Stress Dissipation Encoded Silk Fibroin Electrode for the Athlete-Beneficial Silk Bioelectronics

Woojin Choi, Deokjae Heo, Taeho Kim, Sungwon Jung, Moonhyun Choi, Jiwoong Heo, Jae Sung Kwon, Byeong Su Kim, Wonhwa Lee, Won Gun Koh, Jeong Ho Cho, Sangmin Lee, Jinkee Hong

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The kinetic body motions have guided the core-shell fabrics of wearable bioelectronics to be elastoplastic. However, the polymeric electrodes follow the trade-off relationship between toughness and stretchability. To this end, the stress dissipation encoded silk fibroin electrode is proposed as the core electrode of wearable bioelectronics. Significantly, the high degree of intrinsic stress dissipation is realized via an amino acid crosslink. The canonical phenolic amino acid (i.e., tyrosine) of silk fibroin is engineered to bridge the secondary structures. A sufficient crosslink network is constructed when tyrosine is exposed near the amorphous strand. The stress dissipative tyrosine crosslink affords 12.5-fold increments of toughness (4.72 to 58.9 MJ m−3) and implements the elastoplastic silk fibroin. The harmony of elastoplastic core electrodes with shell fabrics enables the wearable bioelectronics to employ mechanical performance (elastoplasticity of 750 MJ m−3) and stable electrical response. The proposed wearable is capable of assisting the effective workouts via triboelectricity. In principle, active mobility with suggested wearables potentially relieves muscular fatigues and severe injuries during daily fitness.

Original languageEnglish
Article number2105420
JournalAdvanced Science
Volume9
Issue number8
DOIs
Publication statusPublished - 2022 Mar 15

Bibliographical note

Funding Information:
W.C. and D.H. contributed equally to this work. Prof. J.H. acknowledges funding from the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (NRF‐2017R1E1A1A01074343), Korea Environment Industry & Technology Institute (KEITI) through Ecological Imitation‐based Environmental Pollution Management Technology Development Project, funded by Korea Ministry of Environment (MOE) (2019002790001), and Korea Medical Device Development Fund grant funded by the Korea government (the Ministry of Science and ICT, the Ministry of Trade, Industry and Energy, the Ministry of Health & Welfare, Republic of Korea, the Ministry of Food and Drug Safety) (Project Number: 202011D04). Prof. S.L. acknowledges funding from National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (2021R1A4A3030268). The authors appreciate H. Jung to offer the fitness center (AFRO FITNESS).

Publisher Copyright:
© 2022 The Authors. Advanced Science published by Wiley-VCH GmbH

All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Chemical Engineering(all)
  • Materials Science(all)
  • Biochemistry, Genetics and Molecular Biology (miscellaneous)
  • Engineering(all)
  • Physics and Astronomy(all)

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