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- Title
Topology-transformable block copolymers based on a rotaxane structure: change in bulk properties with same composition.
- Authors
Sato, Hiroki; Aoki, Daisuke; Marubayashi, Hironori; Uchida, Satoshi; Sogawa, Hiromitsu; Nojima, Shuichi; Liang, Xiaobin; Nakajima, Ken; Hayakawa, Teruaki; Takata, Toshikazu
- Abstract
The topology of polymers affects their characteristic features, i.e., their microscopic structure and macroscopic properties. However, the topology of a polymer is usually fixed during the construction of the polymer chain and cannot be transformed after its determination during the synthesis. In this study, topology-transformable block copolymers that are connected via rotaxane linkages are introduced. We will present systems in which the topology transformation of block copolymers changes their 1) microphase-separated structures and 2) macroscopic mechanical properties. The combination of a rotaxane structure at the junction point and block copolymers that spontaneously form microphase-separated structures in the bulk provides access to systems that cannot be attained using conventional covalent bonds. The topology of a polymer is normally a fixed property of the material, derived from the characteristic of the monomers and their linkages. Here the authors present a method to transform the topology of block copolymers containing rotaxane linkages via acetylation.
- Subjects
BLOCK copolymers; COVALENT bonds; DIBLOCK copolymers; MONOMERS; POLYMERS; TOPOLOGY; ACETYLATION
- Publication
Nature Communications, 2021, Vol 12, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-021-26249-0