Schiff Base Ligand Coated Gold Nanoparticles for the Chemical Sensing of Fe(III)‎ Ions

الملخص EN

New Schiff base-coated gold nanoparticles (AuNPs) of type AuNP@L (where L: thiolated Schiff base ligand) have been synthesized and characterized using various spectroscopic techniques.

The AuNPs and AuNP@L were imaged by transmission electron microscopy (TEM) and were confirmed to be well-dispersed, uniformly distributed, spherical nanoparticles with an average diameter of 8–10 nm.

Their potential applications for chemosensing were investigated in UV-Vis and fluorescence spectroscopic studies.

The AuNP@L exhibited selectivity for Fe3+ in an ethanol/water mixture (ratio 9 : 1 v/v).

The absorption and emission spectral studies revealed a 1 : 1 binding mode for Fe3+, with binding constants of 8.5 × 10 5 and 2.9 × 10 5 M−1, respectively.