Network reorganization of dynamic covalent polymer gels with exchangeable diarylbibenzofuranone at ambient temperature

Keiichi Imato, Tomoyuki Ohishi, Masamichi Nishihara, Atsushi Takahara, Hideyuki Otsuka

研究成果: ジャーナルへの寄稿記事

44 引用 (Scopus)

抄録

Reversible bonds and interactions have been utilized to build stimuli-responsive and reorganizable polymer networks that show recyclability, plasticity, and self-healing. In addition, reorganization of polymer gels at ambient temperature, such as room or body temperature, is expected to lead to several biomedical applications. Although these stimuli-responsive properties originate from the reorganization of the polymer networks, not such microscopic structural changes but instead only macroscopic properties have been the focus of previous work. In the present work, the reorganization of gel networks with diarylbibenzofuranone (DABBF)-based dynamic covalent linkages in response to the ambient temperature was systematically investigated from the perspective of both macroscopic and microscopic changes. The gels continued to swell in suitable solvents above room temperature but attained equilibrium swelling in nonsolvents or below room temperature because of the equilibrium of DABBF linkages, as supported by electron paramagnetic resonance measurements. Small-angle X-ray scattering measurements revealed the mesh sizes of the gels to be expanded and the network structures reorganized under control at ambient temperature.

元の言語英語
ページ(範囲)11839-11845
ページ数7
ジャーナルJournal of the American Chemical Society
136
発行部数33
DOI
出版物ステータス出版済み - 8 20 2014

Fingerprint

Polymers
Gels
Temperature
Electron Spin Resonance Spectroscopy
Body Temperature
X ray scattering
Plasticity
Paramagnetic resonance
Swelling
X-Rays

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

これを引用

Network reorganization of dynamic covalent polymer gels with exchangeable diarylbibenzofuranone at ambient temperature. / Imato, Keiichi; Ohishi, Tomoyuki; Nishihara, Masamichi; Takahara, Atsushi; Otsuka, Hideyuki.

:: Journal of the American Chemical Society, 巻 136, 番号 33, 20.08.2014, p. 11839-11845.

研究成果: ジャーナルへの寄稿記事

@article{556a7657613d499ba574ba953c4aac3c,
title = "Network reorganization of dynamic covalent polymer gels with exchangeable diarylbibenzofuranone at ambient temperature",
abstract = "Reversible bonds and interactions have been utilized to build stimuli-responsive and reorganizable polymer networks that show recyclability, plasticity, and self-healing. In addition, reorganization of polymer gels at ambient temperature, such as room or body temperature, is expected to lead to several biomedical applications. Although these stimuli-responsive properties originate from the reorganization of the polymer networks, not such microscopic structural changes but instead only macroscopic properties have been the focus of previous work. In the present work, the reorganization of gel networks with diarylbibenzofuranone (DABBF)-based dynamic covalent linkages in response to the ambient temperature was systematically investigated from the perspective of both macroscopic and microscopic changes. The gels continued to swell in suitable solvents above room temperature but attained equilibrium swelling in nonsolvents or below room temperature because of the equilibrium of DABBF linkages, as supported by electron paramagnetic resonance measurements. Small-angle X-ray scattering measurements revealed the mesh sizes of the gels to be expanded and the network structures reorganized under control at ambient temperature.",
author = "Keiichi Imato and Tomoyuki Ohishi and Masamichi Nishihara and Atsushi Takahara and Hideyuki Otsuka",
year = "2014",
month = "8",
day = "20",
doi = "10.1021/ja5065075",
language = "English",
volume = "136",
pages = "11839--11845",
journal = "Journal of the American Chemical Society",
issn = "0002-7863",
publisher = "American Chemical Society",
number = "33",

}

TY - JOUR

T1 - Network reorganization of dynamic covalent polymer gels with exchangeable diarylbibenzofuranone at ambient temperature

AU - Imato, Keiichi

AU - Ohishi, Tomoyuki

AU - Nishihara, Masamichi

AU - Takahara, Atsushi

AU - Otsuka, Hideyuki

PY - 2014/8/20

Y1 - 2014/8/20

N2 - Reversible bonds and interactions have been utilized to build stimuli-responsive and reorganizable polymer networks that show recyclability, plasticity, and self-healing. In addition, reorganization of polymer gels at ambient temperature, such as room or body temperature, is expected to lead to several biomedical applications. Although these stimuli-responsive properties originate from the reorganization of the polymer networks, not such microscopic structural changes but instead only macroscopic properties have been the focus of previous work. In the present work, the reorganization of gel networks with diarylbibenzofuranone (DABBF)-based dynamic covalent linkages in response to the ambient temperature was systematically investigated from the perspective of both macroscopic and microscopic changes. The gels continued to swell in suitable solvents above room temperature but attained equilibrium swelling in nonsolvents or below room temperature because of the equilibrium of DABBF linkages, as supported by electron paramagnetic resonance measurements. Small-angle X-ray scattering measurements revealed the mesh sizes of the gels to be expanded and the network structures reorganized under control at ambient temperature.

AB - Reversible bonds and interactions have been utilized to build stimuli-responsive and reorganizable polymer networks that show recyclability, plasticity, and self-healing. In addition, reorganization of polymer gels at ambient temperature, such as room or body temperature, is expected to lead to several biomedical applications. Although these stimuli-responsive properties originate from the reorganization of the polymer networks, not such microscopic structural changes but instead only macroscopic properties have been the focus of previous work. In the present work, the reorganization of gel networks with diarylbibenzofuranone (DABBF)-based dynamic covalent linkages in response to the ambient temperature was systematically investigated from the perspective of both macroscopic and microscopic changes. The gels continued to swell in suitable solvents above room temperature but attained equilibrium swelling in nonsolvents or below room temperature because of the equilibrium of DABBF linkages, as supported by electron paramagnetic resonance measurements. Small-angle X-ray scattering measurements revealed the mesh sizes of the gels to be expanded and the network structures reorganized under control at ambient temperature.

UR - http://www.scopus.com/inward/record.url?scp=84906347102&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84906347102&partnerID=8YFLogxK

U2 - 10.1021/ja5065075

DO - 10.1021/ja5065075

M3 - Article

AN - SCOPUS:84906347102

VL - 136

SP - 11839

EP - 11845

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

SN - 0002-7863

IS - 33

ER -