Marigold flower-like assemblies of phosphorescent iridium-silver coordination polymers

Diego Rota Martir, Pachaiyappan Rajamalli, David B. Cordes, Alexandra M. Z. Slawin, Eli Zysman-Colman

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Racemic and enantiopure phosphorescent iridium(III)-silver(I) coordination polymers are reported. The polymers rac-, Δ- and ΔΔΔΔ-IrAg were formed, respectively, by the assembly of the chiral iridium metalloligands rac-, Δ- and Δ-[Ir(mesppy)2(qpy)]PF6 (rac-, Δ- and Δ-Ir) where mesppy is 2-phenyl-4-mesitylpyridinato and qpy is 4,4':2',2'':4'',4'''- quaterpyridine, and Ag+ ions through Npy-Ag linear coordination. The polymers have been characterized in MeNO2 solution by 1H and 1H DOSY NMR and CD spectroscopies and in the solid-state by Scanning Electron Microscopy (SEM); the crystal structures of the racemic polymer rac- IrAg has been obtained by X-ray diffraction. The polymers rac-, Δ- and Δ-IrAg exhibited orange/red emission in solution, in films and as crystals, with intensities comparable to those of the corresponding iridium metalloligands rac-, Δ- and Δ-Ir. The morphology of the enantiopure polymers in the solid-state resemble marigold flower-like nano-porous assemblies while the racemic polymer possesses an irregular morphology formation.
Original languageEnglish
Article number1800501
JournalMacromolecular Rapid Communications
VolumeEarly View
Early online date21 Aug 2018
DOIs
Publication statusE-pub ahead of print - 21 Aug 2018

Keywords

  • Iridium
  • Metalloligands
  • Metallopolymers
  • Phosphorescence
  • Silver

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