Recently, the Technical Center for Quality and Safety of Forage and Livestock Products at the Institute of Grassland Research, Chinese Academy of Agricultural Sciences, published a review article in the international journal "Coordination Chemistry Reviews" online, summarizing the latest advances in sulfur element fluorescent probes for metal ion detection.
Fluorescent probes based on chalcogen elements for metal ion detection. Image provided by the Institute of Grassland Science, Chinese Academy of Agricultural Sciences.
The detection of metal ions holds significant importance in fields such as biological sciences, clinical medicine, environmental chemistry, and food safety. Excessive intake of essential metal ions can be as dangerous as non-essential ones. Moreover, most toxic metal ions belong to chalcogen elements. Therefore, the development of fluorescent probes with chalcogen elements as recognition sites is receiving considerable attention.
The Center for Quality and Safety Technology of Grassland Livestock and Agricultural Products continues to conduct innovative research on rapid detection. Fluorescent probes with chalcogen elements as recognition sites can react with metal ions or form complexes.
This review systematically summarizes the detection mechanisms, representative detection groups, design principles, and application prospects of metal ion fluorescent probes with sulfur (S), selenium (Se), and tellurium (Te) as recognition sites. Furthermore, based on the Lewis acid-base theory, it elucidates the roles of different chalcogen elements at the same position, the influence of the distance between sulfur-containing ligands and fluorophores, linking arms, the number of introduced chalcogens, and electron donors containing oxygen/nitrogen on the selectivity of chalcogen ligands towards sulfur-containing metal ions. This article provides more rational design concepts and optimization measures for the research of metal ion fluorescent probes.
Detection group for sulfur-containing element detection used in metal ion detection. Image provided by the Institute of Grassland Research, Chinese Academy of Agricultural Sciences.
Assistant researcher Yuning Liu from the Institute of Grassland Research, Chinese Academy of Agricultural Sciences, is the first author of the paper, with researcher Hongxin Wu as the corresponding author. This research was supported by the basic scientific research business fee of the Institute of Grassland Research, Chinese Academy of Agricultural Sciences, the high-level talent introduction project of Inner Mongolia Autonomous Region, and the Natural Science Foundation of Inner Mongolia Autonomous Region.
Related paper information: https://doi.org/10.1016/j.ccr.2024.215896
