Polypod Carboxylic Acid-Rare Earth Complex with High Cyclic Stability for Nitrobenzene Compound Detection.

IF 2.6 4区 化学 Q2 BIOCHEMICAL RESEARCH METHODS Journal of Fluorescence Pub Date : 2024-09-26 DOI:10.1007/s10895-024-03948-7
Licong Chen, Rui Shi, Zhongzhi Wang, Xin Qiao, Pengcheng Hao, Wenyu Zhao
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Abstract

The 5',5''-bis(4-carboxyphenyl)-[1,1':3',1'':3'',1'''-quaterphenyl]-4,4'''-dicarboxylic (H4L1) ligand has a large conjugated rigid planar structure and good absorption of ultraviolet radiation, which can provide effective "antenna effect". However, rare earth complexes using H4L1 as the sole ligand have not been reported. In this paper, rare earth Eu was combined with H4L1 ligand to produce organic rare earth composite L1-Eu by solvothermal synthesis method. It was found through fluorescence spectroscopy that the emission of L1-Eu complex has a linear response to nitrobenzene compounds. The L1-Eu composite material has a low detection limit for nitrobenzene compounds, with detection limits of 0.910, 8.401, 24.510, and 8.171 µM for nitrobenzene, o-nitrophenol, m-nitrophenol, and p-nitrophenol, respectively. Further more the L1-Eu complex can sensitively respond to nitrobenzene compounds while resisting interference from common metal ions and organic solvents. In particular, L1-Eu composite material has good stability and recyclability. Therefore, L1-Eu composite material can serve as a fluorescent probe for specific detection of nitrobenzene compounds. We believe that the L1-Eu complex provides a new method for fluorescence detection of nitrobenzene compounds.

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用于硝基苯化合物检测的高循环稳定性聚羧酸稀土复合物。
5',5''-双(4-羧基苯基)-[1,1':3',1'':3'',1'''-四联苯]-4,4'''-二羧酸(H4L1)配体具有大共轭刚性平面结构,对紫外线辐射具有良好的吸收能力,可提供有效的 "天线效应"。然而,以 H4L1 为唯一配体的稀土配合物尚未见报道。本文采用溶热合成法,将稀土 Eu 与 H4L1 配体结合,制备出有机稀土复合物 L1-Eu。通过荧光光谱发现,L1-Eu 复合物的发射对硝基苯化合物具有线性响应。L1-Eu 复合物材料对硝基苯化合物的检测限很低,对硝基苯、邻硝基苯酚、间硝基苯酚和对硝基苯酚的检测限分别为 0.910、8.401、24.510 和 8.171 µM。此外,L1-Eu 复合物对硝基苯化合物的反应灵敏,同时还能抵抗普通金属离子和有机溶剂的干扰。特别是,L1-Eu 复合材料具有良好的稳定性和可回收性。因此,L1-Eu 复合材料可作为荧光探针,用于特异性检测硝基苯化合物。我们相信,L1-Eu 复合物为硝基苯化合物的荧光检测提供了一种新方法。
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来源期刊
Journal of Fluorescence
Journal of Fluorescence 化学-分析化学
CiteScore
4.60
自引率
7.40%
发文量
203
审稿时长
5.4 months
期刊介绍: Journal of Fluorescence is an international forum for the publication of peer-reviewed original articles that advance the practice of this established spectroscopic technique. Topics covered include advances in theory/and or data analysis, studies of the photophysics of aromatic molecules, solvent, and environmental effects, development of stationary or time-resolved measurements, advances in fluorescence microscopy, imaging, photobleaching/recovery measurements, and/or phosphorescence for studies of cell biology, chemical biology and the advanced uses of fluorescence in flow cytometry/analysis, immunology, high throughput screening/drug discovery, DNA sequencing/arrays, genomics and proteomics. Typical applications might include studies of macromolecular dynamics and conformation, intracellular chemistry, and gene expression. The journal also publishes papers that describe the synthesis and characterization of new fluorophores, particularly those displaying unique sensitivities and/or optical properties. In addition to original articles, the Journal also publishes reviews, rapid communications, short communications, letters to the editor, topical news articles, and technical and design notes.
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