A novel imidazole‐derived Schiff base as selective and sensitive colorimetric chemosensor for fluorescent detection of Cu2+ in methanol with mixed aqueous medium

A highly efficient, selective, sensitive, and colorimetric chemosensor SB for Cu2+ detection with turn‐on fluorescence behavior in CH3–water solution was synthesized. A good enhancement of the intensity of fluorescence was detected by the incremental addition of Cu2+ after excitation at 286 nm. The...

Full description

Saved in:
Bibliographic Details
Published in:Applied organometallic chemistry 2021-11, Vol.35 (11), p.n/a
Main Authors: Slassi, Siham, Aarjane, Mohammed, Amine, Amina
Format: Article
Language:English
Subjects:
Aqueous solutions
Charge transfer
CHEF effect
Chelation
Chemical sensors
Chemistry
Chemoreceptors
chemosensor
colorimetric
Colorimetry
Copper
copper ion
Fluorescence
ICT
Imidazole
Imines
Isomerization
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A highly efficient, selective, sensitive, and colorimetric chemosensor SB for Cu2+ detection with turn‐on fluorescence behavior in CH3–water solution was synthesized. A good enhancement of the intensity of fluorescence was detected by the incremental addition of Cu2+ after excitation at 286 nm. The fluorescence quantum yield (Ф) of SB–Cu2+ was calculated for 0.41. The responsive mechanism of SB to copper ion is involved for on the combined effects of C═N isomerization and intramolecular charge transfer (ICT) process and chelation‐enhanced fluorescence (CHEF). The detection limit for the fluorescent chemosensor SB toward Cu2+ was 0.6 × 10−6 M. A new imidazole‐based Schiff base chemosensor SB was designed, synthetized, and characterized. The Schiff base shows high selective, sensitive, and colorimetric chemosensor for Cu2+ detection in methanol with aqueous medium. The selectivity mechanism of SB for Cu2+ was found to be based on the combined effects of the inhibition of intramolecular charge transfer (ICT) and chelation‐enhanced fluorescence (CHEF). The detection limit for the fluorescent chemosensor SB toward Cu2+ was 0.6 × 10−6 M.
ISSN:0268-2605
1099-0739
DOI:10.1002/aoc.6408