Preparation, structure, and a coarse-grained molecular dynamics model for dodecanethiol-stabilized gold nanoparticles
| Autor: | S. I. Bogatyrenko, Andrey O. Doroshenko, Alexander Kyrychenko, Galina V. Karpushina, A. P. Kryshtal |
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| Rok vydání: | 2011 |
| Předmět: |
Nanostructure
Ligand Chemistry Aqueous two-phase system Nanoparticle Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Biochemistry 0104 chemical sciences Molecular dynamics Colloidal gold Phase (matter) Graphite Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | Comput. Theor. Chem. |
| ISSN: | 2210-271X |
| DOI: | 10.1016/j.comptc.2011.09.003 |
| Popis: | Thiol-stabilized metal nanoparticles possess unique properties in the comparison with larger-scale materials, which enable their use in many promising chemical and biological applications. We have synthesized thiol-coated colloidal gold nanoparticles (AuNP) soluble in non-polar organic solvents by a simplified procedure, in which AuCl 4 - was initially reduced in aqueous phase and then coated with thiol residues and transferred to organic phase. Using the transmission electron micrograph (TEM) imaging, the average diameter of a dodecanethiol-stabilized AuNP was estimated to be 3.75 ± 0.06 nm. Based on the experimental TEM data, a new coarse-grained molecular dynamics model of AuNP was developed. The model was applied for studying self-assembly of AuNPs on a flat graphite surface, enabling further elucidating the structure and packing of the ligand shell around the spherical nanoparticle core. |
| Databáze: | OpenAIRE |
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