-Biphenyldicarboxylic Acid and N-donor Ligands |
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| 摘要: 通过水热方法合成了2个镧系配合物，[Gd（3，4'-dpdc）2（HDPP）]n（1）和{[Dy（3，4'-Hdpdc）3（H2O）]·0.5BTB}n（2）（3，4'-H2dpdc=3，4'-联苯二甲酸，DPP=1，3-二（4-吡啶基）-丙烷，BTB=1，4-二（1，2，4-三氮唑）-1-丁烷），通过X射线单晶衍射对其结构进行表征。配合物1属单斜晶系，P21/c空间群。该配合物为二维层状结构，中心Gd（Ⅲ）离子的配位环境为[GdO7N]。3，4'-dpdc配体以μ1：η1η1/μ2：η1η1和μ1：η1η1/μ1：η1η0两种方式桥联Gd（Ⅲ）离子，而HDPP配体是以端基的形式配位于Gd（Ⅲ）离子。配合物2属三斜晶系，P1空间群。配合物2具有一维链状结构，Dy（Ⅲ）离子的配位环境为[DyO7]。3，4'-Hdpdc配体以μ2：η1η1配位模式链接相邻的Dy（Ⅲ）离子。未参加配位的BTB通过氢键与一维链连接，进而形成三维超分子结构。固态光致发光测量表明，化合物1和2在350~650 nm范围内显示出宽峰，归因于配体的π*→π跃迁。进一步研究了水溶液中不同沙星类药物对配合物1的发光的影响，实验结果表明该配合物可以识别培氟沙星。 |
| 关键词: 镧系配合物 3,4'-联苯二甲酸 晶体结构 荧光 |
| 基金项目: 国家自然科学基金（No.21471104）资助项目。 |
| Abstract: Two lanthanide complexes,[Gd(3,4'-dpdc)2(HDPP)]n (1) and {[Dy(3,4'-Hdpdc)3(H2O)]·0.5BTB}n (2) (3,4'-H2dpdc=3,4'-biphenyldicarboxylic acid, DPP=1,3-bis(4-pyridyl)propane, BTB=1,4-bis(1,2,4-triazol-1-yl)butane) were successfully synthesized under hydrothermal reactions, and their structures were characterized by single crystal X-ray diffraction. Complex 1 belongs to monoclinic system, space group P21/c. It is two-dimensional layered structure and consists of[GdO7N] unit. 3,4'-dpdc ligands are connected to the Gd(Ⅲ) ions by μ1:η1η1/μ2:η1η1 and μ1:η1η1/μ1:η1η0 coordination modes. DPP ligands are end-coordinated to Gd(Ⅲ) ions. Complex 2 is a triclinic system, space group P1. The complex shows a one-dimensional chain structure. The coordination environment of Dy(Ⅲ) ion is[DyO7]. The 3,4'-Hdpdc ligands link Dy(Ⅲ) ions in a μ2:η1η1 coordination mode. The BTB molecules are connected to the one-dimensional chains by hydrogen bonds and thus form a three-dimensional supramolecular structure. Solid state photoluminescence measurements show that compounds 1 and 2 display broad band in the range of 350~650 nm due to the π*→π transition of the ligands. The effect of different floxacins on the luminescence of complex 1 in aqueous solution was studied. The results showed that the complex could identify pefloxacin. |
| Keywords: lanthanide complex 3,4'-biphenyldicarboxylic acid crystal structure fluorescence |
| 投稿时间：2018-01-25 修订日期：2018-04-02 |
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| 周鑫,张美娜,张德春,李夏,姚颖芳.3,4'-联苯二甲酸与含氮配体构筑的镧系配合物的合成、晶体结构及荧光传感[J].无机化学学报,2018,34(7):1285-1292. |
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