Patent ID: 7491823

Claim:
A compound selected from the group consisting of: wherein Z 3 is selected from the group consisting of O, S, N—R 6 , or P—R 6 , wherein R 6 is independently selected from the group consisting of alkyl, alkenyl, alkynyl, aralkyl, O—R′, N(R′) 2 , SR′, C(O)R′, C(O)OR′, C(O)NR′ 2 , CN, CF 3 , NO 2 , SO 2 , SOR′, SO 3 R′, halo, and heteroaryl; each R′ is independently selected from H, alkyl, alkenyl, alkynyl, heteroalkyl, aralkyl, aryl, and heteroaryl; and A is independently selected from C, N, O, P, or S; (X—Y) is a bidentate photoactive ligand or a bidentate ancillary ligand; ring B is independently an aromatic cyclic, heterocyclic, fused cyclic, or fused heterocyclic ring, wherein ring B can be optionally substituted with one or more substituents R 14 ; and ring D is independently a cyclic, heterocyclic, fused cyclic, or fused heterocyclic ring with at least one carbon atom coordinated to metal M, wherein ring D can be optionally substituted with one or more substituents R 15 ; and R 14 and R 15 are independently selected from alkyl, alkenyl, alkynyl, aralkyl, R′, O—R′, N(R′) 2 , SR′, C(O)R′, C(O)OR′, C(O)NR′ 2 , CN, CF 3 , NO 2 , SO 2 , SOR′, SO 3 R′, halo, aryl, and heteroaryl; each R′ is independently selected from H, alkyl, alkenyl, alkynyl, heteroalkyl, aralkyl, aryl, and heteroaryl; or alternatively, two R 14 groups on adjacent ring atoms and R 15 groups on adjacent ring atoms form a fused 5- or 6-membered cyclic group, wherein said cyclic group is cycloalkyl, cycloheteroalkyl, aryl or heteroaryl; and wherein said cyclic group is optionally substituted by one or more substituents J; b is 0, 1, 2, 3, or 4; e is 0, 1, 2, or 3; m has a value from 1 to the maximum number of ligands that may be attached to the metal; and m+n is the maximum number of ligands that may be attached to metal M.