When Dynamic Diselenide Bonds Meet Dynamic Imine Bonds in Polymeric Materials

Area of Science:

• Polymer Chemistry
• Materials Science
• Supramolecular Chemistry

Background:

• Cooperation between dynamic interactions is crucial for complex functions in natural and artificial systems.
• Dynamic covalent bonds (DCBs) are stable dynamic interactions with known synergistic effects in natural systems like proteins.
• The synergistic interactions of multiple DCBs in polymeric materials remain largely unexplored.

Purpose of the Study:

• To investigate the synergistic effect between diselenide and imine bonds in polymeric materials.
• To quantitatively evaluate the impact of these synergistic interactions on typical dynamic material processes.

Main Methods:

• Preparation of polymeric materials incorporating both diselenide and imine bonds.
• Quantitative evaluation of synergistic effects during degradation and stress relaxation processes.
• Analysis of dynamic properties influenced by multiple DCBs.

Main Results:

• A weak synergistic effect was observed between diselenide and imine bonds during the degradation process.
• A strong synergistic effect was found between these dynamic covalent bonds in the stress relaxation process.
• The presence of multiple DCBs significantly enhanced the overall dynamic properties of the polymers.

Conclusions:

• Multiple dynamic covalent bonds can be effectively introduced into polymeric materials.
• The combination of diselenide and imine bonds demonstrates significant synergistic effects, especially in stress relaxation.
• Incorporating multiple DCBs offers a promising strategy to extensively enhance the dynamic properties of advanced polymeric materials.