Colorimetric Detection of Copper(II) Ions Using Schiff‐Base Derivatives. Issue 25 (1st July 2020)

• Record Type: Journal Article
• Authors: Aydin, Ziya; Keles, Mustafa
• Is Part Of: ChemistrySelect. Volume 5:Issue 25(2020)
• Page Start: 7375
• Page End: 7381
• Publication Date: 2020-07-01
• Subjects: Cinnamaldehyde -- Colorimetric -- Copper(II) -- Schiff base -- Sensor; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202001041
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Two new Schiff base derivatives N, N‐dimethyl‐4‐((2‐(phenylthio) phenyl)imino)propenyl)aniline (CSP ) and 2‐(4‐(dimethylamino)phenyl) allylidene) amino)benzenethiol (CSH ) were synthesized. Sensing mechanism of the sensors was investigated using UV‐Vis spectroscopy in the presence of various metal ions. The sensor CSP shows high sensitivity and selectivity to Cu 2+ over a wide range of other metal ions in acetonitrile (ACN)/water (H2 O) (v/v 2 : 1). The sensor CSP can detect Cu 2+ ions by color change from yellow to pink. The complex stoichiometry between the sensor, CSP, and Cu 2+ was found to be 2 : 1 and the binding constant was calculated to be 2.40 × 10 10 M −2 . The absorbance detection limit of CSP for Cu 2+ was determined as 2.85 × 10 −6 M. The sensor, CSP, was also applied to real samples successfully. Abstract : Two new cinnamaldehyde‐based Schiff base derivatives CSP (N, N‐dimethyl‐4‐((2‐(phenylthio) phenyl)imino)propenyl)aniline) and CSH (2‐(4‐(dimethylamino)phenyl) allylidene) amino)benzenethiol) were synthesized as colorimetric sensors. The sensor CSP is highly sensitive and selective to Cu 2+ over a wide range of other metal ions in acetonitrile (ACN)/water (H2 O) (v/v 2 : 1). CSP can detect Cu 2+ ions with low LOD and also be used to determine Cu 2+ ions in the real samples.