| 초록 |
Core/shell nanomaterials composed of only polypyrrole (PPy) were fabricated by microemulsion polymerization using two oxidants, and used as a precursor for polymer and carbon nanocapsules. The linear PPy core and surfactants could be removed by one-step solvent etching, and crosslinked PPy nanocapsules were obtained. The pore size and shell thickness of the polymer nanocapsules were tunable by controlling the feeding amount of monomers in each synthetic step. The diameter of polymer nanocapsules could also be controllable by changing the surfactant concentration and spacer length. The PPy nanocapsules had two mesopores, that is, the inner cavity and the mesochannel in the wall. PPy hollow nanospheres could be transformed into carbon nanocapsules through the carbonization. The ability to selectively encapsulate and release guest materials was examined by introducing a photochromic dye (pyrene) solution into the polymer and carbon nanocapsules in a different environment. |
