期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 29, 页码 16224-16229出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202105620
关键词
host-guest chemistry; mechanical adaptivity; mechanically interlocked molecules; mechanically interlocked polymers; mortise-and-tenon joint
资金
- NSFC/China [21901161, 22071152]
- Natural Science Foundation of Shanghai [20ZR1429200]
- Shanghai Jiao Tong University Scientific and Technological Innovation Funds
The study introduces a mechanically interlocked network (MIN) inspired by mortise-and-tenon joints, which successfully mimics the structure and function of the joint at a molecular level. This novel material exhibits both mechanical adaptivity and structural stability, with decent stiffness, strength, toughness, and deformation recovery capacity.
Mortise-and-tenon joints have been widely used for thousands of years in wooden architectures in virtue of their artistic and functional performance. However, imitation of similar structural and mechanical design philosophy to construct mechanically adaptive materials at the molecular level is a challenge. Herein, we report a mortise-and-tenon joint inspired mechanically interlocked network (MIN), in which the [2]rotaxane crosslink not only mimics the joint in structure, but also reproduces its function in modifying mechanical properties of the MIN. Benefiting from the hierarchical energy dissipative ability along with the controllable intramolecular movement of the mechanically interlocked crosslink, the resultant MIN simultaneously exhibits notable mechanical adaptivity and structural stability in a single system, as manifested by decent stiffness, strength, toughness, and deformation recovery capacity.
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