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. Author manuscript; available in PMC: 2014 Jul 14.
Published in final edited form as: Nat Chem. 2012 Dec;4(12):973–984. doi: 10.1038/nchem.1500

Figure 4. Representative reductive cleavage, nucleophilic reactions and tandem processes for detection of small molecules.

Figure 4

a, Selective reduction of aromatic azides to anilines by hydrogen sulfide (H2S). b, A family of reaction-based dyes that all operate using the same general reaction-based switch as in part a. c, Detection of H2S by a tandem Michael addition. d, Dual nucleophilic addition strategy for H2S visualization. e, Thiol-mediated cleavage of electron-poor aryl sulfonates. f, Reversible sensing of thiols by disulfide–thiol exchange chemistry.