In Situ Spectroelectrochemical Study of Positively and Negatively Charged States in a Donor/Acceptor EDOT/Benzotriazole-Based Polymer

Meana-Esteban B., Balan A., Baran D., Neugebauer H., Toppare L., Sariciftci N. S.

MACROMOLECULAR CHEMISTRY AND PHYSICS, cilt.212, sa.22, ss.2459-2466, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 212 Sayı: 22
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1002/macp.201100322
  • Dergi Adı: MACROMOLECULAR CHEMISTRY AND PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2459-2466
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Positively and negatively charged states in cPBEBT, which consists of EDOT/benzotriazole/EDOT as the building block, are studied using CV, in situ UV-Vis, and FTIR-ATR spectroscopy. The results show that cPBEBT is an ambipolar D-A-type polymer capable of conducting both holes and electrons. The injected positive and negative charges are distributed over the whole polymer backbone, which is proven by in situ FTIR-ATR where spectral signatures associated with the benzotriazole unit are observed in both p- and n-doped cPBEBT. HOMO and LUMO values obtained from CV and FTIR-ATR experiments during oxidation and reduction are compared. cPBEBT is an example of the D-A approach towards the improvement of the electronic properties of the resultant polymer.