通过 Cu2+ 诱导传感器检测硫氰酸根离子的灵敏且具有选择性的光学化学传感器及其实际应用。

IF 2.6 4区 化学 Q2 BIOCHEMICAL RESEARCH METHODS Journal of Fluorescence Pub Date : 2024-09-26 DOI:10.1007/s10895-024-03943-y
Parul Bhalla, Rajesh Malhotra
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引用次数: 0

摘要

在分析、环境和生物化学等多个领域,离子的检测都具有重要意义。本研究设计了一种简单的探针--3-(1-((4-氨基苯基)亚氨基)乙基)-4-羟基-6-甲基-2H-吡喃-2-酮(DPD),用于检测甲醇中的 Cu2+ 离子,该探针基于脱氢乙酸和苯二胺分子。利用紫外可见光测量进行了结合相互作用研究,结果表明其对 Cu2+ 离子具有选择性结合行为。利用 HRMS 光谱数据和约伯图来检验探针与 Cu2+ 离子的 2:1 的化学计量比。观察到 Cu2+ 离子的检测限为 1.38×10-7 M。理论 DFT 计算用于确定量子参数和前沿分子轨道之间的能隙。有趣的是,DPD-Cu2+ 复合物可作为探针,以较低的 LOD 值(即 1.97×10-7 M)检测 SCN- 离子。接着,利用真实的水样和血样,计算了 Cu2+ 离子的浓度,进一步分析了探针的实用性。与之前报道的传感器相比,DPD 探针显示出更好的选择性和灵敏度,尤其是在复杂基质中,而其他传感器经常会遇到干扰和检测极限问题,这表明它有潜力成为各种应用中离子检测的先进工具。
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Optical Chemosensor as a Sensitive and Selective Tool for the Detection of Thiocyanate Ions Via Cu2+ Induced Sensor and Its Practical Application.

In various fields, including analytical, environmental, and biochemistry, the detection of ions is significant. A simple probe, 3-(1-((4-aminophenyl)imino)ethyl)-4-hydroxy-6-methyl-2H-pyran-2-one (DPD), was designed for this study and used for the detection of Cu2+ ions in methanol, based on dehydroacetic acid and phenylenediamine moieties. Binding interactions studies were performed using UV-Vis measurements, which showed selective binding behaviour towards Cu2+ ions. The HRMS spectral data and Job's plot were used to check the stoichiometry ratio of 2:1 of a probe to Cu2+ ions. A detection limit of 1.38×10-7 M for Cu2+ ions was observed. Theoretical DFT calculations were used to determine the quantum parameters and the energy gap between frontier molecular orbitals. Interestingly, the DPD-Cu2+ complex acted as a probe for the detection of SCN- ions at a low LOD value, i.e., 1.97×10-7 M. A novel incidence of reversibility with SCN- ions was reported using the HRMS technique. Next, real water and blood samples were used, and the concentration of Cu2+ ions was calculated to further analyse the practical applicability of the probe. The DPD probe showed better selectivity and sensitivity than previously reported sensors, especially in complex matrices, where other sensors frequently experience interference and detection limit issues, indicating its potential as an advanced tool for ion detection in various applications.

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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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