Electrochromic and spectroelectrochemical properties of novel 4,4′-bipyridilium-TCNQ anion radical complexes

- New electrochromic materials monosubstituted 4,4′-bipyridilium-TCNQ anion radical salts (MBTS) were synthesized.
- Electrochromic devices based on MBTS were assembled for the first time.
- The mechanism of the electrochromism and electrochemistry of the ECD was proposed and discussed.
- The ECD exhibited a fast switching time, superior cycling stability and well electrochromic behavior.