A new benzothiazole-based chemosensor BTN (1-((Z)-(((E)-3-methylbenzo[d]thiazol-2(3H)ylidene)hydrazono)methyl)naphthalen-2-ol) was synthesized for the detection of Cu 2+ . BTN could detect Cu 2+ with "off-on" uorescent response from colorless to yellow irrespective of presence of other cations.Limit of detection for Cu 2+ was determined to be 3.3 µM. Binding ratio of BTN and Cu 2+ turned out to be a 1:1 with the analysis of Job plot and ESI-MS. Sensing feature of Cu 2+ by BTN was explained with theoretical calculations, which might be owing to internal charge transfer and chelation-enhanced uorescence processes.
A naphthyl thiourea-based effective chemosensor HNC, (E)-2-(2-hydroxy-3methoxybenzylidene)-N-(naphthalen-1-yl)hydrazine-1-carbothioamide, was synthesized.HNC showed quick responses toward Ag + and Zn 2+ through marked fluorescence turn-on in different solvent conditions, respectively. Binding proportions of HNC to Ag + and Zn 2+ were found to be 2:1 and 1:1, respectively. Detection limits of HNC for Ag + and Zn 2+ were calculated as 3.82 and 0.21 μM. Binding processes of HNC for Ag + and Zn 2+ were represented using Job's plot, DFT, 1 H NMR titration, and
A new benzothiazole-based chemosensor BTN (1-((Z)-(((E)-3-methylbenzo[d]thiazol-2(3H)-ylidene)hydrazono)methyl)naphthalen-2-ol) was synthesized for the detection of Cu2+. BTN could detect Cu2+ with “off-on” fluorescent response from colorless to yellow irrespective of presence of other cations. Limit of detection for Cu2+ was determined to be 3.3 µM. Binding ratio of BTN and Cu2+ turned out to be a 1:1 with the analysis of Job plot and ESI-MS. Sensing feature of Cu2+ by BTN was explained with theoretical calculations, which might be owing to internal charge transfer and chelation-enhanced fluorescence processes.
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