Shaping crystals with light: Crystal-to-crystal isomerization and photomechanical effect in fluorinated azobenzenes

Oleksandr S. Bushuyev, Anna Tomberg, Tomislav Friščić*, Christopher J. Barrett

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Unusually long thermal half-lives of perhalogenated cis-azobenzenes enabled their structural characterization and the first evidence of a crystal-to-crystal cis → trans azobenzene isomerization. Irradiation with visible light transforms a perhalogenated cis-azobenzene single crystal into a polycrystalline aggregate of its trans-isomer in a photomechanical transformation that involves a significant, controllable, and thermally irreversible change of crystal shape. This is the first demonstration of permanent photomechanical modification of crystal shape in an azobenzene.

Original languageEnglish
Pages (from-to)12556-12559
Number of pages4
JournalJournal of the American Chemical Society
Volume135
Issue number34
DOIs
Publication statusPublished - 28 Aug 2013

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry

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