Citation: Yi Zhang, Yong Chen, Qian Wang, Jian-Qiu Li, Song-En Liu, Yu Liu. Slide ring polymer in situ cross-linked conductive ionogel for self-powered sensor[J]. Chinese Chemical Letters, ;2026, 37(2): 111676. doi: 10.1016/j.cclet.2025.111676 shu

Slide ring polymer in situ cross-linked conductive ionogel for self-powered sensor

Yi Zhang ^{a, b} ,
Yong Chen ^a ,
Qian Wang ^b ,
Jian-Qiu Li ^a ,
Song-En Liu ^a ,
Yu Liu ^{a, *,}

a.
College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry Nankai University, Tianjin 300071, China
b.
Tianjin Key Laboratory of Food Biotechnology, College of Biotechnology and Food Science, Department of Applied Chemistry, Tianjin University of Commerce, Tianjin 300134, China

yuliu@nankai.edu.cn

Received Date: 29 March 2025
Revised Date: 23 July 2025
Accepted Date: 6 August 2025
Available Online: 7 August 2025

Figures(5)

Possessing excellent mechanical properties, a high-coverage slide-ring conductive gel is constructed by in situ polymerization of α-cyclodextrin (α-CD) polyrotaxane (PR) and 1-vinyl-3-ethylimidazolium bromide ([VEIM]Br) ionic liquid (IL), using 1-ethyl-3-methylimidazolium bromide ([EMIM]Br) IL as solvent. Benefiting from the compatibility of ILs and alkene-PR, the cross-linked network slide-ring gel not only maintains excellent conductivity (1.52 × 10⁻² S/m), but also has effectively improved mechanical properties (513% fracture strain, 0.713 MPa fracture stress, 211 kPa elastic modulus and 1366 kJ/m³ toughness) and adhesive properties (472.3 ± 25.9 kPa). The supramolecular gel can be used as a strain sensor to efficiently monitor deformation signals in real-time at least 200 times. Especially, the slide-ring gel can self-power generated by triboelectric effect and electrostatic induction between the skin layer and the polydimethylsiloxane (PDMS) layer that encapsulates the gel, achieving reversible and durable motion sensing, which provides a convenient pathway for constructing supramolecular self-powered flexible electronic materials.
- Supramolecular gel,
- Polyrotaxane,
- Cyclodextrin,
- Self-powered sensor
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