Synthesis and Characterization of an Al3+-Selective Fluorescent Probe

Abstract

A new Schiff base compound derived from benzoyl hydrazine has been synthesized and characterized as an Al3+-selective fluorescent probe. Compared to other common metal ions, the proposed probe shows high affinity and sensitibity towards Al3+, and complexing with Al3+ 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 Al3+ from 5.0´10-7 M to 4.5´10-6 M with a detection limit of 1.1´10-7 M.

Keywords

• Al3+
• Fluorescent probe
• Schiff base
• Fluorescent enhancement
• Synthesis.