Back to Search
Start Over
Improving Ion Selectivity of 1,4,7-Triazacyclononane-Based Receptor by Zinc Coordination: “Turn-On” Chemosensor for Br–and Fe3+Ions
- Source :
- Langmuir; November 2020, Vol. 36 Issue: 44 p13218-13226, 9p
- Publication Year :
- 2020
-
Abstract
- Ion-responsive probes have gathered significant attention because of health and environmental factors, but there are few reports on the “turn-on” mechanism of Fe3+and sensitive detection of Br–by fluorescence measurement. Herein, a green luminescence material, N-5-acetyl-2-hydroxy-benzamide-1,4,7-triazacyclononane (btacn), was successfully synthesized for the first time and comprehensively characterized. As expected, btacn exhibits high sensitive, but nonspecific, extensive interaction with Cu2+, Co2+, Zn2+, Mn2+, and Fe3+ions. Therefore, to improve the specificity of the probe, we tried to synthesize transition metal complexes of btacn, but all failed except Zn(btacn)Cl2. In addition, the preformed complex, Zn(btacn)Cl2, was used as a special “turn-on” chemosensor for detecting trace amounts of Br–and Fe3+. The electrostatic interaction with Fe3+and the hydrogen bond of PhO-H···Br–leads to obvious changes in the electronic cloud of Zn(btacn)Cl2, which are reflected in different spectral responses.
Details
- Language :
- English
- ISSN :
- 07437463 and 15205827
- Volume :
- 36
- Issue :
- 44
- Database :
- Supplemental Index
- Journal :
- Langmuir
- Publication Type :
- Periodical
- Accession number :
- ejs54485254
- Full Text :
- https://doi.org/10.1021/acs.langmuir.0c02072