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Keywords:

  • 3,4-Ethylenedioxythiophene (EDOT);
  • Doping, n-type;
  • Electrochromism;
  • Pyridine derivatives

A family of polymers based on alternating bi-EDOT and pyridine units is reported. Poly(BEDOT-PyrPyr-Ph2), with a bandgap of 1.2 eV, has four electrochemically accessible colors (dark gray, burgundy, lime green, and light gray) each corresponding to a distinct redox state. In-situ conductance measurements illustrate high n-type doping conductances only thirty times less than those of the p-type doping conductances.