Solution-processable, soft, self-adhesive, and conductive polymer composites for soft electronics

Peng Tan, Haifei Wang, Furui Xiao, Xi Lu, Wenhui Shang, Xiaobo Deng, Huafeng Song, Ziyao Xu, Junfeng Cao, Tiansheng Gan, Ben Wang and Xuechang Zhou ()
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Peng Tan: Shenzhen University
Haifei Wang: Shenzhen University
Furui Xiao: Shenzhen University
Xi Lu: Shenzhen University
Wenhui Shang: Shenzhen University
Xiaobo Deng: Shenzhen University
Huafeng Song: Shenzhen University
Ziyao Xu: Shenzhen University
Junfeng Cao: Shenzhen University
Tiansheng Gan: Shenzhen University
Ben Wang: Shenzhen University
Xuechang Zhou: Shenzhen University

Nature Communications, 2022, vol. 13, issue 1, 1-12

Abstract: Abstract Soft electronics are rising electronic technologies towards applications spanning from healthcare monitoring to medical implants. However, poor adhesion strength and significant mechanical mismatches inevitably cause the interface failure of devices. Herein we report a self-adhesive conductive polymer that possesses low modulus (56.1-401.9 kPa), high stretchability (700%), high interfacial adhesion (lap-shear strength >1.2 MPa), and high conductivity (1-37 S/cm). The self-adhesive conductive polymer is fabricated by doping the poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) composite with a supramolecular solvent (β-cyclodextrin and citric acid). We demonstrated the solution process-based fabrication of self-adhesive conductive polymer-based electrodes for various soft devices, including alternating current electroluminescent devices, electromyography monitoring, and an integrated system for the visualization of electromyography signals during muscle training with an array of alternating current electroluminescent devices. The self-adhesive conductive polymer-based electronics show promising features to further develop wearable and comfortable bioelectronic devices with the physiological electric signals of the human body readable and displayable during daily activities.

Date: 2022
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DOI: 10.1038/s41467-022-28027-y

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