Sensors, Vol. 19, Pages 4514: A New pH-Dependent Macrocyclic Rhodamine B-Based Fluorescent Probe for Copper Detection in White Wine

Sensors, Vol. 19, Pages 4514: A New pH-Dependent Macrocyclic Rhodamine B-Based Fluorescent Probe for Copper Detection in White Wine
Sensors doi: 10.3390/s19204514
Authors:
Nour Doumani
Elias Bou-Maroun
Jacqueline Maalouly
Maya Tueni
Adrien Dubois
Claire Bernhard
Franck Denat
Philippe Cayot
Nicolas Sok

For efficiently measuring copper (II) ions in the acidic media of white wine, a new chemosensor based on rhodamine B coupled to a tetraazamacrocyclic ring (13aneN4CH2NH2) was designed and synthesized by a one-pot reaction using ethanol as a green solvent. The obtained chemosensor was characterized via NMR, UV and fluorescent spectra. It was marked with no color emission under neutral pH conditions, with a pink color emission under acidic conditions, and a magenta color emission under acidic conditions where copper (II) ions were present. The sensitivity towards copper (II) ions was tested and verified over Ca2+, Ag+, Zn2+, Mg2+, Co2+, Ni2+, Fe2+, Pb2+, Cd2+, Fe3+, and Mn2+, with a detection limit of 4.38 × 10−8 M in the fluorescence spectrum.

Source: Sensors - October 16, 2019 Category: Biotechnology Authors: Nour Doumani Elias Bou-Maroun Jacqueline Maalouly Maya Tueni Adrien Dubois Claire Bernhard Franck Denat Philippe Cayot Nicolas Sok Tags: Article Source Type: research