NHC stabilized copper nanoparticles via reduction of a copper NHC complex.
Robert RichsteinConstantin EisenLingcong GeMonnaya ChalermnonFlorian MayerBernhard K KepplerJia Min ChinMichael R ReithoferPublished in: Chemical communications (Cambridge, England) (2023)
The bottom-up synthesis of plasmonic NHC@CuNPs from common starting reagents, via the formation of the synthetically accessible NHC-Cu(I)-Br complex and its reduction by NH 3 ·BH 3 is reported. The resulting NHC@CuNPs have been characterized in detail by XPS, TEM and NMR spectroscopy. The stability of NHC@CuNPs was investigated under both inert and ambient conditions using UV-Vis analysis. While the NHC@CuNPs are stable under inert conditions for an extended period of time, the NPs oxidize under air to form Cu x O with concomitant release of the stabilizing NHC ligand.