Patent ID: 7022422

Claim:
A luminescent material for a light emitting device represented by any one of the following general formulae 3 to 14: wherein R 1 , R 2 and R 3 are H, C n H 2n+1 (n is an integer of 1 to 10), N(C n H 2n+1 ) 2 (n is an integer of 1 to 10), COOC n H 2n+1 (n is an integer of 1 to 10), F, Cl, Br, I, CN, an optionally substituted plenyl group, an optionally substituted naphthyl group or a phenyl methyl group, which may be the same or different from each other, provided that at least one of R 1 and R 2 is N(C n H 2n+1 ) 2 (n is an integer of 1 to 10), F, Cl, Br, I, CN, an optionally substituted phenyl group, an optionally substituted naphthyl group or a phenyl methyl group; and D is a ligand represented by the following general formulae 17 or 18: wherein R 4 , R 5 and R 6 are H, C n H 2n+1 (n is an integer of 1 to 10), N(C n H 2n+1 ) 2 (n is an integer of 1 to 10), COOC n H 2n+1 (n is an integer of 1 to 10), F, Cl, Br, I, CN, CF 3 , a furyl group, a thienyl group, an optionally substituted phenyl group or an optionally substituted naphthyl group, which may he the same or different from each other.