| 초록 |
Diblock copolymers composed of two different polymers form nanometer-sized micelles consisting of a soluble corona and an insoluble core in a selective solvent for one of the blocks. These micelles can be coated onto substrates by spin-coating to form a self-assembled nanostructure, which can serve as a structured template of nanoparticles. In this study, we demonstrated a self-assembly of two different types of nanoparticles simultaneously directed on a monolayer film of diblock copolymer micelles via physical and chemical arrangements. We first incorporated gold nanoparticles physically around the micelles of a monolayer film of PS-PVP micelles having a short-range hexagonal order. Then, iron oxide nanoparticles were synthesized chemically in the PVP core area of the ordered micelles, resulting in a mosaic nanopattern of magnetic iron oxide nanoparticles surrounded by metallic gold nanoparticles. Thus, we were able to direct two kinds of nanoparticles to self-assemble in the specific positions as an example of controlled fabrication of nanometer-sized building block. |
