Electrochemistry and Near-infrared Electrochromism of Electropolymerized Polydithiophenes with β, β′-Positions Bridged by Carbonyl or Dicarbonyl Substitute

- Polydithiophenes bridged by carbonyl or dicarbonyl substitute as two electron-acceptors were electrosynthesized from Lewis acidic electrolyte;.
- The growth of the two polymers were monitored by in situ spectroelectrochemical and microgravimetric methods;.
- The enhanced NIR electrochromics of the two polymers were found;.
- The two polymers are of comparable intermolecular spacings but different electrochemical and thermal stability.