A near-infrared fluorescent probe for rapid and selective detection of hydrosulfide and imaging in live cells

A near-infrared fluorescent probe for rapid and selective detection of hydrosulfide and imaging... A heptamethine cyanine-based near-infrared (NIR) fluorescent probe Cy-1 for hydrosulfide detection was developed, with the response mechanism based on nucleophilic substitution of acryloyl moiety by HS−. Upon addition of NaHS, Cy-1 displayed a rapid fluorescence quenching (excited at 700 nm) and a quick fluorescence enhancement (excited at 544 nm) as well as obvious changes in absorption spectra and color. The response was fast within tens of seconds and could be observed by naked eyes. By contrasting Cy-1 with the reported probe CyAC, the superiority of Cy-1 in selectivity over Cys was demonstrated. Besides, it also exhibited excellent selectivity and sensitivity to HS− over various anions (0.33-μM detection limit). Additionally, this probe was successfully applied in fetal bovine serum samples and imaging of hydrosulfide in living cells. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

A near-infrared fluorescent probe for rapid and selective detection of hydrosulfide and imaging in live cells

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Publisher
Springer Journals
Copyright
Copyright © 2016 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-016-2805-3
Publisher site
See Article on Publisher Site

Abstract

A heptamethine cyanine-based near-infrared (NIR) fluorescent probe Cy-1 for hydrosulfide detection was developed, with the response mechanism based on nucleophilic substitution of acryloyl moiety by HS−. Upon addition of NaHS, Cy-1 displayed a rapid fluorescence quenching (excited at 700 nm) and a quick fluorescence enhancement (excited at 544 nm) as well as obvious changes in absorption spectra and color. The response was fast within tens of seconds and could be observed by naked eyes. By contrasting Cy-1 with the reported probe CyAC, the superiority of Cy-1 in selectivity over Cys was demonstrated. Besides, it also exhibited excellent selectivity and sensitivity to HS− over various anions (0.33-μM detection limit). Additionally, this probe was successfully applied in fetal bovine serum samples and imaging of hydrosulfide in living cells.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Nov 15, 2016

References

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