Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 23, Pages 19513-19518Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b03124
Keywords
electrochromic display; intrinsic stretchability; conductive polymer; digital image analysis; wearable device
Funding
- Center of Innovation Program (COI-Stream)
- Creation of Innovation Centers for Advanced Interdisciplinary Research Area Program from Japan Science and Technology Agency (JST)
- Regional Innovation Strategy Support Program Knowledge-based Medical Device Cluster/Miyagi Area
- Ministry of Education, Culture, Sports, Science and Technology, Japan [K15K13315, 25246016]
- Grants-in-Aid for Scientific Research [25246016] Funding Source: KAKEN
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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 spill 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.
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