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A naphthol-functionalized bis(salamo)-like chromogenic and fluorogenic probe ( TBS ) was designed and synthesized for efficient double-channel detection of hydrogen sulfide (H 2 S). The probe  TBS  was characterized through various spectroscopic techniques. From both visible light and 365 nm UV light,  TBS  could have naked-eye recognition of H 2 S with obvious color change. In comparison with some chemical probes, the probe  TBS  could selectively monitor H 2 S with detection limit as low as 0.71 μM, which could serve as a promising candidate for detecting H 2 S in real world sampling. Beyond that, the sensing mechanism toward H 2 S was fully validated by  1 H NMR, mass spectra (ESI-MS) as well as UV titration. Density-functional theory and time-dependent density-functional theory calculations were also carried out to further explain the photophysical behavior of the probe  TBS  with H 2 S. Finally, the probe  TBS  could be utilized as sulfide-targeted probe in a practical sample.

A naphthol-functionalized bis(salamo)-like chromogenic and fluorogenic probe for monitoring hydrogen sulfide and application in water samples