Patent ID: 7718803

Claim:
A bipyridine-based metal complex represented by the following Formula I: wherein W 1 and W 2 are each independently atoms required to form a 4- to 8-membered heteroaryl group or heterocycloalkenyl group, and W 4 is atoms required to form 4- to 8-membered heteroaryl groups or heterocycloalkenyl groups; W 3 refers to atoms required to form one of a 0- or 6-membered cycloalkyl group, a cycloalkenyl group, an aryl group, a heteroaryl group, a heterocycloalkyl group, and a heterocycloalkenyl group; n is an integer of 1 to 5; R 1 , R 2 , R 3 , and R 4 are mono-substituents or a same or different multi-substituents, and are each independently one of a hydrogen atom, a halogen atom, a nitro group, —SO 3 H, —COOH, a substituted or unsubstituted alkyl group of C 1 -C 20 , a substituted or unsubstituted heteroalkyl group of C 1 -C 20 , a hydroxy group, an amino group, a cyano group, a substituted or unsubstituted alkenyl group of C 2 -C 20 , a substituted or unsubstituted alkoxy group of C 1 -C 20 , a substituted or unsubstituted alkylsulfonamide group of C 1 -C 20 , a substituted or unsubstituted arylsulfonamide group of C 6 -C 20 , a substituted or unsubstituted acylamino group of C 1 -C 20 , an alkylureido group of C 1 -C 20 , an arylureido group of C 6 -C 20 , an alkoxycarbonyl group of C 2 -C 20 , an alkoxycarbonylamino group of C 2 -C 20 , a carbamoyl group, a sulfamoyl group, a sulfo group or its salt, a carboxyl group or its salt, a substituted or unsubstituted hydroxyalkyloxyalkyl group of C 1 -C 20 , a substituted or unsubstituted dialkylaminoalkyl group of C 1 -C 20 , a substituted or unsubstituted pyridylalkyl group of C 6 -C 20 , a substituted or unsubstituted pyridyl group of C 5 -C 20 , a substituted or unsubstituted imidazolyl group of C 6 -C 20 , a hydrazine group, a hydrazone group, a substituted or unsubstituted pyridylalkyl group of C 1 -C 20 , a substituted or unsubstituted aryl group of C 6 -C 20 , a substituted or unsubstituted arylalkyl group of C 6 -C 20 , a substituted or unsubstituted heteroaryl group of C 6 -C 20 , a heteroarylalkyl group of C 6 -C 20 , a substituted or unsubstituted heteroarylalkenyl group of C 6 -C 20 , and a substituted or unsubstituted heterocycloalkyl group of C 3 -C 20 ; R 5 and R 6 are each independently a hydrophilic mono-substituent or a same or different hydrophilic multi-substituent; M is a metal atom selected from Groups III through XIV other than ruthenium (Ru) or copper (I); X is an anionic moiety; Y is a neutral moiety; Z is a counterion; o, p, and q are each independently an integer of 0 to 10, wherein a sum of o and p is not equal to zero, wherein X has a negative charge of −1 to −6 and is one or more selected from the group consisting of —R″C(═O)—O*, —R″CN*, —R″OO*, —R″O*, —R″SCN*, —R″N 3 *, —R″CO 3 *, and —R″SO 4 *, wherein the * represents the position at which the moiety X binds to the metal M and R″ is one of an alkylene of C 2 -C 20 , an arylene of C 6 -C 20 , heteroarylene of C 2 -C 20 , and —(CH 2 CH 2 O) z — where Z is 1 to 50.