Amplification of integrated microscopic motions of high-density [2]rotaxanes in mechanically interlocked networks

• DOI: 10.1038/s41467-022-34286-6
• Publication Date: 2022-11-04T17:04:58Z
• Authors: Xue Yang; Lin Cheng; Zhaoming Zhang; Jun Zhao; Ruixue Bai; Zhewen Guo; Wei Yu; Xuzhou Yan
• Keywords: Rotaxane

Abstract Integrating individual microscopic motion to perform tasks in macroscopic sale is common living organisms. However, developing artificial materials which molecular-level motions could be amplified behave macroscopically still challenging. Herein, we present a class of mechanically interlocked networks (MINs) carrying densely rotaxanated backbones as model system understand mechanical properties stemmed from the integration and amplification intramolecular embedded [2]rotaxane motifs. On one hand, bonds introduces original dangling chains into network, synergy numerous such leads an expansion entire imparting good stretchability puncture resistance MINs. other dissociation host−guest recognition subsequent sliding represent peculiar energy dissipation pathway, whose result bulk with favorable toughness damping capacity. Thereinto, develop continuous stress-relaxation method elucidate units, contributes understanding relationship between cumulative performance.