Patent ID: 7776458

Claim:
A silyl-substituted cyclometalated transition metal complex represented by Formula (1): wherein M is a transition metal; X is S, or O; CY1 and CY2 are each an aromatic or aliphatic ring; A^ is a monoanionic bidentate chelating ligand selected from the group consisting of groups represented by Formulae (24) through (29): wherein Y is C, or N, with the proviso that all of Ys are not N; and R is each independently alkyl, arylalkyl, alkoxy, or aryloxy, in which each ring of arylalkyl or aryloxy may be substituted with halogen, CF 3 , CN, silyl, alkyl, aryl, alkoxy, aryloxy, amino, or arylene; at least one of CY1, CY2, and A^B has a silyl group represented by Formula SiR 1 R 2 R 3 , in which R 1 , R 2 , and R 3 are each independently alkyl, aryl, alkyloxy, or aryloxy; and m is 1 or 2.