期刊
DALTON TRANSACTIONS
卷 47, 期 19, 页码 6850-6859出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8dt00416a
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资金
- LabEx MiChem, French state funds [ANR-11-IDEX-0004-02]
- Labex MATISSE, French state funds [ANR-11-IDEX-0004-02]
A simple and straightforward synthesis of N-heterocyclic carbene (NHC)-protected gold nanoparticles is derived from (benz)imidazolium-AuX4 complexes and NaBH4 only. The proposed method allows size tuning, from 3 to 6 nm, by adding (benz)imidazolium bromide. Changing the reducing agent to tBuNH(2)BH(3) shifts the size range to ca. 6-12 nm. A one pot protocol is also reported from AuCl, (benz)imidazolium bromides and NaBH4, thereby providing an even more straightforward way of producing NHC-capped gold nanoparticles. In addition, X-ray photoelectron spectroscopy (XPS) is used to unambiguously evidence, on the nanoparticles, the covalent bond formed between the NHC and the surface gold atoms.
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