3 years ago

Synthesis of π-Conjugated Polymer Thin Films by Electropolymerization of Benzodithiophene Derivatives

Synthesis of π-Conjugated Polymer Thin Films by Electropolymerization of Benzodithiophene Derivatives
Sho Wakana, Shinsuke Inagi, Hiroki Nishiyama, Ikuyoshi Tomita
π-conjugated polymer thin films are successfully prepared by the electropolymerization of 4,5-diaryl benzodithiophenes, which are readily obtained by the three-component coupling reactions of aryl iodides, 1,2-di(thiophen-2-yl)ethyne, and phenylboronic acid, followed by the photochemical annulation. The resulting polymer films exhibit π-conjugated properties as convinced from their UV–vis absorption spectra and cyclic voltammetric analyses. The electronic properties such as highest occupied molecular orbital (HOMO) energy levels of the resulting polymer films are affected by the 4-aryl substituents. The π-conjugated polymer thin films exhibit electrochromism, where the color of the polymer film turns from yellow to blue by oxidation. A new class of electrochemically polymerizable π-extended fused ring systems, 4,5-diaryl benzodithiophene derivatives, is prepared from simple building blocks by the three-component coupling reaction followed by the photochemical annulation. Their electropolymerization provides π-conjugated polymer thin films that exhibit clear electrochromic behavior.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/macp.201700123

You might also like
Never Miss Important Research

Researcher is an app designed by academics, for academics. Create a personalised feed in two minutes.
Choose from over 15,000 academics journals covering ten research areas then let Researcher deliver you papers tailored to your interests each day.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.