Mechanically interlocked mechanophores by living-radical polymerization from rotaxane initiators

Ragnar S. Stoll, Douglas C. Friedman, J. Fraser Stoddart

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

Two [2]rotaxane initiators for single-electron-transfer living-radical-polymerization were synthesized and used for the controlled polymerization of methyl acrylate. The mechanically interlocked polymers exhibited distinct responses to mechanical activation by ultrasound. Monitoring the fate of the rotaxanes? charge transfer absorption bands provides evidence for preferential mechanical degradation of a midsection rotaxane unit as compared to a terminal rotaxane entity as a consequence of mechanical forces accumulating in the central region of the polymer chain.

Original languageEnglish (US)
Pages (from-to)2706-2709
Number of pages4
JournalOrganic Letters
Volume13
Issue number10
DOIs
StatePublished - May 20 2011

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry

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