| 초록 |
Polymer/nanoparticles (NPs) hybrid materials, nanocomposites, have been investigated for many years due to their fascsinating features. To achieve the compatibility between NPs and polymer matrix, thiol-terminated polymeric ligands have been used for tuning the surface property of the NPs. However, in case of Au NPs, Au-thiol bond is unstable above 60 °C. To obtain the thermally-stable Au NPs, we designed photo crosslinkable polymeric ligands which have various ligand lengths and are selective to homopolymer matrix. As the ligands length was changed, the phase behaviors of Au NPs in both homopolymer thin film and bulk sample were significantly different. For example, the nanoparticles become more dispersed within the polymer matrix with longer polymer ligands, while they are aggregates when shorter ligands were used. In this work, such phase behaviors were systematically investigated using the cross-sectional transmission electron microscopy. |
