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Volume 6
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10.3390/reactions6040062
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Novel Design of [c2]Daisy-Chain Rotaxane Crosslinkers Bearing Long-Chain Alkenes and Development of Tough Topological Polymer

by
Yuuki Kawashima
,
Moe Koda
,
Kenjiro Onimura
and
Kazuhiro Yamabuki
*
Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
*
Author to whom correspondence should be addressed.
Reactions 2025, 6(4), 62; https://doi.org/10.3390/reactions6040062 (registering DOI)
Submission received: 11 October 2025 / Revised: 7 November 2025 / Accepted: 13 November 2025 / Published: 15 November 2025
Versions Notes

Abstract

To explore new possibilities in topological materials, we designed a tetrafunctional crosslinker composed of a [c2]daisy-chain rotaxane framework. In this study, a novel topological network polymer was successfully synthesized via an addition reaction between 3,6-dioxa-1,8-octanedithiol (DODT) and a tetrafunctional crosslinker, a [c2]daisy-chain rotaxane constructed from dibenzo-24-crown-8 ether (DB24C8) units and bearing long-chain alkenes on its four benzene rings. The resulting network polymer exhibited both high stiffness and toughness, along with excellent shape-memory properties. These characteristics were governed by a balance between plastic and elastic deformation originating from the DODT and rotaxane domains, respectively, highlighting a new design strategy for the creation of advanced topological materials.
Keywords: [c2]daisy-chain rotaxane crosslinker; tough topological polymer; thiol–ene reaction; shape memory material [c2]daisy-chain rotaxane crosslinker; tough topological polymer; thiol–ene reaction; shape memory material

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MDPI and ACS Style

Kawashima, Y.; Koda, M.; Onimura, K.; Yamabuki, K. Novel Design of [c2]Daisy-Chain Rotaxane Crosslinkers Bearing Long-Chain Alkenes and Development of Tough Topological Polymer. Reactions 2025, 6, 62. https://doi.org/10.3390/reactions6040062

AMA Style

Kawashima Y, Koda M, Onimura K, Yamabuki K. Novel Design of [c2]Daisy-Chain Rotaxane Crosslinkers Bearing Long-Chain Alkenes and Development of Tough Topological Polymer. Reactions. 2025; 6(4):62. https://doi.org/10.3390/reactions6040062

Chicago/Turabian Style

Kawashima, Yuuki, Moe Koda, Kenjiro Onimura, and Kazuhiro Yamabuki. 2025. "Novel Design of [c2]Daisy-Chain Rotaxane Crosslinkers Bearing Long-Chain Alkenes and Development of Tough Topological Polymer" Reactions 6, no. 4: 62. https://doi.org/10.3390/reactions6040062

APA Style

Kawashima, Y., Koda, M., Onimura, K., & Yamabuki, K. (2025). Novel Design of [c2]Daisy-Chain Rotaxane Crosslinkers Bearing Long-Chain Alkenes and Development of Tough Topological Polymer. Reactions, 6(4), 62. https://doi.org/10.3390/reactions6040062

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