Patent ID: 7718277

Claim:
An organic light emitting device comprising: a cathode; an anode; an electroluminescent material; and a polymeric organic iridium complex of structure XV wherein each of the ligands is independently at each occurrence a cyclometallated ligand derived from a phenylisoquinoline or a styrylisoquinoline, wherein each ligand may be the same or different; R 2 is independently at each occurrence a deuterium atom, a halogen, a nitro group, an amino group, a C 3 -C 40 aromatic radical, a C 1 -C 50 aliphatic radical, or a C 3 -C 40 cycloaliphatic radical; and “a” is an integer from 0 to 3; and wherein the substructure is a polymer chain comprising a benzene ring, wherein the benzene ring is attached to the CO group of the complex.