| 초록 |
Block copolymers (BCPs) have been attractive material for “bottom-up” approach for its distinct property, which it can perform nanoscale structures spontaneously in long-range alignment. Recently, surmounting the limits of sub-10 nm feature size in BCP self-assembly, tremendous attentions were brought up by many groups. In this study, we report a newly designed fluorine containing BCPs (polystyrene-b-poly(2,2,2-trifluoroethyl acrylate)) via anionic polymerization and transesterification. Flory-Huggins interaction parameter (χ) was evaluated by small-angle X-ray scattering (SAXS) which was higher than 0.2 over the entire temperature range and the evaluated linear-type χ is 30.86/T + 0.160, where T is absolute temperature. Film experiments were also demonstrated on a neutralized substrate where a sub-10 nm perpendicular lamellar morphology was observed with simple thermal annealing supported by top coat strategies. |
