Patent ID: 7615636

Claim:
A ruthenium complex represented by Formula (I) of RuL 1 L 2 X: wherein L 1 represents a heterocyclic tridentate ligand with a structural formula (II): and L 2 represents a bipyridine ligand derivative with a structural formula (III): wherein R 1 , R 2 , R 4 and R 5 are the same or different substituents and represent alkyl, alkoxy, aminoalkyl, haloalkanes or substituted phenyl group, carboxylic acid group or acid radical salt thereof, sulfonic acid group or acid radical salt thereof, phosphoric acid group or acid radical salt thereof or hydrogen atom; R 3 represents perhalogenated alkyl group, alkoxy, alkyl, amino, halogens, or hydrogen atom; and X is a monodentate anion ligand.