| 초록 |
We demonstrate a novel and unique method to control spontaneous organization of nanomaterials assisted by the patterned substrates that were fabricated by using phase-separated block copolymers (BCPs). The thin films of block copolymers having various chain lengths were prepared on a thin film of poly(vinyl alcohol) (PVA) by a spin-coating method. To induce the phase separation of block copolymers, these thin films were solvent-annealed with vapor of organic solvents (Tolene, THF, and Chloroform) in a closed chamber. After ethanol treatment for the surface reconstruction of BCP thin films, reactive ion etching (RIE) was performed to transfer nanometer-scale BCP line patterns to the underlying hydrophilic PVA film. Then, as a different type of BCP micelles whose sizes were fit with the separation distance between two PVA lines were deposited by simply spin-coating method, spherical BCP micelles were assembled along the PVA channels due to topological contrast and surface energy difference and used as a template either to synthesize nanoparticles or to load organic dyes into the cores of BCP micelles. |
