Patent ID: 7416791
Filing Date: 2008-08-26
Classification: C07F,C09K,H01L,H05B,Y10S

Abstract:
1. A composition, comprising an osmium complex having the formula: wherein Os(II) comprises divalent osmium; N—N comprises a 2,2′-bipyridine ligand substituted with aryl, arylalkyl, alkenyl, alkoxy, amino, alkylamino, dialkylamino, or halogen, or a substituted or unsubstituted 1,10-phenanthroline ligand; L—L comprises a π-acid bidentate ligand; and A comprises a counter ion; and a host material, the host material having an emission spectrum and the osmium complex having an absorbance spectrum, wherein the host material emission spectrum and the osmium complex absorbance spectrum have a spectral overlap sufficient to effect energy transfer from the host material to the osmium complex.