Tan Hui, Sun Lijie, Huang Hongfei, Zhang Luzhi, Neisiany Rasoul Esmaeely, Ma Xiaopeng, You Zhengwei
Center for Child Care and Mental Health (CCCMH), Shenzhen Children's Hospital Affiliated to Shantou University Medical College, Shenzhen, 518038, China.
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Institute of Functional Materials, Research Base of Textile Materials for Flexible Electronics and Biomedical Applications (China Textile Engineering Society), Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative Medicine, Donghua University, Shanghai, 201620, China.
Adv Mater. 2024 Mar;36(13):e2310020. doi: 10.1002/adma.202310020. Epub 2023 Dec 28.
Stretchable conductive fibers play key roles in electronic textiles, which have substantial improvements in terms of flexibility, breathability, and comfort. Compared to most existing electron-conductive fibers, ion-conductive fibers are usually soft, stretchable, and transparent, leading to increasing attention. However, the integration of desirable functions including high transparency, stretchability, conductivity, solvent resistance, self-healing ability, processability, and recyclability remains a challenge to be addressed. Herein, a new molecular strategy based on dynamic covalent cross-linking networks is developed to enable continuous melt spinning of the ionogel fiber with the aforementioned properties. As a proof of concept, adaptable covalently cross-linked ionogel fibers based on dimethylglyoximeurethane (DOU) groups (DOU-IG fiber) are prepared. The resultant DOU-IG fiber exhibited high transparency (>93%), tensile strength (0.76 MPa), stretchability (784%), and solvent resistance. Owing to the dynamic of DOU groups, the DOU-IG fiber shows high healing performance using near-infrared light. Taking advantage of DOU-IG fibers, multifunctional ionotronics with the integration of several desirable functionalities including sensor, triboelectric nanogenerator, and electroluminescent display are fabricated and used for motion monitoring, energy harvesting, and human-machine interaction. It is believed that these DOU-IG fibers are promising for fabricating the next generation of electronic textiles and other wearable electronics.
可拉伸导电纤维在电子纺织品中起着关键作用，电子纺织品在柔韧性、透气性和舒适度方面有了显著提升。与大多数现有的电子导电纤维相比，离子导电纤维通常柔软、可拉伸且透明，因此越来越受到关注。然而，要实现包括高透明度、可拉伸性、导电性、耐溶剂性、自愈能力、可加工性和可回收性等理想功能的集成，仍是一个有待解决的挑战。在此，我们开发了一种基于动态共价交联网络的新分子策略，以实现具有上述性能的离子凝胶纤维的连续熔融纺丝。作为概念验证，制备了基于二甲基乙二肟聚氨酯（DOU）基团的适应性共价交联离子凝胶纤维（DOU-IG纤维）。所得的DOU-IG纤维表现出高透明度（>93%）、拉伸强度（0.76MPa）、可拉伸性（784%）和耐溶剂性。由于DOU基团的动态特性，DOU-IG纤维在近红外光照射下具有很高的自愈性能。利用DOU-IG纤维，制造了集成了传感器、摩擦纳米发电机和电致发光显示器等多种理想功能的多功能离子电子器件，并将其用于运动监测、能量收集和人机交互。相信这些DOU-IG纤维在制造下一代电子纺织品和其他可穿戴电子产品方面具有广阔前景。
