Multi-colour uranyl emission efficiently tuned by hexacyanidometallates within hybrid coordination frameworks

Abstract

Unique hybrid organic–inorganic coordination networks, three-dimensional [(UO₂)₂(OH)(4,4′-bpdo)₂][M(CN)₆]·nH₂O (M = Co, 1; Rh, 2; Ir, 3) and layered [(UO₂)₂(OH)₂(4,4′-bpdo)₂][Pt(CN)₆]·H₂O (4), employing cyanide, hydroxide and 4,4′-bpdo bridges, are reported. They exhibit vibronically coupled charge transfer emission of uranyl ions, whose colour is tunable from green to orange by the implemented hexacyanidometallates.