A Small Molecule Fluorescent Probe for the Detection of Zn2+ and Alcoholic Strength in Chinese Baijiu

Abstract In this study, a novel fluorescent probe DZ was designed by derivatizing from naphthaldehyde and benzoyl hydrazine. The probe exhibited a low detection limit of 1.75×10 −8 mol/L for Zn 2+ in ethanol systems. Due to its typical aggregation‐induced emission phenomenon, DZ showed exceptional efficacy in detecting the alcoholic strength of Chinese Baijiu, allowing for accurate differentiation between beverages with various alcohol contents in water/ethanol mixtures. In addition, DZ had been successfully utilized for the detection of Zn 2+ in both test paper and environmental water samples.