The crystal structure of bis{3,5-difluoro-2-[4-(2,4,6-trimethylphenyl)pyridin-2-yl]phenyl}(picolinato)iridium(III) and its 4-tert-butylpyridin-2-yl analogue

Abstract

The crystal structures of two blue-emitting iridium(III) cyclo­metallates were determined and related to the photophysical properties of the complexes.

Unusual dual-emissive heteroleptic iridium complexes incorporating TADF cyclometalating ligands

“…11 An iridium complex containing a dibenzoylmethane ancillary ligand has been reported to exhibit different emission spectra from two distinct polymorphs, related to the difference in π-stacking interactions in the solid state. 12 Iridium complexes have also been incorporated into polymer chains containing other emissive materials of different colours. 13,14 Some iridium complexes with relatively simple structures that display dual emission include a neutral mer-homoleptic complex studied by Yeh et al, which displayed two main emission features in solution, assigned to an ILCT/MLCT state and a localised ligand to ligand charge transfer (LLCT)/MLCT state, whose relative intensities varied with temperature.…”