Wu Yufang, Zhang Xiong-Fei, Li Mengjie, Yu Mengjiao, Yao Jianfeng
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
Langmuir. 2024 Mar 12;40(10):5288-5296. doi: 10.1021/acs.langmuir.3c03718. Epub 2024 Feb 28.
A kind of ionic conductive gel (also named eutectogel) is developed from an inorganic salt (ZnCl)-based deep eutectic solvent (DES). The ternary DES consists of ZnCl, acrylic acid, and water, and cotton linter cellulose is introduced into the DES system to tailor its mechanical and conductive properties. Enabled by the extensive hydrogen bonds and ion-dipole interactions, the obtained eutectogel displays superior ionic conductivity (0.33 S/m), high stretchability (up to 2050%), large tensile strength (1.82 MPa), and wide temperature tolerance (-40 to 60 °C). In particular, the water-induced coordination interactions can tune the strength of hydrogen/ionic bonds in the eutectogels, imparting them with appealing humidity sensing ability in complex and extreme conditions.
一种离子导电凝胶（也称为低共熔凝胶）由基于无机盐（ZnCl）的低共熔溶剂（DES）制备而成。三元DES由ZnCl、丙烯酸和水组成，将棉短绒纤维素引入DES体系以调整其机械性能和导电性能。由于存在广泛的氢键和离子 - 偶极相互作用，所得的低共熔凝胶具有优异的离子电导率（0.33 S/m）、高拉伸性（高达2050%）、大拉伸强度（1.82 MPa）以及宽温度耐受性（-40至60°C）。特别地，水诱导的配位相互作用可以调节低共熔凝胶中氢键/离子键的强度，使其在复杂和极端条件下具有良好的湿度传感能力。
