A red-emitting fluorescent probe based on flavone for hydrazine detection and its application in aqueous solution

On account of the biological harmfulness of hydrazine, we have designed and synthesized a novel red-emitting fluorescent probe (1) based on 3-hydroxyflavone. The probe could selectively and sensitively detect hydrazine over other primary amines, cations and anions. Moreover, we verified the mechanism of probe 1 for detecting hydrazine through a ¹H NMR titration and MS spectral analysis. Importantly, the probe could selectively detect hydrazine in different water samples which showed its potential for practical applications.