Liu RQ, Ding GH, Li JL, Feng HJ, He WY, Wu LY. A triazole-based fluorescence probe for detecting Hg
2+ ions and its biological application.
LUMINESCENCE 2019;
35:129-137. [PMID:
31495065 DOI:
10.1002/bio.3705]
[Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 08/09/2019] [Accepted: 08/13/2019] [Indexed: 11/05/2022]
Abstract
A new compound, ethyl 5-phenyl-2-(p-tolyl)-2H-1,2,3-triazole-4-carboxylate was successfully introduced and synthesized as a novel rhodamine B derivative named REPPC, and characterized by 1 H nuclear magnetic resonance (NMR), 13 C NMR, and high resolution mass spectrometry (HRMS). It showed an obvious fluorescence and UV-visible light absorption enhancement towards Hg2+ ion without interference from common metal ions in N,N-dimethylformamide-H2 O (pH 7.4). The spirolactam ring moiety of rhodamine in REPPC was converted to the open-ring form generating a 1:1 complex with the intervention of a mercury ion, verified by electrospray ionization-mass spectroscopy testing and density functional theory calculation. REPPC was used to visualize the level of mercury ions in living HeLa cells with encouraging results.
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