Intrinsically Stretchable Electrochromic Display by a Composite Film of Poly(3,4-ethylenedioxythiophene) and Polyurethane

Hiroyuki Kai, Wataru Suda, Yudai Ogawa, Kuniaki Nagamine, Matsuhiko Nishizawa

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

A stretchable, electrochromic film of a uniform composite of poly(3,4-ethylenedioxythiophene):p-toluene sulfonic acid (PEDOT:PTS) and polyurethane (PU) (PEDOT/PU) was fabricated, and its integration with a hydrogel as a free-standing, stretchable electrochromic (EC) display was demonstrated. The PEDOT/PU composite film was prepared by the spin coating of a solution containing an EDOT monomer and PU, followed by oxidative polymerization using iron(III) tosylate at elevated temperature. The fabricated film showed reversible electrochromism without an external conductive support. The color change of the film can be used to quantify the progress of the redox reactions by means of digital camera image analysis and a custom mobile phone app.

Original languageEnglish
Pages (from-to)19513-19518
Number of pages6
JournalACS Applied Materials and Interfaces
Volume9
Issue number23
DOIs
Publication statusPublished - 2017 Jun 14

Keywords

  • conductive polymer
  • digital image analysis
  • electrochromic display
  • intrinsic stretchability
  • wearable device

ASJC Scopus subject areas

  • Materials Science(all)

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