Zhang Zhi, Li Peiyun, Xiong Miao, Zhang Liang, Chen Jupeng, Lei Xun, Pan Xiran, Wang Xiu, Deng Xin-Yu, Shen Weiyu, Mei Zi, Liu Kai-Kai, Liu Guangchao, Huang Zhen, Lv Shixian, Shao Yuanlong, Lei Ting
Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, School of Materials Science and Engineering, Peking University, Beijing 100871, China.
College of Energy Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou 215006, China.
Sci Adv. 2024 Apr 5;10(14):eadk0647. doi: 10.1126/sciadv.adk0647. Epub 2024 Apr 3.
Conjugated polymers have demonstrated promising optoelectronic properties, but their brittleness and poor mechanical characteristics have hindered their fabrication into durable fibers and textiles. Here, we report a universal approach to continuously producing highly strong, ultratough conjugated polymer fibers using a flow-enhanced crystallization (FLEX) method. These fibers exhibit one order of magnitude higher tensile strength (>200 megapascals) and toughness (>80 megajoules per cubic meter) than traditional semiconducting polymer fibers and films, outperforming many synthetic fibers, ready for scalable production. These fibers also exhibit unique strain-enhanced electronic properties and exceptional performance when used as stretchable conductors, thermoelectrics, transistors, and sensors. This work not only highlights the influence of fluid mechanical effects on the crystallization and mechanical properties of conjugated polymers but also opens up exciting possibilities for integrating these functional fibers into wearable electronics.
共轭聚合物已展现出有前景的光电特性，但其脆性和较差的机械性能阻碍了它们被制成耐用的纤维和纺织品。在此，我们报道一种通用方法，即使用流动增强结晶（FLEX）法连续生产高强度、超韧性的共轭聚合物纤维。这些纤维的拉伸强度（>200兆帕斯卡）和韧性（>80兆焦耳每立方米）比传统半导体聚合物纤维和薄膜高一个数量级，性能优于许多合成纤维，且易于规模化生产。这些纤维在用作可拉伸导体、热电材料、晶体管和传感器时，还展现出独特的应变增强电子特性和卓越性能。这项工作不仅突出了流体力学效应对共轭聚合物结晶和机械性能的影响，还为将这些功能纤维集成到可穿戴电子产品中开辟了令人兴奋的可能性。
