A selective sulphur‐containing colorimetric chemosensor for Cu2+. (10th October 2019)

• Record Type: Journal Article
• Authors: Lee, Hangyul; Kim, Cheal
• Is Part Of: Coloration technology. Volume 135:Number 6(2019)
• Page Start: 467
• Page End: 474
• Publication Date: 2019-10-10
• Subjects: Color -- Periodicals; Color in the textile industries -- Periodicals; Dyes and dyeing -- Periodicals; 667
• DOI: 10.1111/cote.12431
• Languages: English
• ISSNs: 1472-3581

Abstract

Abstract: A highly selective sulphur‐containing colorimetric chemosensor APTS (( E )‐2‐( tert ‐butyl)‐6‐(((2‐(phenylthio)phenyl)imino)methyl)phenol) was synthesised for detecting Cu 2+ . APTS showed a clear colour change from colourless to yellow with Cu 2+ . The detection limit of APTS for Cu 2+ was 0.52 μmol/L. APTS could also be used as a test strip for detecting Cu 2+ . To understand the binding mode of APTS with Cu 2+, ultraviolet‐visible spectroscopy and electrospray ionisation‐mass spectrometry analyses were conducted. The sensing mechanism of sensor APTS towards Cu 2+ was proposed to be the combination of intramolecular charge transfer and ligand‐to‐metal charge‐transfer through theoretical calculations.