Highly Selective Fluorescent Sensor for Detection of Al3+ Based on Schiff-Base of 2-Hydroxy-1-Naphthaldehyde and 8-Aminoquinoline and Its Applications

IF 0.8 4区 化学 Q4 SPECTROSCOPY Journal of Applied Spectroscopy Pub Date : 2024-07-06 DOI:10.1007/s10812-024-01768-y
Su-Qian Cai, Ke-Feng Zhang, Xiao-Hua Cai
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引用次数: 0

Abstract

Aluminum is a widely distributed element and plays an indispensable role in our lives, but excessive intake of Al3+ can cause potential harm to human health. Highly selective methods for the rapid detection of Al3+ are urgently needed. Here, a novel "turn on" fluorescent probe L based on Schiff-base of 2-hydroxy-1-naphthaldehyde and 8-aminoquinoline was obtained in an excellent yield. Probe L presents significant properties such as rapid response, good stability, wide pH range, simple synthetic operation, and provides an efficient strategy for the highly selective detection of Al3+ in an aqueous solution of DMSO/H2O (7:3, v:v). According to Job's curve and fluorescence titration, probe L with Al3+ forms a 2:1 ratio of complex, and the lowest limit of detection is 3.23 × 10−8 mol/L. The possible combination mode for probe L with Al3+ was proposed by comparison with the changes of 1H NMR and FTIR spectra of L and its complex. In addition, the potent applicants for probe L were also investigated, and indicated that it could conveniently be made into a series of sensor strips and applied to rapidly detect trace Al3+ in traditional Chinese medicine.

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基于 2-羟基-1-萘甲醛和 8-氨基喹啉希夫碱的高选择性 Al3+ 检测荧光传感器及其应用
铝是一种广泛分布的元素,在我们的生活中扮演着不可或缺的角色,但过量摄入 Al3+ 会对人体健康造成潜在危害。目前迫切需要高选择性的方法来快速检测 Al3+。本文以 2-hydroxy-1-naphthaldehyde 和 8-aminoquinoline 的希夫碱为基础,获得了一种新型 "开启 "荧光探针 L,且收率极高。探针 L 具有响应速度快、稳定性好、pH 值范围宽、合成操作简单等显著特性,为高选择性检测 DMSO/H2O (7:3,v:v)水溶液中的 Al3+ 提供了一种有效的策略。根据约伯曲线和荧光滴定,探针 L 与 Al3+ 形成的复合物比例为 2:1,最低检测限为 3.23 × 10-8 mol/L。通过比较探针 L 及其复合物的 1H NMR 和 FTIR 光谱的变化,提出了探针 L 与 Al3+ 的可能结合模式。此外,还研究了探针 L 的有效适用人群,结果表明探针 L 可方便地制成系列传感器条,用于快速检测中药中的痕量 Al3+。
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来源期刊
CiteScore
1.30
自引率
14.30%
发文量
145
审稿时长
2.5 months
期刊介绍: Journal of Applied Spectroscopy reports on many key applications of spectroscopy in chemistry, physics, metallurgy, and biology. An increasing number of papers focus on the theory of lasers, as well as the tremendous potential for the practical applications of lasers in numerous fields and industries.
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