Chaninya Mak-Iad, Luca Bertossi, Georges J M Formon, Christoph Weder
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Metallosupramolecular polymers (MSPs), formed through ligand-metal coordination, feature dynamic bonds that enable damage repair via reversible dissociation. Here, we report the synthesis of healable MSPs by modifying commercially available glycol-modified polyethylene terephthalate (PETG), an amorphous commodity polyester known for its durability, chemical resistance, and formability. The new materials were accessed through the Zn-catalyzed transesterification of PETG with ethylene glycol, end-functionalization of the resulting homobifunctional oligomers with the 2,6-bis(1'-methylbenzimidazolyl)pyridine (Mebip) ligand, and subsequent assembly of these macromonomers into MSPs via Zn2+ complexation. One of the MSPs made offers an attractive combination of high tensile strength (31 MPa), high Young's Modulus (1 GPa), and excellent healability (94% in 2.5 min).
期刊介绍：
ACS Macro Letters publishes research in all areas of contemporary soft matter science in which macromolecules play a key role, including nanotechnology, self-assembly, supramolecular chemistry, biomaterials, energy generation and storage, and renewable/sustainable materials. Submissions to ACS Macro Letters should justify clearly the rapid disclosure of the key elements of the study. The scope of the journal includes high-impact research of broad interest in all areas of polymer science and engineering, including cross-disciplinary research that interfaces with polymer science.
With the launch of ACS Macro Letters, all Communications that were formerly published in Macromolecules and Biomacromolecules will be published as Letters in ACS Macro Letters.
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