Affiliation:
1. Hunan Normal University
2. Chinese Academy of Sciences Haixi Research Institute: Chinese Academy of Sciences Fujian Institute of Research on the Structure of Matter
3. Liaoning Institute of Science and Technology
4. The University of Texas at Arlington
Abstract
Abstract
In this paper, a new copper complex of Cu(dapymt)·4H2O (CuDpy) with strong and stable orange fluorescence was synthesized by using 4,6-diamino-2-mercaptopyrimidine (dapymt) as the ligand. Based on the excellent luminescent property of CuDpy, a bifunctional ratiometric fluorescent probe of CuDpy-CDs was constructed adopting CuDpy as the response fluorescent signal and blue-emitting carbon quantum dots (CDs) as the reference fluorescent signal. In the selective identification of anion and cation, CuDpy-CDs probe can specifically identify Ag+ and S2-. The detection limits for Ag+ and S2- were 1.88 μM and 0.16 μM, respectively, while the detection linear range of CuDpy-CDs for ions were 0-400 μM and 0-35 μM, respectively. In addition, a CuDpy-CDs portable sensing gel was fabricated which can monitor the approximate concentration of Ag+ and S2- in wastewater by the color change of fluorescence.
Publisher
Research Square Platform LLC