Authors
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Ditte, K. ; Perez, J. ; Chae, S. ; Hambsch, M. ; Al-Hussein, M. ; Komber, H. ; Formanek, P. ; Mannsfeld, S. ; Fery, A. ; Kiriy, A. ; Lissel, F.
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Title
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Ultrasoft and high-mobility block copolymers for skin-compatible electronics
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Date
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04.01.2021
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Number
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59061
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Abstract
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Polymer semiconductors (PSCs) are an essential component of organic field–effect transistors (OFETs), but their potential for stretchable electronics is limited by their brittleness and failure susceptibility upon strain. Herein, a covalent connection of two state–of–the–art polymers—semiconducting poly–diketo–pyrrolopyrrole–thienothiophene (PDPP–TT) and elastomeric poly(dimethylsiloxane) (PDMS)—in a single triblock copolymer (TBC) chain is reported, which enables high charge carrier mobility and low modulus in one system. Three TBCs containing up to 65 wt% PDMS were obtained, and the TBC with 65 wt% PDMS content exhibits mobilities up to 0.1 cm2 V-1 s-1, in the range of the fully conjugated reference polymer PDPP–TT (0.7 cm2 V-1 s-1). The TBC is ultrasoft with a low elastic modulus (5 MPa) in the range of mammalian tissue. The TBC exhibits an excellent stretchability and extraordinary durability, fully maintaining the initial electric conductivity in a doped state after 1500 cycles to 50% strain.
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Publisher
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Advanced Materials
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Wikidata
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Citation
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Advanced Materials 33 (2021) 2005416
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DOI
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https://doi.org/10.1002/ADMA.202005416
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Tags
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