| 초록 |
Poly(3,4-ethylenedioxythiophene) (PEDOT) and its composites have been widely studied because of high electrical conductivity. PEDOT and polystyrene sulfonate (PSS) composite (PEDOT:PSS) is the most famous example. PSS can act as a polymeric surfactant, stabilize the doped state of PEDOT, and make a stable aqueous dispersion. Commercially available PEDOT:PSS usually has PSS more than 50% in weight. However, considering the insulating nature of PSS, engineering of the surfactant can be a direction to tune the properties of PEDOT composites. In this work, we investigated the effects of surfactants and oxidative polymerization conditions in PEDOT composites on their properties. We varied the structures and compositions of the surfactants, acidity, and ion contents during emulsion polymerization of PEDOT. The electrical properties and morphology of composites were investigated, and the related mechanisms were studied through electrical, spectroscopic, and morphological analyses. |
