A single-crystal-to-single-crystal transformation affording photochromic


  • Yang Xue
  • Giorgi Michel
  • Karoui Hakim
  • Gigmes Didier
  • Hornebecq Virginie
  • Ouari Olivier
  • Kermagoret Anthony
  • Bardelang David

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Metal-organic framework (MOF) type crystals in which rigid, viologen-based pillars are surrounded by cucurbit[7]uril (CB[7]) macrocycles are described. These metal-organic rotaxane frameworks (MORF) are obtained by desolvation of a crystal precursor featuring a network already near-optimal toward 3D metal-ligand reticulation and show reversible photochromism.

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