具有新型梯形双金属链的铕羧酸-膦酸配合物的晶体结构及其发光性质研究  

Europium carboxylate-phosphonate with a new ladder-like double chains exhibiting luminescence properties

作　　者：徐艳[1] XU Yan(Department of Materials Engineering,Institute of Information Engineering,Suqian College,Suqian 223800,China)

机构地区：[1]宿迁学院信息工程学院材料工程系,江苏宿迁223800

出　　处：《化学研究与应用》2021年第4期708-714,共7页Chemical Research and Application

基　　金：宿迁市科技计划(K201911)资助。

摘　　要：采用溶剂热反应,成功合成一例基于羧酸-膦酸配体的铕配位聚合物,[Eu(5-pnc)(H_(2)O)_(0.5)]·H_(2)O(1)。晶体结构分析表明,聚合物1具有三维超分子网络结构,其中二聚体[Eu_(2)(μ3-O)_(2)]通过两个O-P-O和两个O-C-O单元构成梯形双金属链,沿着a轴无限延伸,这些梯形双金属链通过有机膦酸配体交联。研究了配位聚合物1的热稳定性、紫外可见光谱和发光性能。A novel europium coordination polymer,formulated as[Eu(5-pnc)(H_(2)O)_(0.5)]·H_(2)O(1)has been successfully synthesized by the solvothermal reaction of 5-phosphono-1-naphthalenecarboxylic acid(5-pncH_(3))and Eu(NO_(3))3·6H_(2)O.The crystal structure analysis indicates that polymer 1 shows a three-dimensional supramolecular network structure where ladder-like double chains constructed by the dimers[Eu_(2)(μ3-O)_(2)]through two O-P-O and two O-C-O units,propagating infinite chains running along the a-axis,are cross-linked by the organic groups of the phosphonate ligands.The thermal analysis,UV-Vis,as well as luminescence properties of polymer 1 have been investigated.

关 键 词：铕配合物 羧酸-膦酸 梯形 双链 发光 

分 类 号：O641.4[理学—物理化学]