Figure 5.
PEDOT:PSS/iron oxide nanoparticle composite nanofilms transferred to various substrates: (a) freestanding PEDOT:PSS/Nanoparticle 5 nanofilm (2 cm × 1 cm) floating in water after PVA dissolution. (b) SEM micrographs showing PEDOT:PSS/Nanoparticles 1 nanofilm collected onto a steel mesh (scale bar 100 μm). Nanofilms collected onto (c) Teflon screw, (d) paper, (e) plastic tube, and (f) flexible PDMS. (g) SEM image of the edge of a nanofilm collected on paper showing the paper fiber structure to which the nanofilm conforms (scale bar 50 μm). (h) A picture and (i) the structure of the samples used for humidity-sensing studies. The samples were referred to as PEDOT:PSS/Nanoparticles x, denoting films prepared using a colloidal solution with a concentration of x mg mL−1 iron oxide nanoparticles (x = 0, 1, 5). Reprinted with permission from [45]. Copyright 2013, American Chemical Society.