Synthesis of CuInS₂ Quantum Dots Modified with Alanine for Sensitive and Selective Detection of Pb²⁺ and Cysteine.

IF 2.6 4区化学 Q2 BIOCHEMICAL RESEARCH METHODS

Journal of Fluorescence Pub Date : 2024-10-16 DOI:10.1007/s10895-024-03947-8

Zixuan Jia, Menghan Chen, Mohan Yang, Shenna Chen, Xuhong Zhang

引用次数: 0

Abstract

In this study, a novel fluorescent probe based on CuInS₂ quantum dots modified with alanine (Ala-CuInS₂ QDs) was developed for the detection of lead ions and cysteine (Pb²⁺ and Cys). Ala-CuInS₂ QDs were synthesized through a one-step hydrothermal method exhibiting uniform size, good stability and water solubility. The QDs were then utilized as an "on-off-on" fluorescence sensor to detect Pb²⁺ and Cys in the ranges of 0-20 µM and 0-55 µM respectively, with detection limits of 0.29 µM and 0.66 µM. The mechanism of fluorescence quenching and recovery processes was also explored. Furthermore, Ala-CuInS₂ QDs have been successfully applied to detect Pb²⁺ in tap and river water and detect cysteine in serum.

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用丙氨酸修饰的 CuInS2 量子点的合成，用于灵敏和选择性地检测 Pb2+ 和半胱氨酸。

本研究开发了一种基于丙氨酸修饰的 CuInS2 量子点（Ala-CuInS2 QDs）的新型荧光探针，用于检测铅离子和半胱氨酸（Pb2+ 和 Cys）。通过一步水热法合成的 Ala-CuInS2 QDs 尺寸均匀，具有良好的稳定性和水溶性。该 QDs 被用作 "开关-开启 "荧光传感器，分别检测 0-20 µM 和 0-55 µM 范围内的 Pb2+ 和 Cys，检测限分别为 0.29 µM 和 0.66 µM。研究人员还探讨了荧光淬灭和恢复过程的机理。此外，Ala-CuInS2 QDs 已成功应用于检测自来水和河水中的 Pb2+，以及检测血清中的半胱氨酸。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.

Synthesis of CuInS2 Quantum Dots Modified with Alanine for Sensitive and Selective Detection of Pb2+ and Cysteine.

Abstract

Synthesis of CuInS₂ Quantum Dots Modified with Alanine for Sensitive and Selective Detection of Pb²⁺ and Cysteine.