Topology-transformable block copolymers based on a rotaxane structure: change in bulk properties with same composition

Hiroki Sato, Daisuke Aoki, Hironori Marubayashi, Satoshi Uchida, Hiromitsu Sogawa, Shuichi Nojima, Xiaobin Liang, Ken Nakajima, Teruaki Hayakawa, Toshikazu Takata

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


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.

Original languageEnglish
Article number6175
JournalNature communications
Issue number1
Publication statusPublished - 2021 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)


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