Alkyne-Monofunctionalized Gold Nanoparticles as Massive Molecular Building Blocks

Peters, Erich Henrik and Mayor, Marcel. (2020) Alkyne-Monofunctionalized Gold Nanoparticles as Massive Molecular Building Blocks. European Journal of Inorganic Chemistry, 2020 (24). pp. 2325-2334.

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Official URL: https://edoc.unibas.ch/80535/

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Using a tripodal, thioether-based ligand comprising a remote protected acetylene, we efficiently stabilize small gold nanoparticles (o approximate to 1.2 nm) which are isolated and purified by chromatography. The 1:1 ligand-to-particle ratio is obtained by comparing the particles' dimensions measured by transmission electron microscopy with the weight fraction of the coating ligand determined by thermogravimetric analysis. The single ligand coating of the gold particle guarantees the presence of a single masked alkyne per particle. It can be addressed by wet chemical protocols providing the particles with the properties of "massive molecules". The "massive molecule" nature of the particles is demonstrated by involving them in wet chemical coupling protocols like oxidative acetylene coupling providing gold nanoparticle dimers (34 % isolated yield) or alkyne-azide "click"-chemistry with a suitable triazide, giving trimeric particle architectures (30 % determined by transmission electron microscopy). The particle stabilization obtained by the coating ligand allows, for the first time, to treat these multi-particle architectures by size exclusion chromatography.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Molecular Devices and Materials (Mayor)
UniBasel Contributors:Mayor, Marcel and Peters, Erich Henrik
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:07 Feb 2023 10:23
Deposited On:11 Mar 2021 11:26

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