Patent ID: 7575817

Claim:
A cyclometalated transition metal complex represented by Formula I: [C^N] n1 M[P(Y 1 ) n2 (R 2 ) 3-n2 ] 3-n1 X (I) wherein M is a transition metal; C^N is a cyclometalated ligand; n1 is 1 or 2; n2 is an integer of 1 to 3; Y 1 is an alkylene oxide represented by Formula II: —(OR 2 ) n3 OR 3 (II) wherein R 2 is a C 2 -C 10 alkylene, R 3 is a hydrogen atom, a C 1 -C 30 alkyl group, a C 5 -C 14 cycloalkyl group, a C 1 -C 20 aryl group, a C 3 -C 1 , heterocyclic or methacrylate group, and n3 is an integer of 1 to 21; R 1 is selected from the group consisting of a hydrogen atom, an alkyl group, an alkynyl group, an aryl group, an amino group, an alkoxy group, an aryloxy group, an acyl group, an alkoxycarbonyl group, an acyloxy group, an acylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfonylamino group, a sulfamoyl group, a carbamoyl group, an arylthio group, a heteroarylthio group, a sulfonyl group, a sulfinyl group, an ureido group, a phosphoramido group, a hydroxy group, a mercapto group, a halogen atom, a cyano group, a sulfo group, a carboxy group, a nitro group, a hydroxaminic group, a heterocyclic group, a silyl group, and a phosphino group; and X is selected from the group consisting of Cl, OCN, CN, SCN, P(Ph) 2 , R′COOH, R′CONH, R′NH, a pyrazole, a substituted or unsubstituted alkyl, alkoxy or aryloxy group, NR′H, NR′ 2 , OH, SH and a sulfonic acid group, wherein R′ is a C 1 -C 10 alkyl group, a C 1 -C 14 cycloalkyl group or a C 5 -C 14 aryl group.