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A new Schiff base fluorescent probe, 2-(4-(diphenylamine)benzylidene) thiosemicarbazide (DPBT), was synthesized and its sensing behavior to metal ions were studied by UV–vis and fluorescence spectra. The results show that DPBT can detect Hg2+sensitively and selectively in weakly acidic and neutral conditions, they form a complex with 2:1. The linear range was 0.095–1.14µM and the detection limit was...
We report a novel and environmentally friendly fluorescent probe for detecting copper ion (Cu 2+ ) using glutathione (GS)-protected Au nanoclusters (GS-Au NCs). The fluorescence-based sensing behavior by GS-Au NCs toward metal ions was investigated in buffered aqueous media. Among the metal ions studied, Cu 2+ , Hg 2+ and Pb 2+ were found to efficiently quench the fluorescence...
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