| 초록 |
It is known that amphiphilic gold nanoparticles (AuNPs) functionalized with hydrophilic and hydrophobic ligands are adsorbed at the hexane-water interface. Depending on the ligand ratios on the AuNP surface, the different adsorption behaviors of amphiphilic AuNPs at the interface can be observed. In this study, we investigate the adsorption behavior of amphiphilic AuNPs with a different type of hydrophobic ligands on AuNPs at the hexane-water interface. Here, 11-Mercaptoundecanoic acid (MUA) is used as hydrophilic ligand, and 1-dodecanethiol (DDT), 1-tetradecathiol (TDT), 1-octadecanethiol (ODT) were used as hydrophobic ligands. We found that all samples follow the Langmuir isotherm model, and thus the equilibrium constant (K), maximum uptake concentration (Cmax), and occupying area of closely packed of AuNPs at the interface could be estimated. |
