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Integrating charge mobility, stability and stretchability within conjugated polymer films for stretchable multifunctional sensors

Author

Listed:
  • Sung Yun Son

    (University of North Carolina at Chapel Hill
    Kwangwoon University)

  • Giwon Lee

    (North Carolina State University
    North Carolina State University)

  • Hongyu Wang

    (North Carolina State University)

  • Stephanie Samson

    (University of North Carolina at Chapel Hill)

  • Qingshan Wei

    (North Carolina State University)

  • Yong Zhu

    (North Carolina State University)

  • Wei You

    (University of North Carolina at Chapel Hill)

Abstract

Conjugated polymers (CPs) are promising semiconductors for intrinsically stretchable electronic devices. Ideally, such CPs should exhibit high charge mobility, excellent stability, and high stretchability. However, converging all these desirable properties in CPs has not been achieved via molecular design and/or device engineering. This work details the design, synthesis and characterization of a random polythiophene (RP-T50) containing ~50 mol% of thiophene units with a thermocleavable tertiary ester side chain and ~50 mol% of unsubstituted thiophene units, which, upon thermocleavage of alkyl chains, shows significant improvement of charge mobility and stability. Thermal annealing a RP-T50 film coated on a stretchable polydimethylsiloxane substrate spontaneously generates wrinkling in the polymer film, which effectively enhances the stretchability of the polymer film. The wrinkled RP-T50-based stretchable sensors can effectively detect humidity, ethanol, temperature and light even under 50% uniaxial and 30% biaxial strains. Our discoveries offer new design rationale of strategically applying CPs to intrinsically stretchable electronic systems.

Suggested Citation

  • Sung Yun Son & Giwon Lee & Hongyu Wang & Stephanie Samson & Qingshan Wei & Yong Zhu & Wei You, 2022. "Integrating charge mobility, stability and stretchability within conjugated polymer films for stretchable multifunctional sensors," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30361-0
    DOI: 10.1038/s41467-022-30361-0
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    1. Ying Diao & Yan Zhou & Tadanori Kurosawa & Leo Shaw & Cheng Wang & Steve Park & Yikun Guo & Julia A. Reinspach & Kevin Gu & Xiaodan Gu & Benjamin C. K. Tee & Changhyun Pang & Hongping Yan & Dahui Zhao, 2015. "Flow-enhanced solution printing of all-polymer solar cells," Nature Communications, Nature, vol. 6(1), pages 1-10, November.
    2. Ned Bowden & Scott Brittain & Anthony G. Evans & John W. Hutchinson & George M. Whitesides, 1998. "Spontaneous formation of ordered structures in thin films of metals supported on an elastomeric polymer," Nature, Nature, vol. 393(6681), pages 146-149, May.
    3. Renxuan Xie & Albree R. Weisen & Youngmin Lee & Melissa A. Aplan & Abigail M. Fenton & Ashley E. Masucci & Fabian Kempe & Michael Sommer & Christian W. Pester & Ralph H. Colby & Enrique D. Gomez, 2020. "Glass transition temperature from the chemical structure of conjugated polymers," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
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    Cited by:

    1. Shuzhen Yan & Kaiming Hu & Shuai Chen & Tiantian Li & Wenming Zhang & Jie Yin & Xuesong Jiang, 2022. "Photo-induced stress relaxation in reconfigurable disulfide-crosslinked supramolecular films visualized by dynamic wrinkling," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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