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Orientational control of polymeric semiconductors (PSs) is a fundamental technology for understanding and improving the carrier transport properties. Although PS thin films have been fabricated through facile solution processes, complex convection flows during solvent evaporation often limit the scalability and reproducibility of orientational control. To address these problems, we developed a circular flow alignment method for PS thin films. PS solutions were dropped on glycerol flowing in a circular motion inside a container to obtain thin films at the air− liquid interface. The resulting thin films showed alignment of the main chains along the flow direction, which suppressed the effects of convection flows during solvent evaporation.

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  This document is the unedited Author’s version of a Submitted Work that was subsequently accepted for publication in ACS Applied Materials & Interfaces, copyright © 2025 American Chemical Society after peer review. To access the final edited and published work see https://doi.org/10.1021/acsami.4c20510.

Keyword: organic semiconductor, polymer alignment, field-effect transistor

Date published: 2025-02-26

Publisher: American Chemical Society (ACS)

Journal:

• ACS Applied Materials & Interfaces (ISSN: 19448244) vol. 17 issue. 8 p. 12488-12494

Funding:

• Japan Society for the Promotion of Science JP20H00392
• Japan Society for the Promotion of Science JP23K23428
• Fusion Oriented REsearch for disruptive Science and Technology JPMJFR236R

Manuscript type: Author's version (Submitted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5461

First published URL: https://doi.org/10.1021/acsami.4c20510

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Updated at: 2025-05-07 12:30:07 +0900

Published on MDR: 2025-05-07 12:19:25 +0900