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A Highly Selective Turn-On Fluorescent Probe for the Detection of Zinc
- Source :
- Molecules, Volume 26, Issue 13, Molecules, Vol 26, Iss 3825, p 3825 (2021)
- Publication Year :
- 2021
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2021.
-
Abstract
- A novel turn-on fluorescence probe L has been designed that exhibits high selectivity and sensitivity with a detection limit of 9.53 × 10−8 mol/L for the quantification of Zn2+. 1H-NMR spectroscopy and single crystal X-ray diffraction analysis revealed the unsymmetrical nature of the structure of the Schiff base probe L. An emission titration experiment in the presence of different molar fractions of Zn2+ was used to perform a Job’s plot analysis. The results showed that the stoichiometric ratio of the complex formed by L and Zn2+ was 1:1. Moreover, the molecular structure of the mononuclear Cu complex reveals one ligand L coordinates with one Cu atom in the asymmetric unit. On adding CuCl2 to the ZnCl2/L system, a Cu-Zn complex was formed and a strong quenching behavior was observed, which inferred that the Cu2+ displaced Zn2+ to coordinate with the imine nitrogen atoms and hydroxyl oxygen atoms of probe L.
- Subjects :
- inorganic chemicals
crystal structure
Quenching (fluorescence)
Schiff base
Imine
Pharmaceutical Science
Organic chemistry
Crystal structure
Fluorescence
Article
Analytical Chemistry
chemistry.chemical_compound
Crystallography
QD241-441
chemistry
Chemistry (miscellaneous)
fluorescent probe
Drug Discovery
Molecular Medicine
Molecule
Physical and Theoretical Chemistry
Spectroscopy
Single crystal
titration experiments
Subjects
Details
- Language :
- English
- ISSN :
- 14203049
- Database :
- OpenAIRE
- Journal :
- Molecules
- Accession number :
- edsair.doi.dedup.....88bcc4f90d30a9314ed40a9eecd9fc37
- Full Text :
- https://doi.org/10.3390/molecules26133825