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Title: Quadruple H-bonding cross-linked supramolecular polymeric materials as substrates for stretchable, antitearing, and self-healable thin film electrodes
Authors: Yan, Xuzhou
Liu, Zhiyuan
Zhang, Qiuhong
Lopez, Jeffrey
Wang, Hui
Wu, Hung-Chin
Niu, Simiao
Yan, Hongping
Wang, Sihong
Lei, Ting
Li, Junheng
Qi, Dianpeng
Huang, Pingao
Huang, Jianping
Zhang, Yu
Wang, Yuanyuan
Li, Guanglin
Tok, Jeffery B.-H.
Chen, Xiaodong
Bao, Zhenan
Keywords: Engineering::Materials
Issue Date: 2018
Source: Yan, X., Liu, Z., Zhang, Q., Lopez, J., Wang, H., Wu, H.-C., . . . Bao, Z. (2018). Quadruple H-bonding cross-linked supramolecular polymeric materials as substrates for stretchable, antitearing, and self-healable thin film electrodes. Journal of the American Chemical Society, 140(15), 5280-5289. doi:10.1021/jacs.8b01682
Journal: Journal of the American Chemical Society 
Abstract: Herein, we report a de novo chemical design of supramolecular polymer materials (SPMs-1–3) by condensation polymerization, consisting of (i) soft polymeric chains (polytetramethylene glycol and tetraethylene glycol) and (ii) strong and reversible quadruple H-bonding cross-linkers (from 0 to 30 mol %). The former contributes to the formation of the soft domain of the SPMs, and the latter furnishes the SPMs with desirable mechanical properties, thereby producing soft, stretchable, yet tough elastomers. The resulting SPM-2 was observed to be highly stretchable (up to 17 000% strain), tough (fracture energy ∼30 000 J/m2), and self-healing, which are highly desirable properties and are superior to previously reported elastomers and tough hydrogels. Furthermore, a gold, thin film electrode deposited on this SPM substrate retains its conductivity and combines high stretchability (∼400%), fracture/notch insensitivity, self-healing, and good interfacial adhesion with the gold film. Again, these properties are all highly complementary to commonly used polydimethylsiloxane-based thin film metal electrodes. Last, we proceed to demonstrate the practical utility of our fabricated electrode via both in vivo and in vitro measurements of electromyography signals. This fundamental understanding obtained from the investigation of these SPMs will facilitate the progress of intelligent soft materials and flexible electronics.
ISSN: 0002-7863
DOI: 10.1021/jacs.8b01682
Schools: School of Materials Science & Engineering 
Organisations: Innovative Center for Flexible Devices 
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of the American Chemical Society, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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