Mechanophore activation at heterointerfaces

Jun Li, Tomohiro Shiraki, Bin Hu, Roger A.E. Wright, Bin Zhao, Jeffrey S. Moore

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Silica nanoparticles grafted with poly(methyl acrylate) (PMA) chains anchored by a maleimide-anthracene cycloadduct were synthesized to demonstrate mechanochemically selective activation of mechanophores at heterogeneous interfaces. By quantifying the anthracene-containing cleaved PMA polymers, which are generated via retro-[4 + 2] cycloaddition reactions, the first-order kinetic coefficient was determined. Activation characteristics of mechanophores anchored to a nanoparticle exhibit behavior similar to mechanophore-linked polymers, e.g., threshold molecular weight and linear increase in rate coefficient with molecular weight above the threshold. This model system is thus valuable as a probe to test stress activation of interfacially bonded mechanophores relevant to the design of fiber-reinforced polymer composites.

Original languageEnglish
Pages (from-to)15925-15928
Number of pages4
JournalJournal of the American Chemical Society
Volume136
Issue number45
DOIs
Publication statusPublished - Nov 12 2014

Fingerprint

Nanoparticles
Polymers
Anthracene
Molecular Weight
Chemical activation
Cycloaddition Reaction
Molecular weight
Exercise Test
Silicon Dioxide
Cycloaddition
Silica
Kinetics
Fibers
Composite materials
anthracene
maleimide
poly(MPC-co-MA)
methyl acrylate

All Science Journal Classification (ASJC) codes

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

Cite this

Li, J., Shiraki, T., Hu, B., Wright, R. A. E., Zhao, B., & Moore, J. S. (2014). Mechanophore activation at heterointerfaces. Journal of the American Chemical Society, 136(45), 15925-15928. https://doi.org/10.1021/ja509949d

Mechanophore activation at heterointerfaces. / Li, Jun; Shiraki, Tomohiro; Hu, Bin; Wright, Roger A.E.; Zhao, Bin; Moore, Jeffrey S.

In: Journal of the American Chemical Society, Vol. 136, No. 45, 12.11.2014, p. 15925-15928.

Research output: Contribution to journalArticle

Li, J, Shiraki, T, Hu, B, Wright, RAE, Zhao, B & Moore, JS 2014, 'Mechanophore activation at heterointerfaces', Journal of the American Chemical Society, vol. 136, no. 45, pp. 15925-15928. https://doi.org/10.1021/ja509949d
Li, Jun ; Shiraki, Tomohiro ; Hu, Bin ; Wright, Roger A.E. ; Zhao, Bin ; Moore, Jeffrey S. / Mechanophore activation at heterointerfaces. In: Journal of the American Chemical Society. 2014 ; Vol. 136, No. 45. pp. 15925-15928.
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