Direct Synthesis of Mesoionic Carbene (MIC)-Stabilized Gold Nanoparticles from 1,2,3-Triazolium Salts - Méthodes et Application en Chimie Organique
Article Dans Une Revue Chemistry of Materials Année : 2023

Direct Synthesis of Mesoionic Carbene (MIC)-Stabilized Gold Nanoparticles from 1,2,3-Triazolium Salts

Omar Sadek
Philippe Marcus
Clément Chauvier
Louis Fensterbank

Résumé

Significant achievements have been reported in the last few years regarding the stabilization and functionalization of gold nanoparticles (AuNPs), mainly through the use of thiols and imidazolylidene N-heterocyclic carbene-capping ligands. Herein, we report that mesoionic carbene (MIC) ligands, based on the 1,2,3-triazol-5-ylidene scaffold, allow the expeditive preparation of AuNPs of very high stability through a simple and straightforward one-pot protocol directly from triazolium salts and separated Au(III) sources. Control over the size of AuNPs has been achieved by varying the Au/ligand ratio as well as the nature of the triazolium salts, the latter being facilitated by the ease of synthesis of the MIC precursors through click chemistry. Characterization of these MIC-AuNPs by 13C solid-state (ss) NMR and X-ray photoelectron spectroscopy (XPS) hints at the exclusive presence of MICs on the surface of nanoparticles solely comprising Au(0).

Domaines

Matériaux
Fichier principal
Vignette du fichier
P127-ChemMater23-asap-deformated (1).pdf (4.06 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04185135 , version 1 (08-11-2022)
hal-04185135 , version 2 (22-08-2023)

Identifiants

Citer

Alexandre Porcheron, Omar Sadek, Salem Ba Sowid, Nathalie Bridonneau, Laura Hippolyte, et al.. Direct Synthesis of Mesoionic Carbene (MIC)-Stabilized Gold Nanoparticles from 1,2,3-Triazolium Salts. Chemistry of Materials, 2023, 35 (17), pp.6865-6876. ⟨10.1021/acs.chemmater.3c01162⟩. ⟨hal-04185135v2⟩
366 Consultations
206 Téléchargements

Altmetric

Partager

More