CC BY 4.0 UnportedDitte, KristinaPerez, JonathanChae, SoosangHambsch, MikeAl-Hussein, MahmoudKomber, HartmutFormanek, PeterMannsfeld, Stefan C.B.Fery, AndreasKiriy, AntonLissel, Franziska2021-08-312021-08-312020https://oa.tib.eu/renate/handle/123456789/6635https://doi.org/10.34657/5682Polymer 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. © 2020 The Authors. Advanced Materials published by Wiley-VCH GmbHenghttps://creativecommons.org/licenses/by/4.0/540660block copolymersorganic field-effect transistorsskin-compatible electronicsArticle