Synthesis and Characterization of an Al 3+ -Selective Fluorescent Probe

A new Schiff base compound derived from benzoyl hydrazine has been synthesized and characterized as an Al 3+ -selective fluorescent probe. Compared to other common metal ions, the proposed probe shows high affinity and sensitibity towards Al 3+ , and complexing with Al 3+ triggers a prominent fluorescence enhancement at 443 nm, accompanied by the change in the absorption spectrum in ethanol phase. With the optimized experimental conditions, the probe exhibited a dynamic response range for Al 3+ from 5.0×10 -7 M to 4.5×10 -6 M with a detection limit of 1.1×10 -7 M. Copyright © 2015 IFSA Publishing, S. L.