We have developed a great deal of chemistry around phosphorescent Iridium and Platinum complexes for monochromatic and white organic LEDs.  These materials give LEDs with efficiencies nearing the theoretical limits.  In this talk will highlight our most recent results with Copper based phosphors for electroluminescence.  Copper based materials offer the possibility of using lower cost materials, but are typically less stable than their Ir counterparts and have longer excited state lifetimes.  We have found that copper complexes with a single N-heterocyclic cabene and either a bidentate or tridentate pyridyl or pyrrazolyl based ligand (thus 3- or 4-coordinate copper) give high phosphorescence efficiencies in crystalline forms.  I will discuss the synthesis, structures and photophysical properties of these materials.

Luminescent 3- and 4-coordinate copper carbene complexes

248th National Meeting (2014)

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