Stretchable Redox-Active Semiconducting Polymers for High-Performance Organic Electrochemical Transistors

Détails bibliographiques
Publié dans:	Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 23 vom: 03. Juni, Seite e2201178
Auteur principal:	Dai, Yahao (Auteur)
Autres auteurs:	Dai, 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
Format:	Article en ligne
Langue:	English
Publié:	2022
Accès à la collection:	Advanced materials (Deerfield Beach, Fla.)
Sujets:	Journal Article organic electrochemical transistors redox-active polymer semiconductors stretchable electronics Polymers

Description
Résumé:	© 2022 The Authors. Advanced Materials published by Wiley-VCH GmbH. Organic electrochemical transistors (OECTs) represent an emerging device platform for next-generation bioelectronics owing to the 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, but they have not yet been imparted onto high-performance OECTs, largely due to the lack of stretchable redox-active semiconducting polymers. Here, a stretchable semiconductor is reported 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 OECT performance on par with the state-of-the-art. Validated by systematic characterizations and comparisons of different polymers, the key design features of this polymer that enable the combination of high stretchability and high OECT performance are a nonlinear backbone architecture, a moderate side-chain density, and a sufficiently high molecular weight. Using this highly stretchable polymer semiconductor, an intrinsically stretchable OECT is fabricated with high normalized transconductance (≈223 S cm-1 ) and biaxial stretchability up to 100% strain. Furthermore, on-skin electrocardiogram (ECG) recording is demonstrated, which combines built-in amplification and unprecedented skin conformability
Description:	Date Completed 10.06.2022 Date Revised 10.06.2022 published: Print-Electronic Citation Status MEDLINE
ISSN:	1521-4095
DOI:	10.1002/adma.202201178