Predicting Fatigue Damage in Hydrogels Through Force-Induced Luminescence Enhancement
Qi Ma1, Jiaofeng Xiong1, Yawen Zhou1, Shilong Zhang1, Jiayu Wang1, Weizheng Li1（李维政）*, Xiuyang Zou2（邹修洋）*, Feng Yan1,3（严锋）*
1Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Suzhou Key Laboratory of Soft Material and New Energy College of Chemistry Chemical Engineering and Materials Science Soochow University Suzhou 215123, China
2Jiangsu Engineering Research Center for Environmental Functional Materials School of Chemistry and Chemical Engineering Huaiyin Normal University Huaian 223300, China
3State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University Shanghai 201620, China
Adv. Mater. 2024, 36, 2413874
Abstract: Fatigue damage of polymers occurs under long-term load cycling, resulting in irreversible fracture failure, which is difficult to predict. The real-time monitoring of material fatigue damage is of great significance. Here, tough hydrogels are prepared with force-induced confined luminescence enhancement of carbonated polymer quantum dot (CPD) clusters to realize the visualization of fracture process and the monitoring of fatigue damage. The enhanced interactions induced by force between the clusters and the polymer in the confined space inhibit the non-radiative leaps and promote the radiative leaps to quantify the fatigue damage into optical signals. Rigid CPDs with abundant active sites on the surface can form dynamic reversible bonds with polymer and dissipate stress concentration, which significantly enhances the crack propagation strain (8000%) and fracture energy (26.4 kJ m−2) of hydrogels. CPD hydrogels have a wide range of applications in novel information encryption and luminescent robotics.
Article information: //doi.org/10.1002/adma.202413874
