Marigold flower-like assemblies of phosphorescent iridium-silver coordination polymers
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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.
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
Macromolecular Rapid Communications
© 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This work has been made available online in accordance with the publisher’s policies. This is the author created accepted version manuscript following peer review and as such may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1002/marc.201800501
DescriptionEZ-C acknowledges the University of St Andrews and EPSRC (EP/M02105X/1) for financial support.
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