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A rhodanine‐based fluorescent chemosensor DHM, 3‐[(E)‐{[4‐(diethylamino)‐2‐ hydroxyphenyl]methylidene}amino]‐2‐sulfanylidene‐1,3‐thiazolidin‐4‐one, has been designed and synthesized. Sensor DHM showed unique optical properties with large fluorescence change on detecting Zn2+. Most cations did not disturb the binding of DHM with Zn2+, while Co2+ and Cu2+ displayed fluorescence quenching and Fe2+, Fe...
A naphthyl thiourea‐based effective chemosensor HNC, (E)‐2‐(2‐hydroxy‐3‐methoxybenzylidene)‐N‐(naphthalen‐1‐yl)hydrazine‐1‐carbothioamide, was synthesized. HNC showed quick responses toward Ag+ and Zn2+ through marked fluorescence turn‐on in different solvent conditions, respectively. Binding proportions of HNC to Ag+ and Zn2+ were found to be 2:1 and 1:1, respectively. Detection limits of HNC for...