Patent ID: 8779134

Claim:
A six-coordinated ruthenium complex represented by the following formula (I): RuL 1 L 2 L 3 (I) wherein L 1 represents a 2,2′-bipyridine-based bidentate ligand having at least two functional groups selected from the group consisting of COOH, a carboxylate group and the combination thereof; and L 2 and L 3 independently represent a 1-(haloalkylpyrazole)-isoquinoline-based bidentate ligand of formula (II) or formula (III); wherein R 1 and R 9 represent a haloalkyl group; and R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 10 , R 11 , R 12 , R 13 , and R 14 independently represent hydrogen, an isobutyl group, a hexyl group, or