A Natural Light Visible Colorimetric Responses Fluorescent Probe for Hydrazine Detection

Abstract

A natural light visible colorimetric responses fluorescent probe (Probe 1) was developed for N₂H₄ detection. The recognition mechanism of Probe 1 for hydrazine is based on addition-cyclization. The LOD of Probe 1 for N₂H₄ was 80.3 nM (0.0026 mg/L), which is below the national limited standard (0.02 mg/L). When various concentrations of N₂H₄ were added, the color of the Probe 1 solution was graded gradually from yellow to colorless, which could be observed under natural light. The changing course only takes 5 min. Furthermore, Probe 1 was successful applied to detect N₂H₄ in mineral water, seawater, tap water and river water. The obtained recovery ranged from 91.91 – 100.00%. Probe 1 has great potential, developed as a visual tool for N₂H₄ rapid detection.