Anti‐freezing, Conductive Self‐healing Organohydrogels with Stable Strain‐Sensitivity at Subzero Temperatures
Abstract
Conductive hydrogels are a class of stretchable conductive materials that are important for various applications. However, water‐based conductive hydrogels inevitably lose elasticity and conductivity at subzero temperatures, which severely limits their applications at low temperatures. Herein we report anti‐freezing conductive organohydrogels by using an H 2 O/ethylene glycol binary solvent as dispersion medium. Owing to the freezing tolerance of the binary solvent, our organohydrogels exhibit stable flexibility and strain‐sensitivity in the temperature range from −55.0 to 44.6 °C. Meanwhile, the solvent molecules could form hydrogen bonds with polyvinyl alcohol (PVA) chains and induce the crystallization of PVA, greatly improving the mechanical strength of the organohydrogels. Furthermore, the non‐covalent crosslinks endow the conductive organohydrogels with intriguing remoldability and self‐healing capability, which are important for practical applications.
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Organohydrogel method can effectively improve mechanical stretchability and multi-stimuli sensitivity of hydrogels.
“this method can effectively improve the mechanical stretchability and multi-stimuli sensitivity of hydrogels”
From Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors. (2023) · cites this paper as [163]
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Multifunctional conductive hydrogel-based flexible wearable sensors
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- Authors
- Rong, Q., Lei, W., Chen, L., Yin, Y., Zhou, J., & Liu, M.
- Affiliations
- Beihang University (CN)
- Corresponding author
- Liu, Mingjie
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2017-10-04
- Volume
- 56
- Issue
- 45
- Pages
- 14159-14163
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2760310206
- Cited by
- 733
- References
- 2
- Citations by year
- 2026: 48 · 2025: 67 · 2024: 89 · 2023: 105 · 2022: 107 · 2021: 122 · 2020: 91 · 2019: 69 · 2018: 35
- FWCI
- 20.54
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Angewandte Chemie International Edition (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China (21574004)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Medicine › Hydrogels: synthesis, properties, applications
- Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
- Physical Sciences › Materials Science › Biomaterials › Supramolecular Self-Assembly in Materials
- Keywords
- conductive hydrogels, organohydrogel, anti-freezing, self-healing, subzero temperatures, strain sensitivity, polyvinyl alcohol, ethylene glycol, hydrogen bonding, non-covalent crosslinking, stretchable conductors, mechanical strength
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