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Keywords:

  • conjugated donor–acceptor copolymer;
  • single polymer fibers;
  • organic electronics;
  • field-effect transistors;
  • self-assembly
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Ultrahigh-mobility organic field-effect transistors (OFETs) based on a CDT-BTZ donor-acceptor copolymer are realized by reaching high molecular order and pronounced alignment in single fibers within a short OFET channel via solution processing. The macromolecules directionally self-assemble in a quasi crystal-like order in the fibers providing in this way an unhindered charge carrier pathway with mobilities as high as 5.5 cm2 V−1 s−1.