Synthesis of Carbon Dots and their Application as Turn Off–On Fluorescent Sensor for Mercury (II) and Glutathione

  • Lin Cai
  • Zheng Fu
  • Fengling CuiEmail author


In this paper, we present a new method for the detection of mercury (II) and glutathione using carbon dots as fluorescent sensor. The synthesized carbon dots have the advantages of simple manipulation, low cost and the high fluorescence quantum yield of them which was22.79%. The combination of mercury (II) and carbon dots caused the turn off of carbon dots fluorescence. With the reaction between mercury (II) and glutathione, the carbon dots were released and the fluorescence was turned on when the glutathione added. According to this, the carbon dots could be developed to detect mercury (II) and glutathione specifically, and the detection limit of mercury (II) is as low as 0.41 μM.


Carbon dots Fluorescence Hg2+sensing Glutathione sensing 



This work is financed by the National Natural Science Foundation of China-Union Foundation of Henan (U1704170), Key Programs of Henan for Science and Technology Development (182102310103 and 182102310848) and Key Scientific Research Project of Henan Ministry of Education (20A610005).


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© Springer Science+Business Media, LLC, part of Springer Nature 2020

Authors and Affiliations

  1. 1.Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, National Demonstration Center for Experimental Chemistry Education, School of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiangPeople’s Republic of China

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