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Advanced Materials

Polypyrrole-dodecylsulfate: 2 × 104 cycles with an organic electrochromic material in a Basic Medium


  • MAP acknowledges a fellowship from FAPESP (Grant N. 88/3084-7) and also financial support from ICTP/Trieste.


The remarkable stability of the electrochromic title compound in aqueous base (KOH) has been demonstrated over 2 · 104 charge/dischage cycles. Conducting polymer films containing inorganic anions usually show high sensitivity to water, losing activity rapidly, but the dodecylsulfate surfactant anion improves the stability to the extent that efficient cycling is possible even in basis media.

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