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Intrinsically stretchable fully π-conjugated polymer film via fluid conjugated molecular external-plasticizing for flexible light-emitting diodes

Author

Listed:
  • Zhiqiang Zhuo

    (Nanjing Tech University (NanjingTech))

  • Mingjian Ni

    (Xiamen University)

  • Ningning Yu

    (Nanjing Tech University (NanjingTech))

  • Yingying Zheng

    (Nanjing Tech University (NanjingTech))

  • Yingru Lin

    (Nanjing Tech University (NanjingTech))

  • Jing Yang

    (Nanjing Tech University (NanjingTech))

  • Lili Sun

    (Sun Yat-sen University)

  • Lizhi Wang

    (Nanjing Tech University (NanjingTech))

  • Lubing Bai

    (Nanjing Tech University (NanjingTech))

  • Wenyu Chen

    (Nanjing Tech University (NanjingTech))

  • Man Xu

    (Nanjing University of Posts & Telecommunications)

  • Fengwei Huo

    (Nanjing Tech University (NanjingTech))

  • Jinyi Lin

    (Nanjing Tech University (NanjingTech))

  • Quanyou Feng

    (Nanjing University of Posts & Telecommunications)

  • Wei Huang

    (Nanjing Tech University (NanjingTech)
    Xiamen University
    Sun Yat-sen University
    Nanjing University of Posts & Telecommunications)

Abstract

Fully π-conjugated polymers with rigid aromatic units are promising for flexible optoelectronic devices, but their inherent brittleness poses a challenge for achieving high-performance, intrinsically stretchable fully π-conjugated polymer. Here, we are establishing an external-plasticizing strategy using semiconductor fluid plasticizers (Z1 and Z2) to enhance the optoelectronic, morphological, and stretchable properties of fully π-conjugated polymer films for flexible light-emitting diodes. The synergistic effect of hierarchical structure and optoelectronic properties of Z1 in poly(9,9-di-n-octylfluorene-alt-benzothiadiazole) (F8BT) films enable excellent stretchable deformability (~25%) and good conductivity. PLEDs based on F8BT/Z1 films show stable electroluminescence and efficiency under 15% stretch and 100 cycles at 10% strain, revealing outstanding stress tolerance. This strategy is also improving the stretchable properties of polymers like poly(9,9-di-n-octylfluorenyl-2,7-diyl) (PFO) and poly(2-methoxy-5(2′-ethyl)hexoxy-phenylenevinylene) (Super Yellow), demonstrating its general applicability. Therefore, this strategy can provide effective guidance for designing high-performance stretchable fully π-conjugated polymers films for flexible electronic devices.

Suggested Citation

  • Zhiqiang Zhuo & Mingjian Ni & Ningning Yu & Yingying Zheng & Yingru Lin & Jing Yang & Lili Sun & Lizhi Wang & Lubing Bai & Wenyu Chen & Man Xu & Fengwei Huo & Jinyi Lin & Quanyou Feng & Wei Huang, 2024. "Intrinsically stretchable fully π-conjugated polymer film via fluid conjugated molecular external-plasticizing for flexible light-emitting diodes," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50358-1
    DOI: 10.1038/s41467-024-50358-1
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