| 초록 |
Diblock copolymers composed of two different polymers covalently linked spontaneously self-assemble into structures on the tens of nanometer length scale, whether in bulk or in a solution. In a selective solvent for one of the blocks, nanometer-sized micelles consisting of a soluble corona and an insoluble core are formed above the critical micelle concentration. These micelles can be coated onto substrates by spin coating to form a self-assembled nanostructure in a short-range hexagonal order, which can serve as a structured template of various nanoparticles. We first synthesized zinc oxide nanoparticles in the core area of the ordered micelles, from which photoluminescence was observed. Iron oxide nanoparticles were also synthesized by the same methodology, resulting in a magnetic nanopattern. Moreover, we were able to incorporate gold nanoparticles physically around the ordered micelles. Thus, it was possible to fabricate a mosaic nanopattern of magnetic iron oxide nanoparticles surrounded by metallic gold nanoparticles. Therefore, we were able to guide one or two types of nanoparticles to self-assemble in the specific positions as an example of controlled fabrication of nanometer-sized building blocks. |
