| 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 | |
| 摘要: 基于5-(3，4-二羧基苯氧基)间苯二甲酸(H4dppa)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)(H2O)2]·2.5H2O}n(Dy-MOF)和{(dima)[Eu (dppa)(H2O)2]·1.5H2O}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。 | |
| 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 | |
| 基金项目: 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)和延安大学研究生教育创新计划项目(No.YCX2023088)资助。 | |
| Abstract: 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)(H2O)2]·2.5H2O}n (Dy - MOF) and {(dima) [Eu(dppa) (H2O)2]·1.5H2O}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. | |
| Keywords: lanthanide metal-organic frameworks 5-(3,4-dicarboxyphenoxy) isophthalic acid crystal structure fluorescence sensing | |
| 投稿时间：2023-08-07 修订日期：2023-12-13 | |
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| 闫睿魁,陈小莉,蔡苗,任静,崔华莉,杨华,王记江.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[J].无机化学学报,2024,40(4):834-848. | |
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