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Onoda M, Ueki T, Shibayama M, et al. Multiblock copolymers exhibiting spatio-temporal structure with autonomous viscosity oscillation. Sci Rep. 2015;5:15792doi: 10.1038/srep15792.
Onoda, M., Ueki, T., Shibayama, M., & Yoshida, R. (2015). Multiblock copolymers exhibiting spatio-temporal structure with autonomous viscosity oscillation. Scientific reports, 515792. https://doi.org/10.1038/srep15792
Onoda, Michika, et al. "Multiblock copolymers exhibiting spatio-temporal structure with autonomous viscosity oscillation." Scientific reports vol. 5 (2015): 15792. doi: https://doi.org/10.1038/srep15792
Onoda M, Ueki T, Shibayama M, Yoshida R. Multiblock copolymers exhibiting spatio-temporal structure with autonomous viscosity oscillation. Sci Rep. 2015 Oct 29;5:15792. doi: 10.1038/srep15792. PMID: 26511660; PMCID: PMC4625142.
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Sci Rep. 2015 Oct 29;5:15792. doi: 10.1038/srep15792.

Multiblock copolymers exhibiting spatio-temporal structure with autonomous viscosity oscillation.

Scientific reports

Michika Onoda, Takeshi Ueki, Mitsuhiro Shibayama, Ryo Yoshida

Affiliations

  1. Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
  2. Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwano-ha, Kashiwa, Chiba 277-8581, Japan.

PMID: 26511660 PMCID: PMC4625142 DOI: 10.1038/srep15792

Abstract

Here we report an ABA triblock copolymer that can express microscopic autonomous formation and break-up of aggregates under constant condition to generate macroscopic viscoelastic self-oscillation of the solution. The ABA triblock copolymer is designed to have hydrophilic B segment and self-oscillating A segment at the both sides by RAFT copolymerization. In the A segment, a metal catalyst of chemical oscillatory reaction, i.e., the Belousov-Zhabotinsky (BZ) reaction, is introduced as a chemomechanical transducer to change the aggregation state of the polymer depending on the redox states. Time-resolved DLS measurements of the ABA triblock copolymer confirm the presence of a transitional network structure of micelle aggregations in the reduced state and a unimer structure in the oxidized state. This autonomous oscillation of a well-designed triblock copolymer enables dynamic biomimetic softmaterials with spatio-temporal structure.

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