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Self-Integratable, Healable and Stretchable Electroluminescent Device Fabricated via Dynamic Urea Bonds Equipped in Polyurethane.

07:00 EST 13th February 2020 | BioPortfolio

Summary of "Self-Integratable, Healable and Stretchable Electroluminescent Device Fabricated via Dynamic Urea Bonds Equipped in Polyurethane."

Reversible bonding between polymer chains has been used primarily to induce self-healing of damaged polymers. Inspired by the dynamic nature of such bonding, we have developed a polyurethane equipped with dynamic urea bonds (PEDUB) that has high strength sufficient to make it free-standing, healing capability and self-bonding property. This allowed subsequent heterogeneous multi-component device integration of electrodes/substrate and light-emitting pixels into a light-emitting device. We first used the PEDUB to individually fabricate a highly stretchable electrode containing Ag nanowires and stretchable composites with ZnS-based particles. They were successfully assembled into a stretchable, waterproof electroluminescent (EL) device even under mild condition (60 °C for 10 min) owing to the reversible exchange of urea bonds and low glass transition temperature of PEDUB. The assembled device with an AC-driven EL architecture retained excellent EL characteristics even after stretching, submersion in water, and cutting owing to the robust solid-state bonding interfaces induced by the dynamic urea bonds. Consequently, various shapes of the illuminating elastomer and an illuminated picture were realized for the first time using the mosaic-like assembly method. This first demonstration of multi-component assembly paves the way for future stretchable multi-functional devices.

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This article was published in the following journal.

Name: ACS applied materials & interfaces
ISSN: 1944-8252
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