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Herein, we report the design, synthesis, and characterization of a lanthanideIII complex‐based probe for the time‐gated luminescence detection of hydrogen sulfide (H2S) in aqueous media. The probe's unique sensing mechanism relies on the selective reduction of azide to amine by sulfide, followed by intramolecular cyclization to form a quinolinone. The quinolinone is a sensitizer that absorbs near‐UV...
Lanthanide Probes Hydrogen sulfide (H2S) functions as a signaling second messenger, and inhibition of H2S‐producing enzymes may be a promising therapeutic strategy. The emissive lanthanide probe LLPS‐LnIII generates strong turn‐on luminescence via a unique mechanism. H2S‐mediated reduction of an aryl azide moiety triggers an intramolecular cyclization to form a chromophore that sensitizes TbIII or...
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