Bidentate Acyclic Diamino Carbene-Stabilized Gold Nanoparticles from Symmetric and Asymmetric Gold(I) Complexes:  Synthesis, Characterization, and Catalytic Activity

Sophie R Thomas; Tristan T Y Tan; Guilherme M D M Rubio; Monnaya Chalermnon; Jia Min Chin; Michael R Reithofer

doi:10.1021/acs.inorgchem.5c03050

Bidentate Acyclic Diamino Carbene-Stabilized Gold Nanoparticles from Symmetric and Asymmetric Gold(I) Complexes: Synthesis, Characterization, and Catalytic Activity

Sophie R Thomas
, Tristan T Y Tan
, Guilherme M D M Rubio
, Monnaya Chalermnon
, Jia Min Chin (Korresp. Autor*in)
, Michael R Reithofer (Korresp. Autor*in)

Veröffentlichungen: Beitrag in Fachzeitschrift › Artikel › Peer Reviewed

Abstract

A series of gold nanoparticles (AuNPs) stabilized by bidentate acyclic diamino carbenes (ADCs) were synthesized via the reduction of dimeric gold(I) complexes. The resulting ADC-AuNPs were characterized by NMR spectroscopy, UV-vis spectroscopy, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA), revealing nanoparticles with a narrow size distribution and sizes ranging from 1.7 to 3.3 nm. This synthetic approach was extended to an asymmetric dinuclear ADC-gold(I) complex, affording slightly larger AuNPs (∼4 nm) upon reduction. The ADC-AuNPs with shorter linkers exhibited significant catalytic activity for the reduction of 4-nitrophenol, demonstrating a versatile and efficient route to catalytically active gold nanoparticles stabilized by both symmetric and asymmetric ADC ligands.

Originalsprache	Englisch
Seiten (von - bis)	19316-19324
Seitenumfang	9
Fachzeitschrift	Inorganic Chemistry
Jahrgang	64
Ausgabenummer	38
DOIs	https://doi.org/10.1021/acs.inorgchem.5c03050
Publikationsstatus	Elektronische Veröffentlichung vor Drucklegung - 12 Sept. 2025

Fördermittel

M.R.R. and J.M.C. thank the University of Vienna for financial support. All authors thank the NMR Center, Microanalysis Services, the Core Facility “Interface Characterization”, Core Facility “Core Facility Crystal Structure Analysis”, Faculty of Chemistry, University of Vienna, and Dr. Tim Gruene for help with single-crystal structure measurements. This project was supported by the Austrian Science Fund (FWF) stand-alone grant no. 10.55776/P34662 (M.R.R.) and Austrian Science Fund (FWF) ESPRIT grant no. 10.55776/ESP708 (S.R.T.). This work was also in part funded by the European Research Council (ERC) under the Horizon 2020 Excellent Science ERC program (Grant agreement No. 101002176, J.C). M.C. acknowledges the Ernst Mach Grant - ASEA-UNINET supported by OeAD Austria's Agency for Education and Internationalisation. This research was also supported by the Scientific Service Units of IST Austria through resources provided by Electron Microscopy Facility.

Träger	Trägernummer
Fonds zur Förderung der wissenschaftlichen Forschung (FWF)	101002176

ÖFOS 2012

104003 Anorganische Chemie
210006 Nanotechnologie

Zugriff auf Dokument

10.1021/acs.inorgchem.5c03050Lizenz: CC BY 4.0

https://phaidra.univie.ac.at/o:2186958Lizenz: CC BY 4.0

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Zitationsweisen

Thomas, S. R., Tan, T. T. Y., Rubio, G. M. D. M., Chalermnon, M., Chin, J. M., & Reithofer, M. R. (2025). Bidentate Acyclic Diamino Carbene-Stabilized Gold Nanoparticles from Symmetric and Asymmetric Gold(I) Complexes: Synthesis, Characterization, and Catalytic Activity. Inorganic Chemistry, 64(38), 19316-19324. Vorzeitige Online-Publikation. https://doi.org/10.1021/acs.inorgchem.5c03050

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title = "Bidentate Acyclic Diamino Carbene-Stabilized Gold Nanoparticles from Symmetric and Asymmetric Gold(I) Complexes: Synthesis, Characterization, and Catalytic Activity",

abstract = "A series of gold nanoparticles (AuNPs) stabilized by bidentate acyclic diamino carbenes (ADCs) were synthesized via the reduction of dimeric gold(I) complexes. The resulting ADC-AuNPs were characterized by NMR spectroscopy, UV-vis spectroscopy, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA), revealing nanoparticles with a narrow size distribution and sizes ranging from 1.7 to 3.3 nm. This synthetic approach was extended to an asymmetric dinuclear ADC-gold(I) complex, affording slightly larger AuNPs (∼4 nm) upon reduction. The ADC-AuNPs with shorter linkers exhibited significant catalytic activity for the reduction of 4-nitrophenol, demonstrating a versatile and efficient route to catalytically active gold nanoparticles stabilized by both symmetric and asymmetric ADC ligands.",

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doi = "10.1021/acs.inorgchem.5c03050",

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Bidentate Acyclic Diamino Carbene-Stabilized Gold Nanoparticles from Symmetric and Asymmetric Gold(I) Complexes: Synthesis, Characterization, and Catalytic Activity. / Thomas, Sophie R; Tan, Tristan T Y; Rubio, Guilherme M D M et al.
in: Inorganic Chemistry, Band 64, Nr. 38, 12.09.2025, S. 19316-19324.

Veröffentlichungen: Beitrag in Fachzeitschrift › Artikel › Peer Reviewed

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AU - Thomas, Sophie R

AU - Tan, Tristan T Y

AU - Rubio, Guilherme M D M

AU - Chalermnon, Monnaya

AU - Chin, Jia Min

AU - Reithofer, Michael R

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AB - A series of gold nanoparticles (AuNPs) stabilized by bidentate acyclic diamino carbenes (ADCs) were synthesized via the reduction of dimeric gold(I) complexes. The resulting ADC-AuNPs were characterized by NMR spectroscopy, UV-vis spectroscopy, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA), revealing nanoparticles with a narrow size distribution and sizes ranging from 1.7 to 3.3 nm. This synthetic approach was extended to an asymmetric dinuclear ADC-gold(I) complex, affording slightly larger AuNPs (∼4 nm) upon reduction. The ADC-AuNPs with shorter linkers exhibited significant catalytic activity for the reduction of 4-nitrophenol, demonstrating a versatile and efficient route to catalytically active gold nanoparticles stabilized by both symmetric and asymmetric ADC ligands.

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