Synthesis of ultrasmall Fe-based nanoparticles with tunable magnetic properties: the effect of NHC ligands
Year: 2026
Type: article
Abstract: -imidazol-2-ylidene (IMes) ligand. The nature of the Fe organometallic precursors along with the presence of secondary ligands (palmitic acid and hexadecylamine) allowed the size of the nanoparticles and their magnetic properties to be adjusted. The nanoparticles were characterized by TEM, XRD, SAXS, WAXS, XPS, and VSM. The structural and surface studies led to the identification of a β-Mn type crystalline structure for all the Fe NPs, as well as the confirmation of the NHC coordination to the NP surface. Finally, magnetic measurements led to the determination of the NHC effect on the magnetic properties; the strong binding at the surface indeed reduces magnetization. This work establishes NHCs as robust ligands for stabilizing Fe-based nanoparticles, opening new avenues for the rational design of earth-abundant magnetic nanomaterials.
Source: Nanoscale
DOI: 10.1039/d6nr02163h
Institutions: Centre National de la Recherche Scientifique, Institut National des Sciences Appliquées de Toulouse, Laboratoire de Physique et Chimie des Nano-Objets, Université de Toulouse, Université de Poitiers, Institut de Chimie des Milieux et des Matériaux de Poitiers, Institut Universitaire de France, Universidad Nacional de Colombia
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7167926595