The photo- and electroluminescence properties of a series of novel, heteroleptic, mer-cyclometallated iridium complexes have been fine-tuned from green to blue by changing the substituents on the pyridyl ring of the phenylpyridyl ligand. The X-ray crystal structures of two Ir-based triazolyl complexes are reported.
Mak, C. S. K., Hayer, A., Pascu, S. I., Watkins, S. E., Holmes, A. B., Kohler, A., & Friend, R. H. (2005). Blue-to-green electrophosphorescence of iridium-based cyclometallated materials. Chemical Communications, 2005(37), 4708-4710. https://doi.org/10.1039/b508695g