Red-emissive carbon dots from Hibiscus rosa-sinensis: a detailed appraisal of tartrazine dye sensing properties

IF 5.3 2区化学 Q1 CHEMISTRY, ANALYTICAL

Microchimica Acta Pub Date : 2024-10-24 DOI:10.1007/s00604-024-06789-0

Neha Garg, Navisha Sharma, Abhijit Dan, Savita Chaudhary

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Abstract

An economically viable and greener approach is introduced to fabricate red emissive carbon dots (R@CQDs) via employing hydrothermal means on Hibiscus rosa-sinensis leaves as precursor source. The obtained R@CQDs displayed excitation-dependent behavior, with high aqueous stability, quantum yield of 56%, and outstanding fluorescence aptitude under the conditions of varied range of ionic strength and pH (1–12). The fluorescence emission behavior of R@CQDs displayed selective turn off fluorescence response to tartrazine over other interfering species with a limit of detection of 0.09 µM and quantitation limit of 0.30 µM. Theoretical calculations employing density functional theory (DFT) were carried out to complement experimental findings and getting insights into the underlying mechanism governing the sensing of tartrazine. The developed sensor holds significant potential for tartrazine detection in real samples and offering wider prospective in the food safety assessment.

Graphical abstract

查看原文本刊更多论文

来自木槿的红色发射性碳点：对酒石酸染料传感特性的详细评估。

本研究介绍了一种经济可行且更环保的方法，即通过水热法以木槿叶为前驱体源制备红色发射性碳点（R@CQDs）。所制备的 R@CQDs 在不同的离子强度和 pH 值（1-12）条件下均表现出与激发相关的行为，具有很高的水稳定性，量子产率高达 56%，荧光性能优异。R@CQDs 的荧光发射行为显示出对酒石酸的选择性熄灭荧光反应，其检测限为 0.09 µM，定量限为 0.30 µM。研究人员利用密度泛函理论（DFT）进行了理论计算，对实验结果进行了补充，并深入了解了感测酒石酸的基本机制。所开发的传感器具有在实际样品中检测酒石酸的巨大潜力，为食品安全评估提供了更广阔的前景。

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

Microchimica Acta 化学-分析化学

CiteScore

9.80

自引率

5.30%

发文量

410

审稿时长

2.7 months

期刊介绍： As a peer-reviewed journal for analytical sciences and technologies on the micro- and nanoscale, Microchimica Acta has established itself as a premier forum for truly novel approaches in chemical and biochemical analysis. Coverage includes methods and devices that provide expedient solutions to the most contemporary demands in this area. Examples are point-of-care technologies, wearable (bio)sensors, in-vivo-monitoring, micro/nanomotors and materials based on synthetic biology as well as biomedical imaging and targeting.