News - Armatures Radical Metal-Organic Rotaxane

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

Xue Yang, Michel Giorgi, Hakim Karoui, Didier Gigmes, Virginie Hornebecq, Olivier Ouari, Anthony Kermagoret, David Bardelang,
Chemical Communications, 55 13824-13827 (2019) 

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.