CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, China.
Macromol Rapid Commun. 2021 Jan;42(2):e2000445. doi: 10.1002/marc.202000445. Epub 2020 Nov 16.
A deep eutectic solvent (DES) ionic gel is fabricated rapidly under mild conditions. The acrylic acid monomer is polymerized based on a dual self-catalytic system between Vitamin C (VC) and metal ions, such as Fe in the presence of ammonium persulfate in the DES of betaine and ethylene glycol. The as-obtained PAA/DES ionic gel possesses excellent conductivity between 0.1 and 1.3 S m in a wide range of temperatures from 0 to 90 °C. Moreover, it also shows an ultra-stretchable performance with stretch more than 200 times its original length even under a stretching rate of 100 mm min . Besides, it can operate in harsh conditions because of its anti-freezing and anti-drying properties. The ionic gel is self-healing, and the stretching and conductive performance can be recovered after it is broken. These superior properties of the DES ionic gel provide new insights into the design of novel gels in various applications, such as tissue engineering, sensing, and wearable electronics.
一种深共晶溶剂（DES）离子凝胶在温和条件下快速制备。在 DES 中甜菜碱和乙二醇中，基于 VC 和金属离子（如 Fe）之间的双重自催化体系，使丙烯酸单体聚合，在 DES 中添加过硫酸铵。所得到的 PAA/DES 离子凝胶在 0 至 90°C 的宽温度范围内具有 0.1 至 1.3 S m 之间的优异电导率。此外，它还具有超拉伸性能，在拉伸率为 100 mm min 的情况下，拉伸超过其原始长度的 200 倍。此外，由于其抗冻和抗干燥性能，它可以在恶劣条件下运行。离子凝胶具有自修复性能，在断裂后可以恢复拉伸和导电性能。DES 离子凝胶的这些优越性能为各种应用（如组织工程、传感和可穿戴电子设备）中新型凝胶的设计提供了新的思路。
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