Fluorescence Probes Based on Aminoboranes for the Detection of Fluoride Ions and Nitroaromatics: A Bifunctional Fluorescence Detection Platform

IF 3.2 4区 化学 Q2 CHEMISTRY, ANALYTICAL
Luminescence Pub Date : 2025-04-02 DOI:10.1002/bio.70159
Ruohan Li, Zhiyuan Chen, Lai Hu, Jinxing Miao, Senqiang Zhu, Rui Liu, Hongjun Zhu
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引用次数: 0

Abstract

Small-molecule-based fluorescent probes have garnered significant attention because of their excellent optical properties. Among these, multi-stimuli-responsive molecular fluorescent probes have been rapidly developed for their wide range of applications. In this study, we designed a bifunctional fluorescent probe based on three-coordinate boron compounds to detect fluoride ions and 4-nitrophenol. Two compounds NB1 and NB2, containing B-mesityl2 acceptors (A) and nitrogen-containing aromatic donors (D), were confirmed via single-crystal X-ray diffraction. The donor–acceptor (D–A) structure and substantial steric hindrance enable these compounds to exhibit efficient fluorescence emission in both liquid and solid states. Leveraging the properties of three-coordinate boron, these two compounds exhibit a visible and rapid response to fluoride ions, with detection limits of 0.41 μM for NB1 and 1.31 μM for NB2. The detection mechanism was corroborated by 19F NMR and fluorescence emission spectra. Moreover, owing to the D–A B–N unit, both compounds exhibit a significant and rapid response to 4-nitrophenol, resulting from interrupted charge transfer. These compounds serve as fluorescent probes with outstanding bifunctionality, stability, and high efficiency. Given the growing demand for multi-stimuli-responsive fluorescent probes, NB1 and NB2 possess great potential for a wide range of future sensing and detection applications.

基于氨基硼烷的荧光探针检测氟离子和硝基芳烃:一个双功能荧光检测平台
基于小分子的荧光探针由于其优异的光学性能而引起了人们的极大关注。其中,多刺激响应型分子荧光探针因其广泛的应用前景而得到迅速发展。本研究设计了一种基于三配位硼化合物的双功能荧光探针,用于检测氟离子和4-硝基苯酚。通过单晶x射线衍射证实了含b -甲酰基2受体(A)和含氮芳香给体(D)的两个化合物NB1和NB2。供体-受体(D-A)结构和可观的位阻使这些化合物在液体和固体状态下都能表现出有效的荧光发射。利用三配位硼的性质,这两种化合物对氟离子具有明显的快速响应,NB1和NB2的检出限分别为0.41 μM和1.31 μM。通过19F核磁共振和荧光发射光谱证实了其检测机理。此外,由于D-A - B-N单元的存在,这两种化合物对4-硝基苯酚都表现出显著而快速的响应,这是由于电荷转移中断造成的。这些化合物作为荧光探针具有突出的双功能,稳定性和高效率。鉴于对多刺激响应荧光探针的需求日益增长,NB1和NB2在未来传感和检测领域具有广泛的应用潜力。
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来源期刊
Luminescence
Luminescence 生物-生化与分子生物学
CiteScore
5.10
自引率
13.80%
发文量
248
审稿时长
3.5 months
期刊介绍: Luminescence provides a forum for the publication of original scientific papers, short communications, technical notes and reviews on fundamental and applied aspects of all forms of luminescence, including bioluminescence, chemiluminescence, electrochemiluminescence, sonoluminescence, triboluminescence, fluorescence, time-resolved fluorescence and phosphorescence. Luminescence publishes papers on assays and analytical methods, instrumentation, mechanistic and synthetic studies, basic biology and chemistry. Luminescence also publishes details of forthcoming meetings, information on new products, and book reviews. A special feature of the Journal is surveys of the recent literature on selected topics in luminescence.
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