Phase changes in PS-b-P2VP reverse micelles by pressurized CO2 for nanostructure deposition

CO2 at room temperature and up to 1100psi was used to change the phase of micellar polystyrene-block-poly (2-vinylpyridine). FeCl3 filled micelles subjected to the process formed a phase which resulted in α - Fe2O3 nanowires after plasma etching. Particles which were subjected to only a brief CO2 process formed γ- Fe2O3