Cu2+-driven metallo-supramolecular self-assembly and its application in sensing of hydroxyl ion

Abstract

The dinuclear copper complex receptor (R) was synthesized using the ligands 4-(di-ethyl-amino)- 2-hydroxybenzaldehyde and benzo [d] thiazol-2-amine. The single crystal X-ray analysis of the homoleptic bis(μ-oxo)dicopper (II) complex indicated that the ligands are coordinated in an anticonfiguration to each other and have adopted a distorted square-pyramidal environment around the Cu2+ ion. The X-ray solid state structural analysis and DFT reveals no direct Cu…..Cu linkage within the complex. The anion recognition ability of the R was studied by UV–vis and fluorescence spectroscopic in acetonitrile. The results indicated that the new complex R displays a sturdy sympathy and selectivity for hydroxide ion.