Enhancing the Toughness and Strength of Polymers Using Mechanically Interlocked Hydrogen Bonds

• DOI: 10.1021/jacs.3c12404
• Publication Date: 2023-12-23T14:53:41Z
• Authors: Liya Chen; Wei You; Jiao Wang; Xue Yang; Ding Xiao; Huangtianzhi Zhu; Yifei Zhang; Guangfeng Li; Wei Yu; Jonathan L. Sessler; Feihe Huang
• Keywords: Catenane

The energy dissipative features of hydrogen bonds under conditions mechanical strain have provided an ongoing incentive to explore bonding units for the purpose controlling and customizing properties polymeric materials. However, there remains a need bond that (1) possess directionality, (2) provide selectivity, (3) dissipate effectively, (4) can be incorporated readily into materials regulate their properties. Here, we report mechanically interlocked incorporate multiple within [2]catenane structure. conformational flexibility associated spatial folding characteristics allow molecular scale motion external stress, while structure serves as pivot maintains directionality selectivity resultant units. When polymers, these motifs serve strengthen toughen resulting This study not only presents novel unit creating with improved but also underscores unique opportunities structures may across diverse range applications.