Polycarbazolyl(meth)acrylate light emissive compositions

Abstract

The present invention provides compositions comprising at least one phosphorescent organometallic compound and a polymer comprising structural units derived from at least one monomer of formula I wherein R1 is H or CH3; R2 is H or C1-C5 alkyl; R3 is H or CH3; R4 and R5 are independently H, CH3, t-butyl, triarylsilyl, trialkylsilyl, diphenyl phosphine oxide, or diphenyl phosphine sulfide; m ranges from about 1 to about 20; and n ranges from about 1 to about 20. The compositions of the invention are useful as light emissive layers in light emitting devices. Thus the present invention also provides an organic light emitting device comprising a light emissive layer comprising at least one phosphorescent organometallic compound and a polymer comprising structural units derived from at least one monomer of formula I.

Dependencies are inferred from the claim text.