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Fluorescence quenching mechanism and the application of green carbon nanodots in the detection of heavy metal ions: a review

机译:荧光猝灭机理及绿色碳纳米蛋白在重金属离子检测中的应用:综述

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摘要

Fluorescent carbon nanodots (CNDs) are renowned as a new family of zero-dimensional nanomaterials. In the current scenario, CNDs are considered an iconic research field because of their desirable fluorescent behavior, biocompatibility, the ease of functionalization, chemical inertness, and photostability. There are many ways to produce CNDs but natural renewable carbon sources can produce CNDs on a large scale. This can be a significant advantage for researchers to explore their versatile applications. Hitherto, CNDs have been scrutinized as a selective and sensitive fluorescent sensor for different heavy metal ions even at femtomolar ranges. This review overlooks all the previously provided information on the synthesis, properties, and application of CNDs. However, it focuses on the fluorescence-sensing mechanism of heavy metal ions using green-derived CNDs as the detection tool. We give a brief outline of green sources utilized in the CND synthesis, its properties, and the fluorescence mechanism of CNDs. Finally, we comprehensively summarize the quenching mechanism of heavy metal ions to illustrate the related green CND-based sensors. Furthermore, problems and possible solutions to overcome the future path of CNDs in this sensing field are discussed.
机译:荧光碳纳米点(CND)是一类新型的零维纳米材料。在目前的情况下,CND被认为是一个标志性的研究领域,因为其理想的荧光行为、生物相容性、易于功能化、化学惰性和光稳定性。生产CND的方法有很多,但天然可再生碳源可以大规模生产CND。这对于研究人员探索其多功能应用是一个显著的优势。迄今为止,CND作为一种选择性和灵敏的荧光传感器,已经被仔细研究过,即使在飞秒范围内,它也能检测不同的重金属离子。本综述忽略了之前提供的关于CND的合成、性质和应用的所有信息。然而,本文主要研究了利用绿色衍生的CND作为检测工具的重金属离子荧光传感机理。我们简要介绍了用于CND合成的绿色光源、其性质以及CND的荧光机理。最后,我们全面总结了重金属离子的猝灭机理,以说明相关的绿色CND传感器。此外,还讨论了CND在这一传感领域未来发展道路中存在的问题和可能的解决方案。

著录项

  • 来源
    《New Journal of Chemistry》 |2021年第5期|共35页
  • 作者单位

    Univ Madras Dept Chem Madras Christian Coll Chennai Tamil Nadu India;

    Univ Madras Dept Chem Madras Christian Coll Chennai Tamil Nadu India;

    Univ Madras Dept Chem Madras Christian Coll Chennai Tamil Nadu India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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