Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 62, Issue 2, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202213749
Keywords
Electroluminescent Elastomers; Flexible Electronics; Organic Emitters; Organic Light-Emitting Diodes (OLEDs); Stretchable Electronics
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In this study, the stretchability of elastomers was significantly improved through the self-confinement effect, and high-performance non-blended stretchable OLEDs were successfully constructed. The results provide an effective molecular design strategy for highly deformable stretchable displays and flexible electronics.
Ultra-flexible stretchable organic light-emitting diodes (OLEDs) are emerging as a basic component of flexible electronics and human-machine interfaces. However, the brightness and efficiency of stretchable OLEDs remain still far inferior to their rigid counterparts, owing to the scarcity of satisfactory stretchable electroluminescent materials. Herein, we explore a general concept based on the self-confinement effect to dramatically improve the stretchability of elastomers, without affecting electroluminescent properties. The balanced rigid/flexible chain dynamics under self-confinement significantly reduces the modulus of the elastomers, resulting in the maximum strain reaching 806 %. Ultra-flexible stretchable OLEDs have been constructed based on the resulting ISEEs, achieving unprecedented high-performance non-blended stretchable OLEDs. The results suggest an effective molecular design strategy for highly deformable stretchable displays and flexible electronics.
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