| 초록 |
We demonstrate that Ag and QD nanoparticles synthesized using hydrocarbon stabilizers in nonpolar solvent are directly phase-transferred to thiol-functionalized ionic liquids (ILSH) with low molecular weight (Mw) and short chain length. Therefore, we can prepare the Ag and QD nanoparticle fluids with liquid-like behavior based on ILSH showing the notable electrical conductivity and optical energy transfer. These phenomena are mainly caused by the narrow gap between nanoparticles stabilized by ILSH with low Mw and short chain length. Furthermore, in case of ILSH-QDs dispersed in water solvent, positively charged QDs can be acquired due to their cationic imidazolium group and easily controlled their concentration by adding water solvent. Therefore, ILSH-QDs can be electrostatically assembled with anionic polyelectrolytes (PEs) such as poly(sodium, 4-styrene-sulfonate) (PSS) using layer-by-layer (LbL) assembly method. |
