8-Hydroxyquinoline-5-carbaldehyde Schiff-base as a highly selective and sensitive Al3+ sensor in weak acid aqueous medium

In the paper, a novel fluorescent sensor (1) based on 8-hydroxyquinoline carbaldehyde Schiff-base was synthesized and characterized. This fluorescent sensor exhibited high selectivity for Al3+ over other metal ions with the detection limit reaching below 10− 7 M under weak acid aqueous conditions. These suggested that 1 could be served as a highly selective and sensitive fluorescence sensor for aluminum ion in acid medium.

A novel fluorescent sensor (1) based on 8-hydroxyquinoline carbaldehyde Schiff-base was synthesized and characterized. This fluorescent sensor exhibited high selectivity for Al3+ over other metal ions with the detection limit reaching below 10− 7 M under weak acid aqueous conditions.Figure optionsDownload as PowerPoint slideResearch Highlights
► A novel 8-hydroxyquinoline carbaldehyde Schiff-base is synthesized.
► The Schiff-base exhibits higher selectivity and sensitivity for Al3+ in acid aqueous medium.
► The fluorescence sensor can be synthesized and performed easily.