文献类型：期刊文献

英文题名：Constructing Tunable Hierarchical Nanosheets and Their Application in Polymer Reinforcement

作者：Wang, Yueyao[1];Zhang, Yuxiang[1];Jia, Shiqing[1];Feng, Chun[1];Tao, Xinfeng[1];Xu, Binbin[1];Lin, Shaoliang[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai, Peoples R China

年份：2026

外文期刊名：ADVANCED MATERIALS

收录：;EI(收录号：20261220299046);WOS:【SCI-EXPANDED(收录号:WOS:001717046000001)】；

基金：National Science Foundation for Distinguished Young Scholars (52325308), National Natural Science Foundation of China (52273008 and 52473005), Shanghai Rising-Star Program (23QA1402500).

语种：英文

外文关键词：biomimetic structures; hierarchical self-assembly; liquid crystals; nanosheets; polymer reinforcement

摘要：Nanosheet materials are tremendously attractive for their specific planar architecture and large surface area. However, fabricating nanosheet structures with morphological and functional control across spatial domains from the 2D to 3D scale remains a great challenge. Herein, we report a facile one-pot strategy for creating nanosheets with tunable geometries and multilevel hierarchies based on a liquid crystalline (LC) block copolymer. By finely tuning the assembly conditions, a variety of nanosheet morphologies were achieved, including multilayer leaf-like nanosheets (MLNs), multilayer rectangular nanosheets (MRNs), 3D stacked leaf-like nanosheets (SLNs), 3D stacked rectangular nanosheets (SRNs), and stacked flower-like nanosheets (SFNs). The formation of diverse nanosheet structures relies on LC ordering and the nucleation and growth tendencies of the copolymer. Particularly, we demonstrate that these hierarchical nanosheets are promising additives for polymer reinforcement. By mimicking biological reinforcing principles, SLNs integrating a large surface area with layered and anisotropic characteristics exhibit efficient toughening and strengthening effects through effective energy dissipation and crack deflection. This study not only offers a facile strategy for the design of nanosheet materials with precise control of their morphologies and dimensions but also provides new insight into using hierarchical nanosheet structures to achieve advanced polymer performance.