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Article Dans Une Revue Dalton Transactions Année : 2018

N-Heterocyclic carbene-stabilized gold nanoparticles with tunable sizes

Résumé

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 tBuNH2BH3 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

Domaines

Matériaux
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Dates et versions

hal-01867971 , version 1 (22-08-2023)

Identifiants

Citer

N. Bridonneau, L. Hippolyte, D. Mercier, D. Portehault, M. Desage-El Murr, et al.. N-Heterocyclic carbene-stabilized gold nanoparticles with tunable sizes. Dalton Transactions, 2018, 47 (19), pp.6850 - 6859. ⟨10.1039/C8DT00416A⟩. ⟨hal-01867971⟩
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