Nitrogen Doped Carbon Quantum Dots as Fluorescence "Turn-Off-On" Sensor for Detection of Fe³⁺ Ions and Ascorbic Acid in Moringa oleifera and Citrus Lemon.

IF 2.6 4区化学 Q2 BIOCHEMICAL RESEARCH METHODS

Journal of Fluorescence Pub Date : 2024-11-08 DOI:10.1007/s10895-024-04012-0

Girish Sahu, Yogyata Chawre, Ankita Beena Kujur, Pinki Miri, Akash Sinha, Rekha Nagwanshi, Indrapal Karbhal, Kallol K Ghosh, Vinod K Jena, Manmohan L Satnami

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引用次数: 0

Abstract

In recent year, the uses of carbon quantum dots (CQDs) have increased in many fields. Herein we report, synthesis of fluorescent nitrogen doped carbon quantum dots (N-CQDs) by simple and ecofriendly hydrothermal method. The as-synthesized N-CQDs were characterized by various techniques and the quantum yield was also calculated. Then, application of N-CQDs were performed as a sensor for detection of ferric ions (Fe³⁺) based on static quenching mechanism (turn-off) which occurred due to formation of non-fluorescent complex between N-CQDs and Fe³⁺ ions. Interestingly, fluorescence intensity of quenched N-CQDs has been significantly recovered (turn-on) by addition of ascorbic acid (AA). The recovery mechanism is based on the redox reaction between Fe³⁺ ions and AA. Thus, N-CQDs has been used as fluorescence "turn-off-on" sensor for detection of Fe³⁺ ions and AA. Further this detection system is used for detecting Fe³⁺ ions in Moringa oleifera and AA in citrus lemon.

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掺氮碳量子点作为荧光 "开关 "传感器，用于检测油杉和柑橘柠檬中的 Fe3+ 离子和抗坏血酸。

近年来，碳量子点（CQDs）在许多领域的应用日益广泛。在此，我们报告了采用简单、环保的水热法合成荧光氮掺杂碳量子点（N-CQDs）的情况。我们采用多种技术对合成的 N-CQDs 进行了表征，并计算了其量子产率。然后，基于 N-CQDs 与 Fe3+ 离子之间形成的非荧光复合物所产生的静态淬灭机制（熄灭），将 N-CQDs 用作检测铁离子 (Fe3+) 的传感器。有趣的是，加入抗坏血酸（AA）后，被淬灭的 N-CQDs 的荧光强度显著恢复（开启）。其恢复机制是基于 Fe3+ 离子和 AA 之间的氧化还原反应。因此，N-CQDs 被用作检测 Fe3+ 离子和 AA 的荧光 "关-开 "传感器。该检测系统还可用于检测辣木中的 Fe3+ 离子和柑橘柠檬中的 AA。

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.

Nitrogen Doped Carbon Quantum Dots as Fluorescence "Turn-Off-On" Sensor for Detection of Fe3+ Ions and Ascorbic Acid in Moringa oleifera and Citrus Lemon.

Abstract

Nitrogen Doped Carbon Quantum Dots as Fluorescence "Turn-Off-On" Sensor for Detection of Fe³⁺ Ions and Ascorbic Acid in Moringa oleifera and Citrus Lemon.