title: The synthesis and photophysics of tris-heteroleptic cyclometalated iridium complexes.
abstract: Herein we report the synthesis and photophysical study of tris-heteroleptic complexes of the general formula IrLL'(acac), where L and L' are two differently substituted 2-phenylpyridines (ppyH) and acacH is 2,4-pentanedione, using a combinatorial approach that could be employed for many ligand combinations. The tris-heteroleptic complexes and the analogous bis-heteroleptic complexes of the form IrL(2)(acac) have been studied by a combination of absorption and photoluminescence spectroscopies in conjunction with modelling by DFT and TD-DFT to elucidate the nature and location of the excited state in the novel species.
authors: Department of Chemistry, Durham University, UK.
authors: Robert M
authors: RM
authors: Edkins
authors: Alisdair
authors: A
authors: Wriglesworth
authors: Katharina
authors: K
authors: Fucke
authors: Sylvia L
authors: SL
authors: Bettington
authors: Andrew
authors: A
authors: Beeby
mesh_terms: D018360:Crystallography, X-Ray; D007495:Iridium / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D010422:Pentanones / Q000737:chemistry*; D055668:Photochemical Processes; D011725:Pyridines / Q000737:chemistry*; D011789:Quantum Theory; D013237:Stereoisomerism
chemical_list: D009942:Organometallic Compounds; D010422:Pentanones; D011725:Pyridines; C058324:2-phenylpyridine; D007495:Iridium; C008790:acetylacetone