Stretchable Redox-active Semiconducting Polymers for High-performance Organic Electrochemical Transistors
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Type
ArticleAuthors
Dai, YahaoDai, Shilei
Li, Nan
Li, Yang
Moser, Maximilian
Strzalka, Joseph
Prominski, Aleksander
Liu, Youdi
Zhang, Qingteng
Li, Songsong
Hu, Huawei
Liu, Wei
Chatterji, Shivani
Cheng, Ping
Tian, Bozhi
McCulloch, Iain

Xu, Jie
Wang, Sihong

KAUST Department
Chemical Science ProgramKAUST Solar Center (KSC)
KAUST Solar Center (KSC) King Abdullah University of Science and Technology (KAUST) Thuwal 23955–6900 Saudi Arabia
Physical Science and Engineering (PSE) Division
Date
2022-04-21Embargo End Date
2023-04-21Permanent link to this record
http://hdl.handle.net/10754/676452
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Show full item recordAbstract
Organic electrochemical transistor (OECT) is an emerging device platform for next-generation bioelectronics owing to its uniquely high amplification and sensitivity to biological signals. For achieving seamless tissue-electronics interfaces for accurate signal acquisition, skin-like softness and stretchability are essential requirements, which have not yet been imparted onto high-performance OECTs, largely due to the lack of stretchable redox-active semiconducting polymers. Here, we report a stretchable semiconductor for OECT devices, namely poly(2-(3,3'-bis(2-(2-(2-methoxyethoxy)ethoxy)ethoxy)-[2,2'-bithiophen]-5)yl thiophene) (p(g2T-T)), which gives exceptional stretchability over 200% strain and 5000 repeated stretching cycles, together with the OECT performance on par with the state of the art. Validated by the systematic characterizations and the comparisons of different polymers, the key design features of this polymer that enable the combination of high stretchability and high OECT performance are non-linear backbone architecture, moderate side-chain density, and sufficiently high molecular weight. Using this highly stretchable polymer semiconductor, we fabricated an intrinsically stretchable OECT with the high normalized transconductance (∼223 S cm-1 ) and biaxial stretchability up to 100% strain. Furthermore, we demonstrate on-skin electrocardiogram (ECG) recording that combines built-in amplification and unprecedented skin conformability.Citation
Dai, Y., Dai, S., Li, N., Li, Y., Moser, M., Strzalka, J., Prominski, A., Liu, Y., Zhang, Q., Li, S., Hu, H., Liu, W., Chatterji, S., Cheng, P., Tian, B., McCulloch, I., Xu, J., & Wang, S. (2022). Stretchable Redox-active Semiconducting Polymers for High-performance Organic Electrochemical Transistors. Advanced Materials, 2201178. Portico. https://doi.org/10.1002/adma.202201178Sponsors
Supported by the US Office of Naval Research (N00014-21-1-2266) and a start-up fund from the University of Chicago. J.X. acknowledges the Center for Nanoscale Materials, a US Department of Energy Office of Science User Facility and supported by the US Department of Energy Office of Science, under contract DE-AC02-06CH11357. This research used resources of the Advanced Photon Source, a US Department of Energy Office of Science User Facility, operated for the Department of Energy Office of Science by Argonne National Laboratory under contract DE-AC02-06CH11357.All the experiments involving human subjects have been approved by the University of Chicago Biological Sciences Division/University of Chicago Medical Center Institutional Review Boards, with the assigned study/project number of IRB20-1412; and written informed consent was obtained from all participantsPublisher
WileyJournal
Advanced MaterialsPubMed ID
35448913Additional Links
https://onlinelibrary.wiley.com/doi/10.1002/adma.202201178ae974a485f413a2113503eed53cd6c53
10.1002/adma.202201178
Scopus Count
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