Microscale droplets covered by amphiphilic gold nanoparticles with various ligand ratios and concentrations
| العنوان: | Microscale droplets covered by amphiphilic gold nanoparticles with various ligand ratios and concentrations |
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| المؤلفون: | Chae-Rim Lee, Yeon-Geon Jung, Hee-Jin Lee, Hee-Young Lee, Ji Woong Chang |
| المصدر: | Soft Matter. 15:3949-3956 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Aqueous solution, Chemistry, Ligand, Langmuir adsorption model, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, 0104 chemical sciences, Hexane, chemistry.chemical_compound, symbols.namesake, Chemical engineering, Colloidal gold, Phase (matter), Amphiphile, symbols, 0210 nano-technology, Equilibrium constant |
| الوصف: | We describe a simple and reliable route for forming microscale droplets covered with amphiphilic gold nanoparticles (AuNPs) functionalized with mixed hydrophilic and hydrophobic ligands on the AuNP surface. When an aqueous solution of amphiphilic AuNPs was mixed with hexane, the hexane (or water) droplets covered with amphiphilic AuNPs in the water (or hexane) phase were created, in which amphiphilic AuNPs in water phase migrated to the hexane-water interface. The extent of AuNP migration to the interface could be tuned by the ratio of the hydrophobic to hydrophilic ligands on the AuNP surface and the overall concentration of AuNPs. Importantly, the extent of the AuNP migration to the interface depending on the AuNP concentration followed the Langmuir isotherm model well. The equilibrium constant and maximum uptake of AuNPs at the interface were estimated using the Langmuir isotherm model. To the best of our knowledge, this is the first report of the equilibrium constant determination of amphiphilic AuNPs at the liquid-liquid interface. Based on the maximum uptake of AuNPs at the hexane-water interface, we demonstrated that the AuNPs could be closely packed at the interface. |
| تدمد: | 1744-6848 1744-683X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::514280ae54008a3a3cd5ae1deb844b59 https://doi.org/10.1039/c9sm00505f |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....514280ae54008a3a3cd5ae1deb844b59 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17446848 1744683X |
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