Year: 2025
Type: article
Abstract: A rhodamine B-based Hg2+-sensitive fluorescent probe P was characterized in H2O-EtOH solution (7:3, v:v, pH 7.0, 2 mM HEPES). Over other tested cations, only the addition of Hg2+ induced the opening of the spiral ring structure of P, and a fluorescence enhancement occurred at 595 nm with a naked eye observed color change from colorless to pink. Using Na2S as a complexing agent, the reversibility of the P-Hg2+ system was proved. The linear range of P for Hg2+ was 9.0×10-6-3.0×10-5 M with a detection limit of 3.0×10-6 M.
Authors: Haoran Zhang, Yuqi Huang, Yuankai Liu, Jun Zhang
Institution: Hainan Medical University
Language: English
Subfield: Spectroscopy
Field: Chemistry
Domain: Physical Sciences
Open Access status: diamond
Funder: Hainan Medical University
Awards: G3849840155, G4182651393
OpenAlex ID: W4411242167