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Updated: Jun 13, 2026
A Sensitive Visual Method for the Detection of Hydrogen Sulfide Producing Bacteria
Published on: June 27, 2022
New fluorescent zinc complexes: towards specific sensors for hydrogen sulfide in solution
Erwan Galardon1, Alain Tomas, Pascal Roussel
1Laboratoire de Chimie et Biochimie Toxicologiques et Pharmacologiques, UMR 8601 CNRS, Université Paris Descartes, 45 rue des St-Pères, 75270, Paris Cedex 06, France. erwan.galardon@parisdescartes.fr
Abstract:
Two new fluorescent zinc complexes 1 and 2 have been synthesized by reaction of the complex Tp(Ph,Me)Zn(OH) with 7-hydroxy-4-methylcoumarin (MUH) or 7-mercapto-4-methylcoumarin (MUSH). While the alcoholato derivative Tp(Ph,Me)Zn(MU) 1 is not efficient for sensing hydrogen sulfide, the thiolato complex Tp(Ph,Me)Zn(MUS) 2 is a colorimetric "turn-on" and fluorescence "turn-off" sensor which shows high selectivity for hydrogen sulfide in the presence of additional thiols like cysteine or glutathione.
