The photoregulation of a mechanochemical polymer scission

Jumpei Kida, Keiichi Imato, Raita Goseki, Daisuke Aoki, Masakazu Morimoto, Hideyuki Otsuka

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Abstract

Control over mechanochemical polymer scission by another external stimulus may offer an avenue to further advance the fields of polymer chemistry, mechanochemistry, and materials science. Herein, we demonstrate that light can regulate the mechanochemical behavior of a diarylethene-conjugated Diels–Alder adduct (DAE/DA) that reversibly isomerizes from a weaker open form to a stronger closed form under photoirradiation. Pulsed ultrasonication experiments, spectroscopic analyses, and density functional theory calculations support the successful photoregulation of the reactivity of this DAE/DA mechanophore, which is incorporated at the mid-chain of a polymer, and indicate that higher force and energy are required to cleave the closed form of the DAE/DA mechanophore relative to the open form. The present photoregulation concept provides an attractive approach toward the generation of new mechanofunctional polymers.

Original languageEnglish
Article number3504
JournalNature Communications
Volume9
Issue number1
DOIs
Publication statusPublished - 2018 Dec 1
Externally publishedYes

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ASJC Scopus subject areas

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

Cite this

Kida, J., Imato, K., Goseki, R., Aoki, D., Morimoto, M., & Otsuka, H. (2018). The photoregulation of a mechanochemical polymer scission. Nature Communications, 9(1), [3504]. https://doi.org/10.1038/s41467-018-05996-7