| abstract |
A compound having a structure of the formula Ir(L<sub>A</sub>)(L<sub>B</sub>), in which L<sub>A</sub> is a bidentate, tridentate, tetradentate, pentadentate, or hexadentate ligand and L<sub>B</sub> is a monodentate, bidentate, tridentate, or tetradentate ligand, or not present, and where the total denticity of L<sub>A</sub> plus L<sub>B</sub> is 6, and L<sub>A</sub> includes at least one structure of Formula I:is disclosed as a useful phosphorescent emitter compound. |