Metallic behaviour of acid doped highly conductive polymers† †Electronic supplementary information (ESI) available: Experimental details for polymer synthesis, SAXS/WAXS, mobility of charge carriers and σ(T) measurements, supplementary UV-vis-NIR spectra, XPS overview spectra. See DOI: 10.1039/c4sc02463j Click here for additional data file.

The deposition and synthesis of PEDOT:OTf are described in the experimental section. The polymerization parameters were chosen according to previous work from Murphy et al.1–4 The effects of the addition of PEG-PPG-PEG to the solvent have been widely described in their work. The polymerization occurs from temperature as low as 30 °C. However, such low temperatures result in low values of electrical conductivity and/or thicknesses. Figure S1 shows  obtained for various polymerization temperatures from 40 °C to 90 °C. In the experimental conditions, the highest  (1218 S cm-1) is reached for a polymerization temperature of 70 °C.