检测 Ag+ 和 Hg2+ 离子的新型荧光传感器：理论与实验研究的结合。

IF 2.6 4区化学 Q2 BIOCHEMICAL RESEARCH METHODS

Journal of Fluorescence Pub Date : 2024-10-23 DOI:10.1007/s10895-024-03988-z

Nguyen Khoa Hien, Mai Van Bay, Quan V Vo, Ngo Duy Y, Duong Tuan Quang, Pham Cam Nam

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引用次数: 0

摘要

利用密度泛函理论计算和实验研究相结合的方法，研究了一种基于二乙氨基水杨醛-硫代氨基脲（DST）的新型荧光传感器。在存在各种竞争金属离子和阴离子的情况下，DST 能够检测金属离子 Ag+ 和 Hg2+，检测限分别为 0.45 和 0.34 µM。DST 传感器可在全水环境和 5 至 9 的宽 pH 值范围内工作。密度泛函理论研究支持了实验结果，确定了 DST 传感器以及 DST 与 Ag+ 和 Hg2+ 离子之间复合物的稳定结构，并阐明了 DST 传感器和复合物的荧光开-关机制。

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A Novel Fluorescent Sensor for Detecting Ag⁺ and Hg²⁺ ions: A Combination of Theoretical and Experimental Studies.

A new fluorescent sensor based on diethylaminosalicylaldehyde-thiosemicarbazide (DST) was studied using a combination of density functional theory calculations and experimental investigations. DST was able to detect the metal ions Ag⁺ and Hg²⁺ in the presence of various competing metal ions and anions, with detection limits of 0.45 and 0.34 µM, respectively. The DST sensor could operate in a fully aqueous environment and within a wide pH range from 5 to 9. Density functional theory studies supported the experimental findings in determining the stable structures of the DST sensor and the complexes between DST and the Ag⁺ and Hg²⁺ ions, as well as elucidating the fluorescence ON-OFF mechanism in the DST sensor and the complexes.

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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.