A high selective “turn-on” fluorescent chemosensor for detection of Zn2+ in aqueous media

• DOI: 10.1007/s11696-021-01684-x
• Publication Date: 2021-05-18T01:02:15Z
• Authors: Juan Li; Shu-Zhen Zhang; Geng Guo; Hao-Ran Jia; Yin-Xia Sun
• Keywords: Salicylaldehyde; Proton NMR; Stoichiometry

A simple Schiff base fluorescent probe (SW) composed of oxime and salicylaldehyde units was designed synthesized. The has high selectivity sensitivity for Zn2+ ion in mixed solvent (DMSO/H2O, V/V = 9:1). fluorescence obvious redshift phenomenon visible color change. stoichiometric ratio the to confirmed be 1:2 (mole) by 1H NMR, MS analysis job curves. And detection limit response SW is down 2.53 × 10–8 mol/L. At same time, can applied test paper ions under 365 nm UV light actual water samples.