Citation: Gongxi Li, Jun Jin, Junxuan Tu, Haoguo Yue, Ying Wang, Xiaohui Jia, Weiyuan Yin, Zhenglin Han, Yuxuan Deng, Chunfeng Shi, Yonggang Zhen. Intrinsically stretchable polymer semiconductors synergistically constructed by hydrogen bonds and metal coordination[J]. Chinese Chemical Letters, ;2025, 36(12): 111716. doi: 10.1016/j.cclet.2025.111716 shu

Intrinsically stretchable polymer semiconductors synergistically constructed by hydrogen bonds and metal coordination

Gongxi Li ^{a, d, 1} ,
Jun Jin ^{a, 1} ,
Junxuan Tu ^a ,
Haoguo Yue ^a ,
Ying Wang ^a ,
Xiaohui Jia ^{b, *,} ,
Weiyuan Yin ^a ,
Zhenglin Han ^a ,
Yuxuan Deng ^a ,
Chunfeng Shi ^{c, *,} ,
Yonggang Zhen ^{a, d, *,}

a.
State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
b.
National Demonstration Center for Experimental Life Sciences & Biotechnology Education, Beijing Normal University, Beijing 100875, China
c.
State Key Laboratory of Catalytic Materials and Reaction Engineering, Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China
d.
State Key laboratory of Fine chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China

xhjia@bnu.edu.cn

shicf.ripp@sinopec.com

zhenyg@buct.edu.cn

Received Date: 15 April 2025
Revised Date: 12 August 2025
Accepted Date: 12 August 2025
Available Online: 13 August 2025

Figures(4)

Intrinsically stretchable semiconducting polymers play a vital role in the development of wearable electronics, featuring low-cost, large-area and high-density fabrication. Only single-stage dynamic chemical bond has been widely incorporated into polymer backbones to afford stretchability while multiple dynamic bonds have not been investigated, making a formidable challenge to achieve high stretchability without compromising charge transport properties. Herein, we synthesize a series of stretchable polymer semiconductors incorporating urethane and bipyridine units, which can provide dynamic interconnected polymer network by combination of hydrogen bonds with metal coordination, simultaneously obtaining excellent stretchability and carrier mobilities. Compared with single-stage hydrogen bonds, multiple dynamic chemical bonds constructed by 10% hydrogen bonds and 0.25 equiv. metal coordination endowed the polymer semiconductors with an 58% enhancement in carrier mobility and a two-fold increase in crack-onset strain. Notably, the polymer exhibited stable carrier mobilities parallel to the stretching direction, with 91% of initial values even under 150% strain, which is the unprecedented value for intrinsically stretchable semiconducting polymers without blending of elastomers. Therefore, the introduction of multiple dynamic bonds provides an effective and promising approach for intrinsically stretchable and high-performance polymer semiconductor.
- Hydrogen bonds,
- Metal coordination,
- Semiconducting polymer,
- Stretchability,
- Organic thin film transistor
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