高灵敏、多响应的镧系金属有机骨架的设计、合成和荧光传感性能  

Design,synthesis,and fluorescence sensing performance of highly sensitive and multi⁃response lanthanide metal⁃organic frameworks

作　　者：闫睿魁 陈小莉[1] 蔡苗 任静 崔华莉[1] 杨华[1] 王记江[1] YAN Ruikui;CHEN Xiaoli;CAI Miao;REN Jing;CUI Huali;YANG Hua;WANG Jijiang(School of Chemistry and Chemical Engineering,Shaanxi Key Laboratory of Chemical Reaction Engineering,Laboratory of New Energy&New Function Materials,Yan′an University,Yan′an,Shaanxi 716000,China)

机构地区：[1]延安大学化学与化工学院,陕西省反应工程重点实验室,新能源新功能材料实验室,延安716000

出　　处：《无机化学学报》2024年第4期834-848,共15页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21763028);陕西省科技厅重点研发计划一般项目(No.2022NY-071);延安大学研究生教育创新计划项目(No.YCX2023088)资助。

摘　　要：基于5-(3,4-二羧基苯氧基)间苯二甲酸(H_(4)dppa)配体,通过水热法设计并合成了2种镧系金属有机骨架(Ln-MOFs):{(dima)[Dy(dppa)(H_(2)O)_(2)]·2.5H_(2)O}n(Dy-MOF)和{(dima)[Eu(dppa)(H_(2)O)_(2)]·1.5H_(2)O}n(Eu-MOF)(dima=二甲胺阳离子)。并用元素分析、红外光谱、单晶X射线衍射等对其进行了结构表征。2种Ln-MOFs为异质同构的二维网状结构,相邻的二维网络通过氢键作用进一步形成三维超分子网络结构。荧光分析表明Dy-MOF和Eu-MOF在室温下具有优良的荧光性能,而且Dy-MOF还具有优异的荧光传感性能,可高效、高灵敏检测多种水中污染物:苯胺(ANI)、硝基苯(NB)、四环素(TC)、嘧霉胺(PTH)以及色氨酸(Trp)。此外还探究了Dy-MOF检测污染物时的荧光淬灭机理。Based on the 5-(3,4-dicarboxyphenoxy)isophthalic acid(H4dppa)ligand,two lanthanide metal-organic frameworks(Ln-MOFs)were designed and synthesized by hydrothermal synthesis:{(dima)[Dy(dppa)(H_(2)O)_(2)]·2.5H_(2)O}n(Dy-MOF)and{(dima)[Eu(dppa)(H_(2)O)_(2)]·1.5H_(2)O}n(Eu-MOF)(dima=dimethylamine cation).The structures were characterized by elemental analysis,infrared spectroscopy,single-crystal X-ray diffraction,etc.Dy-MOF and Eu-MOF are hetero-isomorphic 2D network structures,and adjacent 2D networks further form 3D supramolecular network structures through hydrogen bonding.Fluorescence analysis shows that Dy-MOF and Eu-MOF have excellent fluorescence properties at room temperature,and Dy-MOF has excellent fluorescence sensing properties,which can efficiently and high-sensitively detect a variety of pollutants in water:aniline(ANI),nitrobenzene(NB),tetracycline(TC),pyrimethanil(PTH),and tryptophan(Trp).The fluorescence quenching mechanism of Dy-MOF in detecting pollutants was also investigated.CCDC:2284537,Dy-MOF;2067689,Eu-MOF.

关 键 词：镧系金属有机骨架 5-(3 4-二羧基苯氧基)间苯二甲酸 晶体结构 荧光传感 

分 类 号：O614.342[理学—无机化学] O614.338[理学—化学]