以4′-羟基-联苯-4-羧酸和1,3-二(4-吡啶基)丙烷构筑的一维锌配位聚合物的晶体结构与荧光性质(英文)

Synthesis, Structure and Luminescence of a 1D Zinc(Ⅱ) Coordination Polymer Constructed from 4′-Hydroxyl-biphenyl-4-carboxylate and 1,3-Bis(4-pyridyl)propane Ligands

水热条件下采用Zn(NO3)2.6H2O,4′-羟基-联苯-4-羧酸和1,3-二(4-吡啶基)丙烷作为反应物合成出一个新的一维锌金属配位聚合物{[Zn(Hhbc)2(bpp)].H2O}n(1)(Hhbc=4′-羟基-联苯-4-羧酸,bpp=1,3-二(4-吡啶基)丙烷),并分别用元素分析、红外光谱、差热分析、X-射线粉末衍射和X-射线单晶衍射等表征了该结构。晶体结构分析结果表明:化合物1为一维链状锌(Ⅱ)配位聚合物,通过分子间的O-H…O氢键作用,一维链进一步被连接成二维超分子结构。荧光分析表明常温固态下配合物1发射蓝色荧光,荧光寿命为3.08 ns(480 nm)。

A new 1D zinc（Ⅱ） coordination polymer {[Zn（Hhbc）2（bpp）]H2O}, （1） （Hhbc =4＇-Hydroxyl-biphenyl-4- carboxylate, bpp=1,3-bis （4-pyridyl）propane） has been synthesized by hydrothermal method and characterized by elemental analysis, IR, TGA, powder X-ray diffraction and single-crystal X-ray diffraction. The carboxylate oxygens of two different Hhbc ligands connect one ZnⅡ ion in bidentate-chelating and monodentate coordinated modes to form mononuclear zinc building blocks, which are further linked into a 1D infinite chain through trans- bpp ligands. These chains are further linked into a 2D supramolecular network through water-hydroxyl tetramers involving the free water molecules and hydroxyl groups of Hhbe ligands. Furthermore, the luminescent property of complex 1 was investigated at room temperature. CCDC： 919045.