Publications
Detailed Information
Highly Selective Electrochemiluminescence Chemosensor for Sulfide Enabled by Hierarchical Reactivity
Cited 9 time in
Web of Science
Cited 9 time in Scopus
- Authors
- Issue Date
- 2022-03
- Publisher
- American Chemical Society
- Citation
- Analytical Chemistry, Vol.94 No.12, pp.5091-5098
- Abstract
- Hydrogen sulfide (H2S) is a well-known toxic gas with the odor of rotten eggs. Several reaction-based electrochemiluminescence (ECL) chemosensors for H2S have been developed; however, no homogeneous ECL probe with high selectivity toward H2Sinaqueous media has been reported. Herein, we report an iridium(III) complex-based ECLchemodosimetric probe employing two 7-nitrobenz-2-oxa-1,3-diazol-4-yl (NBD) groups known as a photo-induced electron transfer quencher and a reaction site for the selective detection of H2S; the detection mechanism involves H2S being clearly distinguished frombiothiols based on the different cleavage rates of the two NBD groups and extremely weakECL interferences caused by reaction by-products. The probe was rationally designed toimprove selectivity toward H2S within the ECL analysis platform by enabling the removal of nonspecific background signals observedvia fluorescence analysis. This analytical system exhibited remarkable selectivity toward H2S, a rapid reaction rate, and high sensitivity (LOD= 57 nM) compared to conventional fluorescence methods. Furthermore, the probe could successfully quantify H2S in tap water samples and commercial ammonium sulfide solutions ,which demonstrates the effectiveness of this probe infield monitoring.
- ISSN
- 0003-2700
- Files in This Item:
- There are no files associated with this item.
- Appears in Collections:
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.