期刊
ANALYTICAL CHEMISTRY
卷 88, 期 2, 页码 1434-1439出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.5b04194
关键词
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资金
- National Natural Science Foundation of China [21475007, 21275015, 21505003]
- Innovation and Promotion Project of Beijing University of Chemical Technology
- Public Hatching Platform for Recruited Talents of Beijing University of Chemical Technology
- High-Level Faculty Program of Beijing University of Chemical Technology [buctrc201507]
Aqueous sulfides are emerging signaling agents implicated in various pathological and physiological processes. The development of sensitive and selective methods for the sensing of these sulfides is therefore very important. Herein, we report that the as-synthesized 1-oxo-1H-phenalene-2,3-dicarbonitrile (OPD) compound provides promising fluorescent properties and unique reactive properties toward aqueous sulfides. It was found that OPD showed high selectivity and sensitivity toward Na2S over thiols and other inorganic sulfur compounds through a sulfide involved reaction which was confirmed by high-resolution mass spectroscopy (HRMS) and nuclear magnetic resonance (NMR) results. The fluorescence intensity increases linearly with sulfide concentration in the range of 1.030 mu M with a limit of detection of 52 nM. This novel fluorescent probe was further exploited for the fluorescence imaging sensing of aqueous sulfide in HeLa cells.
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