| 초록 |
We introduce top coat for the control of orientation, alignment and morphology of BCP thin films. Using partially hydrolyzed PVA top coats with a solvent annealing, perpendicular orientation of PS-b-PDMS can be obtained despite the large surface energy differences between PS and PDMS. Extremely straight and laterally aligned cylindrical microdomain of BCP films were prepared by simply covering the BCP films with top coats and dewetting the latter via thermal annealing to generate shear flow in the BCP underlayer. We also observed the gyriod-cylinder phase transition using interfacial-energy-tailored top-coat. At the optimized top-coat composition, gyroid nanostructures with sub-10 nm strut width were achieved down to ∼125 nm. For the superior thermoelectric properties of graphene and conducting polymers, sub-10-nm graphene nanomesh structures and in-situ vapor phase polymerization of PEDOT:Tos on highly ordered lamellar, cylindrical and disordered nanostructures from BCP/oxidant films. |
