Fabrication of highly fluorescent graphene quantum dots for quantification of As3+ ion using modified cellulose paper

IF 3.2 4区化学 Q2 CHEMISTRY, ANALYTICAL Luminescence Pub Date : 2024-09-06 DOI:10.1002/bio.4895

Jigna R. Bhamore, Jinsoo Park, Suresh Kumar Kailasa, Tae Jung Park

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Abstract

Easy, economical, and swift detecting tools are very demanded for assaying various chemical species. The introduction of label-free paper-based read-out devices has significantly reached the demand of analytical science for target analytes assays. Herein, a facile, and disposable inexpensive paper-based sensing tool was fabricated for sensing As³⁺ ion using graphene quantum dots (GQDs) as a fluorescent reader. The CA-GQDs were synthesized using citric acid (CA) as a precursor via the pyrolysis method, further physisorbed on the cellulose substrate for sensing of As³⁺ via aggregation-based fluorescence “turn-off” mechanism. The linear range for quantitating As³⁺ ion is in the range of 0.05–50 μM with a detection limit of 10 nM. The practical application of the CA-GQDs-based analytical platform was verified by assaying As³⁺ ion in water samples. The CA-GQDs-embedded paper strip can be easily extended for assaying of As³⁺ ion, which meets the demand for monitoring of As³⁺ ion in real samples.

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利用改性纤维素纸制作用于定量 As3+ 离子的高荧光石墨烯量子点。

检测各种化学物质需要简便、经济、快速的检测工具。无标记纸质读出设备的引入极大地满足了分析科学对目标分析物检测的需求。本文利用石墨烯量子点（GQDs）作为荧光读出器，制作了一种简便、一次性的廉价纸基检测工具，用于检测 As3+ 离子。石墨烯量子点以柠檬酸（CA）为前体，通过热解方法合成，并进一步物理吸附在纤维素基底上，通过基于聚集的荧光 "熄灭 "机制来感应 As3+。定量 As3+ 离子的线性范围为 0.05-50 μM，检测限为 10 nM。通过检测水样中的 As3+ 离子，验证了基于 CA-GQDs 的分析平台的实际应用。嵌入 CA-GQDs 的纸带可轻松扩展到 As3+ 离子的检测，满足了实际样品中 As3+ 离子的监测需求。

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

Luminescence 生物-生化与分子生物学

CiteScore

5.10

自引率

13.80%

发文量

248

审稿时长

3.5 months

期刊介绍： Luminescence provides a forum for the publication of original scientific papers, short communications, technical notes and reviews on fundamental and applied aspects of all forms of luminescence, including bioluminescence, chemiluminescence, electrochemiluminescence, sonoluminescence, triboluminescence, fluorescence, time-resolved fluorescence and phosphorescence. Luminescence publishes papers on assays and analytical methods, instrumentation, mechanistic and synthetic studies, basic biology and chemistry. Luminescence also publishes details of forthcoming meetings, information on new products, and book reviews. A special feature of the Journal is surveys of the recent literature on selected topics in luminescence.