Xiao Wenqing, Zhang Ping, Wei Hongqiu, Yu You
Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an China, 710000.
ACS Macro Lett. 2020 Nov 17;9(11):1681-1686. doi: 10.1021/acsmacrolett.0c00621. Epub 2020 Nov 3.
Hydrogel tubes as one kind of perfusable tubular materials, show promising applications in a wide spectrum of fields. However, there is still a great challenge to design a rapid, biocompatible, and straightforward strategy for one-step engineering tough hydrogel tubes, which have excellent mechanical properties, unique resilience, and multiple functions. Herein, we explore visible-light-mediated orthogonal photochemistry to achieve the fabrication of tough hydrogel tubes with double networks via a coaxial-nozzle spinning technique under short blue-light irradiation (∼20 s). The as-prepared tubes are tough (2.3 MJ m) and have mechanical strength (∼300 kPa) with a critical strain of 16, good fatigue resistance, and resilience (>95% within 3 min). These perfusable tubular hydrogels not only can be knitted and assembled to complicated 2D/3D structures, but also are designed to fabricate functional tubes in one step with the applications in fields of smart materials, soft electronics, and sensors.
水凝胶管作为一种可灌注的管状材料，在广泛的领域中显示出有前景的应用。然而，设计一种快速、生物相容且直接的策略来一步法制造具有优异机械性能、独特弹性和多种功能的坚韧水凝胶管仍然面临巨大挑战。在此，我们探索可见光介导的正交光化学，以通过短蓝光照射（约20秒）下的同轴喷嘴纺丝技术实现具有双网络的坚韧水凝胶管的制造。所制备的管子坚韧（2.3 MJ m），具有机械强度（约300 kPa），临界应变为16，具有良好的抗疲劳性和弹性（3分钟内>95%）。这些可灌注的管状水凝胶不仅可以编织和组装成复杂的二维/三维结构，还被设计用于一步法制造功能管，应用于智能材料、软电子和传感器等领域。
