A chromogenic anion host 4, containing two amide functionalities linked to azo dye and tetrazole rings was synthesized and its complexes with various anions were investigated. The results show that receptor 4 can recognize selectively biologically important F- ion. The binding affinity for F- was investigated by naked-eye colour change, UV-Vis and 1H NMR spectroscopy. Addition F- ion in CH3CN and DMSO to receptor 4 cause a colour change solution from colorless to yellow. The stoichiometry for host:anion is 1:1. Furthermore, receptor 4 was used as ion carrier in ion-selective membrane electrodes. Selectivity of this membrane was studied toward various anions in water solution. Binding behaviour of receptor 4 towards several anions (Cl-, F-, Br-, I-) have been investigated using density functional theory calculations.
Authors
Additional information
- Category
- Publikacja w czasopiśmie
- Type
- artykuł w czasopiśmie wyróżnionym w JCR
- Language
- angielski
- Publication year
- 2013
