Abstract
The study reports the synthesis of chemosensor (E)-2-(1-(3-aminophenyl)ethylideneamino)benzenethiol (C1), a highly sensitive, colorimetric metal probe that shows distinct selectivity for the detection of Cu2+ ion in various real water samples. Upon complexation with Cu2+ in CH3OH/H2O (60:40 v/v) (aqueous methanol), the C1 demonstrate significant enhancement in the absorption at 250 nm and 300 nm with a color change from light yellow to brown which was visualized using naked-eye. Therefore, these properties make C1 as an effective candidate for on-site Cu2+ ions detection. The emission spectrum of C1 illustrated “TURN-ON” recognition of Cu2+ with a limit of detection (LOD) of 46 nM. Furthermore, Density Functional Theory (DFT) calculations were performed to better understand the interactions between C1 and Cu2+. The obtained results suggested that the electron clouds present around the –NH2 in nitrogen and sulfur in –SH play a pivotal role in the formation of a stable complex. The computational results were in good agreement with the experimental UV–visible spectrometry results. Graphical abstract: [Figure not available: see fulltext.]
Original language | English |
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Pages (from-to) | 1413-1423 |
Number of pages | 11 |
Journal | Analytical Sciences |
Volume | 39 |
Issue number | 8 |
DOIs | |
Publication status | Published - Aug 2023 |
Keywords
- Chemosensor
- Colorimetry
- DFT studies
- Schiff base
- Water samples
ASJC Scopus subject areas
- Analytical Chemistry