Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 14, Issue 51, Pages 57281-57289Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c18631
Keywords
metallosupramolecular elastomer; metal-ligand; counterions; self-healing; photothermal effect
Funding
- National Natural Science Foundation of China [51873110]
- Sichuan Science and Technology Program [2021JDJQ0018]
- State Key Laboratory of Polymer Materials Engineering
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This study synthesized a simple acrylate copolymer model and introduced copper salts with different counterions to construct dynamic copper-nitrogen coordination cross-linked networks, generating elastomers with excellent performance. The research found that counterions have effects on various properties of the materials, providing guidance for the preparation and performance tailoring of metallosupramolecular elastomers.
Metallosupramolecular elastomers have attracted much attention due to their excellent mechanical properties, flexible tailoring of performance, and responsiveness to photo and thermal stimuli. The physicomechanical properties of metallosupramolecular elastomers are highly dependent on metal salts and ligand units; however, the role of counterions lacks practical exploration. To this end, we synthesized a simple acrylate copolymer model and introduced copper salts with different counterions to construct dynamic copper-nitrogen coordination cross-linked networks. This approach generated a series of elastomers with a tensile strength of over 10 MPa and a laser self-healing efficiency of over 90% within 2 min. In particular, we studied the effects of counterions on the thermodynamic, viscoelastic, mechanical, photothermal, and self-healing properties of the materials. Therefore, this work can provide instruction for the preparation and performance tailoring of metallosupramolecular elastomers.
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