Tetradentate platinum (II) and palladium (II) complexes, devices, and uses thereof
View Patent ↗The complexes disclosed herein are cyclometalated metal complexes of Formula (I) that are useful for full color displays and lighting applications.
1. A complex of Formula I:
wherein:
M is Pt or Pd;
ring A and ring B each independently represents substituted or unsubstituted 5 or 6-membered aryl, or substituted or unsubstituted 5 or 6-membered heteroaryl having one or more U heteroatoms or one or more U1 heteroatoms, wherein U and U1 are each independently selected from N, P, As, O, S, and Se;
Y 1a , Y 1b and Y 1c each independently represents O, S, S(O), S(O) 2 , Se, Se(O), Se(O) 2 , N, NR 5a , P, PR 5a , As, AsR 5a , O═NR 5a , O═PR 5a , O═AsR 5a , B, BR 5a , SiR 5a , SiR 5b R 5c , CR 5a , or CR 5b R 5c ;
Y 2a , Y 2b , Y 2c and Y 2d each independently represents C or N;
Y 3a , Y 3b , Y 3c , Y 3d Y 4a , Y 4b , Y 4c , and Y 4d each independently represents C, N, Si, O, or S;
R 1 , R 2 , R 3 , and R 4 each independently represents hydrogen, halogen, hydroxy, amino, nitro, thiol, Si(C 1 -C 4 alkyl) 3 , substituted or unsubstituted C 1 -C 4 alkyl, substituted or unsubstituted alkoxy, substituted or unsubstituted aryl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, or substituted or unsubstituted heterocycloalkyl;
R 5a , R 5b , and R 5c each independently represents hydrogen, substituted or unsubstituted C 1 -C 4 alkyl, or substituted or unsubstituted aryl;
each of L 1 , L 2 , L 3 , L 4 , L 5 and L 6 independently is absent, substituted or unsubstituted aryl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocycloalkyl,
is independently
is independently
is independently
wherein X 1 , X 2 , X 3 , X 4 , X 5 and X 6 each independently is absent or represents a bond, O, S, S(O), S(O) 2 , Se, Se(O), Se(O) 2 , NR 7a , P, PR 7a , As, AsR 7a , O═NR 7a , O═PR 7a , O═AsR 7a , B, BR 7a , SiR 7a R 7b , or CR 7a R 7b ;
R 7a and R 7b each independently represents hydrogen, substituted or unsubstituted C 1 -C 4 alkyl, or substituted or unsubstituted aryl;
R 5 , R 6 and R 7 each independently represents hydrogen, halogen, hydroxy, amino, nitro, thiol, Si(C 1 -C 4 alkyl) 3 , substituted or unsubstituted C 1 -C 4 alkyl, substituted or unsubstituted alkoxy, substituted or unsubstituted aryl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heteroaryl, or substituted or unsubstituted heterocycloalkyl;
m, n, o, and p each independently represents 1, 2, or 3; and
t, u, and v each independently represents 1, 2, 3, 4, or 5.
2. The complex of claim 1 having a formula selected from:
3. The complex of claim 1 having Formula IIa:
4. The complex of claim 1 having Formula IIIa:
5. The complex of claim 1 having Formula IIb:
6. The complex of claim 1 having Formula IIIb:
7. The complex of claim 1 having Formula IVb:
8. The complex of claim 1 , wherein M is Pt.
9. The complex of claim 1 , wherein R 1 , R 2 , R 3 and R 4 each independently represents hydrogen, halogen, hydroxy, amino, substituted or unsubstituted C 1 -C 4 alkyl, or substituted or unsubstituted alkoxy.
10. The complex of claim 1 , wherein R 3 and R 4 are each independently substituted or unsubstituted C 1 -C 4 alkyl.
11. The complex of claim 1 , wherein R 1 and R 2 are hydrogen.
12. The complex of claim 1 , wherein R 5 , R 6 , and R 7 each independently represents hydrogen, halogen, hydroxy, amino, substituted or unsubstituted C 1 -C 4 alkyl, or substituted or unsubstituted alkoxy.
13. The complex of claim 1 , wherein R 5 , R 6 , and R 7 are hydrogen.
14. The complex of claim 1 , wherein Y 1a is O.
15. The complex of claim 1 , wherein Y 1b is N.
16. The complex of claim 1 , wherein Y 1c is N.
17. The complex of claim 1 , wherein Y 2a , Y 2c , Y 2b , and Y 2d are C.
18. The complex of claim 1 , wherein Y 3d and Y 4d are N, and Y 3c and Y 4c are C.
19. A complex which is
20. A light emitting device comprising the complex of claim 1 .