Low bandgap polymers by copolymerization of thiophene with benzothiadiazole.

@article{He2009LowBP,
  title={Low bandgap polymers by copolymerization of thiophene with benzothiadiazole.},
  author={Youjun He and Xiang Wang and Jing Zhang and Yongfang Li},
  journal={Macromolecular rapid communications},
  year={2009},
  volume={30 1},
  pages={45-51}
}
Three low bandgap copolymers of thiophene and benzothiadiazole with electron-donating and electron-withdrawing substituents, P1, P2, and P3, have been synthesized by Pd-catalyzed Stille-coupling. Electronic energy levels of the polymers are estimated by cyclic voltammetry. The polymer films show a broad absorption band in the wavelength range from 300 to… CONTINUE READING