Recent Development in Fluorescent Probes for the Detection of Hg2+ Ions

Mercury, a highly toxic heavy metal, poses significant environmental and health risks, necessitating the development of effective and responsive techniques for its detection. Organic chromophores, particularly small molecules, have emerged as promising materials for sensing Hg2+ ions due to their high selectivity, sensitivity, and ease of synthesis. In this review article, we provide a systematic overview of recent advancements in the field of fluorescent chemosensors for Hg2+ ions detection, including rhodamine derivatives, Schiff bases, coumarin derivatives, naphthalene derivatives, BODIPY, BOPHY, naphthalimide, pyrene, dicyanoisophorone, bromophenol, benzothiazole flavonol, carbonitrile, pyrazole, quinoline, resorufin, hemicyanine, monothiosquaraine, cyanine, pyrimidine, peptide, and quantum/carbon dots probes. We discuss their detection capabilities, sensing mechanisms, limits of detection, as well as the strategies and approaches employed in their design. By focusing on recent studies conducted between 2022 and 2023, this review article offers valuable insights into the performance and advancements in the field of fluorescent chemosensors for Hg2+ ions detection.

Automated summary

Mercury is a highly toxic heavy metal that poses significant risks to the environment and health. Organic chromophores, particularly small molecules, have emerged as promising materials for sensing Hg2+ ions due to their selectivity, sensitivity, and ease of synthesis. This review provides a systematic overview of recent advancements in the field of fluorescent chemosensors for Hg2+ ions detection, covering various probes and discussing their detection capabilities, mechanisms, limits of detection, and design strategies. Focusing on studies conducted between 2022 and 2023, this review offers valuable insights into the performance and advancements in fluorescent chemosensors for Hg2+ ions detection.