Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 221, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2019.117187
Keywords
H2S; Coumarin-based; Fluorescent probe; Mechanism; Cell imaging
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Funding
- National Natural Science Foundation for Young Scientists of China [21301150]
- Practice Innovation Training Program Projects for the Jiangsu College Students [2018103240005X]
- Six Talent Peak Project in Jiangsu Province [SWYY-063]
- Qing Lan Project of Jiangsu Province
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A coumarin-based turn on probe, named 3-((E)-3-(1H-indol-3-yl)acryloyl)-2H-chromen-2-one(IAC) was designed and synthesized for the detection of H2S in aqueous medium. IAC showed no obvious red fluorescence in Tris-HCl(pH - 7.2, 60% DMF), a 28.2-fold fluorescence enhancement was found when 40 equiv. H2S was added. Other analytes such as anions, metal ions and GSH, Cys, Gly did no significant fluorescence enhancement at 580 nm to IAC. The red fluorescence enhancement mechanism between IAC and H2S was considered by DFT and ESI-MS. Overall, IAC was successfully applied in cell imaging. (C) 2019 Elsevier B.V. All rights reserved.
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