Gold Nanoparticles Stabilized by Single Tripodal Ligands

Peters, Erich Henrik and Lehmann, Mario and Mayor, Marcel. (2018) Gold Nanoparticles Stabilized by Single Tripodal Ligands. Particle & Particle Systems Characterization, 35 (4). p. 1800015.

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Official URL: https://edoc.unibas.ch/68415/

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Abstract In order to coat the entire surface of gold nanoparticles (AuNPs) by a single ligand, tripodal macromolecules comprising benzylic thioethers coordinating to the AuNP surface are synthesized and their abilities to stabilize AuNPs are investigated. Out of the five studied ligands 1-5 , the tetraphenylmethane-based oligomers 4 and 5 display excellent AuNP coating features. Both ligand structures are able to control the dimensions of the AuNPs by stabilizing particles of narrow size distributions during their syntheses (1.05 ± 0.28 nm for Au-4 , and 1.15 ± 0.34 nm for Au-5 ). Closer inspection of these AuNPs by transmission electron microscopy and thermogravimetric analyses suggests that single ligands 4 and 5 are able to stabilize entire AuNPs. These particles Au-4 and Au-5 are obtained in good yields and display promising thermal stabilities (110 °C for Au-4 , and 95 °C for Au-5 ), making them interesting nanoscale inorganic-organic building blocks for further functionalization/processing by wet chemistry.
Faculties and Departments:05 Faculty of Science > Departement Chemie
05 Faculty of Science > Departement Chemie > Chemie > Molecular Devices and Materials (Mayor)
UniBasel Contributors:Mayor, Marcel and Peters, Erich Henrik and Lehmann, Mario
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:02 Jul 2019 13:13
Deposited On:02 Jul 2019 13:13

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