Presentation Information
[22a-P03-32]Synthesis and Porous Thin Film Formation of Silsesquioxane-Containing Liquid Crystalline Block Copolymers
〇(M1C)Kotaro Morimoto1, Yuya Ishizaki1, Shusaku Nagano1 (1.Rikkyo Univ.)
Keywords:
Nanofluidic device,Azobenzene,Microphase separation
Liquid crystalline block copolymers, P5OAz10MA-b-PPOSS, with azobenzene (Az) and polyhedral oligomeric silsesquioxane (POSS) derivatives were synthesized by reversible addition–fragmentation chain transfer (RAFT) polymerization. P5OAz10MA-b-PPOSS thin films with Az cylinders in perpendicular direction to substrates were induced by nonpolarized visible light (430 nm) irradiation at 50 °C for 40 min. Porous silica thin films were prepared by oxygen plasma etching for direct decomposition of Az cylinders and oxidation of POSS moieties. Porous nanostructures and ion permeability of the silica thin films were investigated by atomic force microscopy (AFM) and cyclic voltammetry (CV) measurements.