Abstract
Photophysical properties of meridional ( mer) and facial ( fac) isomers of eight iridium(III) trischelete complexes composed of combination of two ligands, 2-( p-tolyl)pyridine and 2-phenylpyrazole, were investigated. Characteristics of heteroleptic complexes were compared to the homoleptic complexes. Phosphorescence radiation process is rationally explained by inter-ligand energy transfer, however, mer ā fac isomerization showed different behavior indicating participation of another excited state.
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