ArticleNanoscale2026
Seed-mediated synthesis of NHC-stabilised Cu@Au core-shell nanoparticles from an NHC-Au(I) complex.
Article in Nanoscale, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
8 authors.
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Abstract
N-heterocyclic carbenes (NHCs) provide a robust platform for the stabilisation and functionalisation of metal nanoparticles. Extending this ligand class to air-sensitive copper-based nanomaterials is particularly attractive, but remains challenging because copper nanoparticles readily oxidise under ambient conditions. Here, we report the seed-mediated synthesis of 9 nm copper-gold core-shell nanoparticles (CSNPs) with a ∼2 nm gold shell, prepared by reducing a NHC-Au(I) complex on pre-formed copper nanoparticle seeds. The resulting samples, denoted as IC12@CSNP and IC12@CSNPNHC, were characterised by X-ray Photoelectron Spectroscopy (XPS) and Surface-Enhanced Raman Spectroscopy (SERS), confirming surface binding of IC12 ligands. Scanning Transmission Electron Microscopy (STEM) and High-Resolution Transmission Electron Microscopy (HRTEM) verified the distinct gold shell and copper core. The gold shell helps preserve the metallic character of the copper core upon exposure to air. Both IC12@CSNP and IC12@CSNPNHC exhibit electrocatalytic activity for syngas production under CO
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