石墨烯
材料科学
轮烷
韧性
纳米技术
极限抗拉强度
复合材料
超分子化学
分子
化学
有机化学
作者
Yan Wang,Boyue Gao,Fuyi Fang,Wen-Hao Qi,Ge Yan,Jun Zhao,Wenbin Wang,Ruixue Bai,Zhaoming Zhang,Zhitao Zhang,Wenming Zhang,Xuzhou Yan
标识
DOI:10.1002/anie.202404481
摘要
The pursuit of fabricating high-performance graphene films has aroused considerable attention due to their potential for practical applications. However, developing both stretchable and tough graphene films remains a formidable challenge. To address this issue, we herein introduce mechanical bond to comprehensively improve the mechanical properties of graphene films, utilizing [2]rotaxane as the bridging unit. Under external force, the [2]rotaxane cross-link undergoes intramolecular motion, releasing hidden chain and increasing the interlayer slip distance between graphene nanosheets. Compared with graphene films without [2]rotaxane cross-linking, the presence of mechanical bond not only boosted the strength of graphene films (247.3 vs 74.8 MPa) but also markedly promoted the tensile strain (23.6 vs 10.2 %) and toughness (23.9 vs 4.0 MJ/m
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