NHC stabilized copper nanoparticles via reduction of a copper NHC complex

Robert Richstein; Constantin Eisen; Lingcong Ge; Monnaya Chalermnon; Florian Mayer; Bernhard K. Keppler; Jia Min Chin; Michael R. Reithofer

doi:10.1039/D3CC02745G

NHC stabilized copper nanoparticles via reduction of a copper NHC complex†

Robert Richstein,‡^a Constantin Eisen,

‡^a Lingcong Ge,

^a Monnaya Chalermnon,

^a Florian Mayer,

^b Bernhard K. Keppler,^a Jia Min Chin

*^c and Michael R. Reithofer

*^a

Author affiliations

* Corresponding authors

^a Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 42, Vienna 1090, Austria
E-mail: michael.reithofer@univie.ac.at

^b Institute of Materials Chemistry and Research, Faculty of Chemistry, University of Vienna, Währinger Straße 42, Vienna 1090, Austria

^c Institute of Inorganic Chemistry – Functional Materials, University of Vienna, Währinger Straße 42, Vienna 1090, Austria
E-mail: jiamin.chin@univie.ac.at

Abstract

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 NH₃·BH₃ 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_xO with concomitant release of the stabilizing NHC ligand.

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DOI: https://doi.org/10.1039/D3CC02745G
Article type: Communication
Submitted: 08 Jun 2023
Accepted: 11 Jul 2023
First published: 11 Jul 2023
This article is Open Access

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Chem. Commun., 2023,59, 9738-9741

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NHC stabilized copper nanoparticles via reduction of a copper NHC complex

R. Richstein, C. Eisen, L. Ge, M. Chalermnon, F. Mayer, B. K. Keppler, J. M. Chin and M. R. Reithofer, Chem. Commun., 2023, 59, 9738 DOI: 10.1039/D3CC02745G

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Chemical Communications

NHC stabilized copper nanoparticles via reduction of a copper NHC complex†

Abstract

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NHC stabilized copper nanoparticles via reduction of a copper NHC complex

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