| 초록 |
Block copolymers (BCPs) with perfluoro- or semifluoroalkyl sidechains have been extensively studied for their unique phase separation properties in the bulk state. However, these BCPs are largely limited to a few semifluorinated poly(methacrylate) derivatives due to the low solubility of such fluorine-rich polymers in common organic solvents. Herein, we report the synthesis and the in situ nanoparticlization of perfluoroalkylated polynorbornene BCPs through the ring-opening metathesis polymerizationb (ROMP). Spun-cast films from the BCP micelles undergo selective swelling of the fluorinated blocks when treated with a fluorous solvent, yielding homoporous thin films. By changing the degree of polymerization of the fluorine-rich blocks and pore generation parameters, the size, and morphology of the pores generated can be controlled, which, in turn, allows for the control of refractive indices of the thin films. |
