Hydrogen-Bonding Recognition-Induced Colorimetric Determination of Hydrazine Based on the Tryptophan Capped Gold Nanoparticles

Figure 1

The schematic representation of the analytical process for detecting hydrazine. Insert: colorimetric visualization of the Trp-AuNPs generated in the absence of (a) and in the presence of hydrazine (b 2.0 × 10⁻⁴) in pH 5.0 PBS.