Patent ID: 6936716

Claim:
An organometallic complex having formula (I) wherein M is a transition metal; each A 1 and A 2 is independently a monodentate ligand, or A 1 and A 2 are covalently joined together to form a bidentate ligand; R 1 is H, C 1-18 alkyl, C 1-18 alkoxy, C 3-18 heteroalkyl, C 3-20 aryl, C 3-20 heteroaryl, or C 3-20 cycloalkyl; R 2 is the same or different and is C 1-18 alkyl, C 1-18 alkoxy, C 3-18 heteroalkyl, C 3-20 aryl, C 3-20 heteroaryl, or C 3-20 cycloalkyl; R 3 is the same or different and is H, CN, tricyanovinyl, halogen, CX 3 , C 1-18 alkyl, C 1-18 alkoxy, C 3-18 heteroalkyl, C 3-20 aryl, C 3-20 heteroaryl, or C 3-20 cycloalkyl, wherein X is halogen; m is the charge of M; n is 1, 2, or 3.