Development of sustainable fluorescence approach with red emissive carbon dots derived from Grewia asiatica fruit for the detection of quinalphos

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2024-08-09 DOI:10.1016/j.jphotochem.2024.115948

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Abstract

A sustainable and eco-friendly approach was developed for the fabrication of red emissive carbon dots via microwave-assisted method using Grewia asiatica fruits as a source. The as-prepared Grewia asiatica-carbon dots (GA-CDs) exhibited red emission at 672 nm upon the excitation at 420 nm with a quantum yield of 21 %. The characteristic emission intensity of GA-CDs (λ_Em = 672 nm) is selectively quenched by quinalphos (QLP) pesticide via inner filter effect. The as-prepared GA-CDs serve as a versatile turn-off fluorescent probe for QLP sensing, displaying wider linear range (0.25–60 μM) with an impressive detection limit of 0.00159 μM. The integration of GA-CDs with fluorescence spectrometry offers to establish a rapid, simple and miniaturize analytical strategy for QLP assay in vegetable, water and soil samples. Furthermore, the bioimaging and cytotoxicity characteristics of GA-CDs were evaluated on yeast cells and lung cancer cells, respectively. This method provides a facile and convenient pathway for the on-site detection of QLP in food and agriculture samples.

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利用从天竺葵果实中提取的红色发射性碳点开发用于检测喹硫磷的可持续荧光方法

本研究开发了一种可持续的生态友好型方法，即以茜草果实为原料，通过微波辅助方法制备红色发射碳点。制备的茜草果碳点（GA-CDs）在 420 纳米波长的激发下于 672 纳米波长处发出红色光，量子产率为 21%。GA-CDs 的特征发射强度（λEm = 672 nm）通过内滤光片效应被喹硫磷（QLP）农药选择性淬灭。制备的 GA-CDs 可用作 QLP 感测的多功能熄灭荧光探针，其线性范围更广（0.25-60 μM），检测限高达 0.00159 μM。GA-CDs 与荧光光谱法的结合为蔬菜、水和土壤样品中的 QLP 检测提供了一种快速、简单和微型化的分析策略。此外，还分别在酵母细胞和肺癌细胞上评估了 GA-CDs 的生物成像和细胞毒性特性。该方法为现场检测食品和农业样品中的 QLP 提供了一种简便易行的途径。

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.