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 (Corresponding author)
, Michael R Reithofer (Corresponding author)

Publications: Contribution to journal › Article › 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.

Original language	English
Journal	Inorganic Chemistry
DOIs	https://doi.org/10.1021/acs.inorgchem.5c03050
Publication status	E-pub ahead of print - 12 Sept 2025

Funding

Funders	Funder number
Fonds zur Förderung der wissenschaftlichen Forschung (FWF)	101002176

Austrian Fields of Science 2012

104003 Inorganic chemistry
210006 Nanotechnology

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10.1021/acs.inorgchem.5c03050Licence: CC BY 4.0

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

Cite this

@article{876e082f29754077817aa14d4375cb4f,

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.",

author = "Thomas, \{Sophie R\} and Tan, \{Tristan T Y\} and Rubio, \{Guilherme M D M\} and Monnaya Chalermnon and Chin, \{Jia Min\} and Reithofer, \{Michael R\}",

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year = "2025",

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day = "12",

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

language = "English",

journal = "Inorganic Chemistry",

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T1 - Bidentate Acyclic Diamino Carbene-Stabilized Gold Nanoparticles from Symmetric and Asymmetric Gold(I) Complexes: Synthesis, Characterization, and Catalytic Activity

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

N1 - Accession Number WOS:001570874200001 PubMed ID 40939637

PY - 2025/9/12

Y1 - 2025/9/12

N2 - 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.

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.

U2 - 10.1021/acs.inorgchem.5c03050

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JF - Inorganic Chemistry

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