Experimental study demonstrates sensitive bisulfite detection using a turn-on fluorescent probe, highlighting its utility for environmental water monitoring.
Key Points
To develop a selective and sensitive turn-on fluorescent probe using a triphenylamine scaffold for bisulfite and sulfite detection in water.
Synthesized an aldehyde-functionalized triphenylamine fluorescent sensor to react selectively with bisulfite (HSO₃⁻) and sulfite (SO₃²⁻) ions.
Evaluated optical response, selectivity against competing anions, limit of detection, and analytical performance in real water samples.
Chemical transformation of the aldehyde functionality by bisulfite/sulfite induced significant turn-on fluorescence enhancement.
Demonstrated marked selectivity against interfering anions, achieved a low detection limit, and enabled direct measurement in environmental water specimens.