Electroluminescent complexes of Ir(III) and devices
View Patent ↗There are provided compounds of Ir(III) having β-diketimine ligands including the complexes having Formula I: L is the same or different at each occurrence and is a cyclometalating bidentate monoanionic ligand coordinated through a nitrogen atom and a carbon atom. R 1 and R 3 can be the same or different and are independently selected from hydrogen, halogen, alkyl, aryl, alkylaryl and heterocyclic groups. R 10 and R 11 can be the same or different and are independently selected from hydrogen, halogen, alkyl, aryl, alkylaryl, trialkylsilyl, triarylsilyl, and heterocyclic groups. R 2 is hydrogen, alkyl, aryl, alkylaryl, heterocyclic groups, or fluorine. Adjacent R groups can join together to form 5- or 6-membered rings. R 8 is H, F, or alkyl. There are also provided electronic devices containing such compounds.
1. A complex having Formula II, Formula III, Formula IV, Formula V, or Formula VI:
where:
R 1 and R 3 can be the same or different and are independently selected from the group consisting of hydrogen, halogen, alkyl, aryl, alkylaryl and heterocyclic groups;
R 10 and R 11 can be the same or different and are independently selected from the group consisting of hydrogen, halogen, alkyl, aryl, alkylaryl, trialkylsilyl, triarylsilyl, and heterocyclic groups;
R 2 is selected from the group consisting of hydrogen, alkyl, aryl, alkylaryl, heterocyclic groups, and fluorine;
R 4 , R 5 , R 6 and R 7 are each independently selected from the group consisting of H, F, CN, alkyl, alkoxyl, trialkylsilyl, triarylsilyl, and aryl; and
R 8 and R 9 are each independently selected from the group consisting of H, F, and alkyl.
2. The complex of claim 1 , wherein at least one of R 4 , R 5 , R 6 , R 7 , R 8 , and R 9 is not hydrogen.
3. The complex of claim 1 , wherein at least one of R 4 , R 5 , R 6 , and R 7 is selected from the group consisting of CF 3 , C 2 F 5 , n-C 3 F 7 , i-C 3 F 7 , C 4 F 9 and CN.
4. The complex of claim 1 , wherein R 4 and R 6 are F.
5. The complex of claim 1 having Formula V, wherein R 4 is not F.
6. A complex having a formula selected from the group consisting of:
7. A composition comprising the compound of claim 1 , and a solvent, a processing aid, a charge transporting material, a charge blocking material, or combinations thereof.
8. An electronic device comprising at least one layer comprising a layer comprising at least one compound of claim 1 .
9. The device of claim 8 , wherein the layer is a photoactive layer.