Marigold flower-like assemblies of phosphorescent iridium-silver coordination polymers
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.
Citation
Rota Martir , D , Rajamalli , P , Cordes , D B , Slawin , A M Z & Zysman-Colman , E 2018 , ' Marigold flower-like assemblies of phosphorescent iridium-silver coordination polymers ' , Macromolecular Rapid Communications , vol. Early View , 1800501 . https://doi.org/10.1002/marc.201800501
Publication
Macromolecular Rapid Communications
Status
Peer reviewed
ISSN
1022-1336Type
Journal article
Description
EZ-C acknowledges the University of St Andrews and EPSRC (EP/M02105X/1) for financial support.Collections
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