Self‐Healing Supramolecular Materials Constructed by Copolymerization via Molecular Recognition of Cavitand‐Based Coordination Capsules

Autor:	Natsumi Nitta, Shin-ichi Kihara, Takehiro Hirao, Takeharu Haino, Mei Takatsuka
Rok vydání:	2020
Předmět:	chemistry.chemical_classification Hydrodynamic radius Materials science Supramolecular chemistry Cavitand macromolecular substances General Chemistry Polymer General Medicine Catalysis chemistry.chemical_compound Molecular recognition chemistry Graft polymer Polymer chemistry Copolymer Side chain
Zdroj:	Angewandte Chemie. 132:16833-16840
ISSN:	1521-3757 0044-8249
Popis:	The repeating guest units of poly-(R)-2 were selectively encapsulated by the self-assembled capsule poly-1 possessing eight polymer side chains to form the supramolecular graft polymer (poly-1)n ⋅poly-(R)-2. The encapsulation of the guest units was confirmed by 1 H NMR spectroscopy and the DOSY technique. The hydrodynamic radius of the graft polymer structure was greatly increased upon the complexation of poly-1. The supramolecular graft polymer (poly-1)n ⋅poly-(R)-2 was stably formed in the 1:1 host-guest ratio, which increased the glass transition temperature by more than 10 °C compared to that of poly-1. AFM visualized that (poly-1)n ⋅poly-(R)-2 formed the networked structure on mica. The (poly-1)n ⋅poly-(R)-2 gelled in 1,1,2,2-tetrachloroethane, which led to fabrication of distinct viscoelastic materials that demonstrated self-healing behavior in a tensile test.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d8a8f19afb07a1cbc3f78bec35adc61 https://doi.org/10.1002/ange.202006604 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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