两种双(8-羟基喹啉)基配位聚合物的合成、单晶结构和荧光性能  

Synthesis,Crystal Structures and Fluorescence Properties of Two Bis(8-Hydroxyquinolinate)-based Coordination Polymers

作　　者：朱丽萍 官叶斌 袁国赞[2] ZHU Liping;GUAN Yebin;YUAN Guozan(School of Chemistry and Chemical Engineering,Anqing Normal University,Anqing 246011,China;School of Chemistry&Chemical Engineering,Anhui University of Technology,Maanshan 243032,China)

机构地区：[1]安庆师范大学化学化工学院,安徽安庆246011 [2]安徽工业大学化学与化工学院,安徽马鞍山243032

出　　处：《安徽工业大学学报（自然科学版）》2022年第2期159-164,共6页Journal of Anhui University of Technology（Natural Science）

基　　金：国家自然科学基金项目(22171002)。

摘　　要：合成一种双(8-羟基喹啉)类有机配体H2L,利用1H-NMR、13C-NMR和ESI-MS对其结构进行表征;配体H2L分别与Cd(Ⅱ)和Zn(Ⅱ)发生离子反应,得到两种金属配合物[Cd_(4)L_(3)I_(2)]·4DMF(1)和[Zn2LI2]·2DMSO(2);利用单晶X射线衍射(SXRD)、粉末X射线衍射(PXRD)和荧光光谱对两种金属配合物的精确结构和发光性能进行研究。结果表明:金属配合物1和2是链状配位聚合物,两种配合物具有不同的双核构建单元和链状排列结构,且皆有较好的晶相纯度;选择380 nm作为激发波长时,配合物1和2分别在580,568 nm处出现最大发射峰,与配体H2L相比,其发射峰发生明显的红移。A bis(8-hydroxyquinoline)-based organic ligand H;L was synthesized,and its structure was characterized by1H-NMR,13C-NMR and ESI-MS.Reacting the ligand H;L with Cd(Ⅱ)and Zn(Ⅱ);ions,respectively two metalorganic complexes[Cd_(4)L_(3)I_(2)·4DMF(1)]·and[Zn_(2)LI_(2)]·2DMSO(2)were obtained.Herein,the precise structures of two as-synthesized complexes as well as their fluorescent properties were explored by single-crystal X ray diffraction(SXRD),powder X ray diffraction(PXRD)and fluorescence spectrometer.The results show that metal complexes1 and 2 are coordination polymers with chain-like structures.Interestingly,they possess two different binuclear building units and chain arrangement structures,and both exhibit high phase purities.Upon excitation at 380 nm,complexes 1 and 2 display maximum emission peaks at 580 and 568 nm respectively.Compared with the free ligand H_(2)L,the emission peaks of two complexes have an obvious red shift.

关 键 词：配合物 单晶结构 8-羟基喹啉 荧光 

分 类 号：O625.5[理学—有机化学]