Electrochromic devices based on poly(2,6-di(9Hcarbazol- 9-yl)pyridine)-type polymer films and PEDOT-PSS

Chung Wen Kuo, Bo Wei Wu, Jeng-Kuei Chang, Jui Cheng Chang, Li Ting Lee, Tzi Yi Wu*, Tsung Han Ho

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


2,6-Di(9H-carbazol-9-yl)pyridine (DiCP) was synthesized and its corresponding homopolymer (PDiCP) and copolymers (P(DiCP-co-CPDT), P(DiCP-co-CPDT2), P(DiCP-co-CPDTK), and P(DiCP-co-CPDTK2)) were synthesized electrochemically. The anodic copolymer with DiCP:cyclopentadithiophene ketone (CPDTK) = 1:1 feed molar ratio showed high transmittance change (ΔT%) and colouration efficiency (η), which were measured as 39.5% and 184.1 cm 2 C -1 at 1037 nm, respectively. Electrochromic devices (ECDs) were composed of PDiCP, P(DiCP-co-CPDT), P(DiCP-co-CPDT2), P(DiCP-co-CPDTK), and P(DiCP-co-CPDTK2) as anodically-colouring polymers, and poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid) (PEDOT-PSS) as cathodically-colouring polymers. P(DiCP-co-CPDTK)/PEDOT-PSS ECD showed light silverish-yellow at 0.0 V, light grey at 0.7 V, grey at 1.3 V, light greyish blue at 1.7 V, and greyish blue at 2.0 V. Moreover, P(DiCP-co-CPDTK)/PEDOT-PSS ECD presented high ΔT (38.2%) and high η (633.8 cm 2 C -1 ) at 635 nm.

Original languageEnglish
Article number604
Issue number6
StatePublished - 31 May 2018


  • Electrochemical polymerization
  • Electrochromic polymer
  • Optical contrast
  • Poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonic acid)
  • Spectroelectrochemistry

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