一种基于咪唑并[1, 2-a]吡啶的荧光探针，用于 "开-关-开 "连续检测 Fe3+ 和 F。

IF 2.6 4区化学 Q2 BIOCHEMICAL RESEARCH METHODS

Journal of Fluorescence Pub Date : 2025-05-01 Epub Date: 2024-05-16 DOI:10.1007/s10895-024-03763-0

Lei Xue, Yelin Yao, Xin Wang, Jichen Yin, Haibin Wang

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引用次数: 0

摘要

由 2-苯甲酰基吡啶和邻香兰素合成的 "开关-开关 "荧光探针 LK 可在 DMSO/H2O 溶液（v/v = 1/1，HEPES 缓冲溶液，1.0 mM，pH 7.0）中顺序检测 Fe3+ 和 F-，并具有较大的斯托克斯位移（178 nm）。LK 不仅对 Fe3+ 和 F- 具有很高的选择性和灵敏度，而且对其他离子具有很强的抗干扰能力。LK 与 Fe3+ 的配位比为 2:1，结合常数（Ka）为 1.3 × 104 M-1。Fe3+ 和 F- 的检测限分别为 6.9 × 10- 8 M 和 3.0 × 10- 7 M。由于 LK 具有优异的传感性能，因此被成功地应用于实际水样和试纸中 Fe3+ 和 F- 的检测。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

An Imidazo[1, 2-a]Pyridine Based Fluorescent Probe for the Continuous "on-off-on" Detection of Fe3+ and F.

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An Imidazo[1, 2-a]Pyridine Based Fluorescent Probe for the Continuous "on-off-on" Detection of Fe³⁺ and F^.

An "on-off-on" fluorescent probe LK was synthesized from 2-benzoylpyridine and o-vanillin, which could sequentially detect Fe³⁺ and F^- in DMSO/H₂O solutions (v/v = 1/1, HEPES buffer, 1.0 mM, pH 7.0) with large Stokes shift (178 nm). LK exhibited not only high selectivity and sensitivity towards Fe³⁺ and F^-, but also strong anti-interference ability to other ions. LK was coordinated with Fe³⁺ at a ratio of 2:1, with a binding constant (K_a) of 1.3 × 10⁴ M^- 1. The detection limits for Fe³⁺ and F^- were 6.9 × 10^- 8 M and 3.0 × 10^- 7 M, respectively. Due to its excellent sensing performance, LK was successfully applied in actual water samples and test papers for the detection of Fe³⁺ and F^-.

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来源期刊

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.