Organic electroluminescent materials and devices
Triphenylene containing benzo-fused thiophene compounds are provided. Additionally, triphenylene containing benzo-fused furan compounds are provided. The compounds may be useful in organic light emitting devices, particularly as hosts in the emissive layer of such devices, or as materials for enhancement layers in such devices, or both.
1. A compound represented by a structure selected from the group consisting of:
wherein R 1 , R 2 , R 5 , R 7 , R 8 , R 9 , R 10 , and R 12 represent mono, di, tri, tetra, or no substitutions;
wherein R 2 ′, R 3 , R 4 , R 5 ′, R 6 , and R 11 represents mono, di, tri, or no substitutions; and
wherein each R 1 , R 2 , R 2 ′, R 3 , R 4 , R 5 , R 5 ′, R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , and R 12 is an unfused substituent independently selected from the group consisting of hydrogen, alkyl, alkoxy, amino, alkenyl, alkynyl, arylalkyl, aryl, and heteroaryl.
2. The compound of claim 1 , wherein the compound is selected from the group consisting of:
3. The compound of claim 1 , having the structure of:
4. The compound of claim 1 , having the structure of:
5. The compound of claim 1 , having the structure of:
6. The compound of claim 1 , having the structure of:
7. The compound of claim 1 , having the structure of:
8. The compound of claim 1 , having the structure of:
9. The compound of claim 1 , having the structure of:
10. The compound of claim 1 , having the structure of:
11. The compound of claim 1 , having the structure of:
12. The compound of claim 1 , having the structure of:
13. The compound of claim 1 , having the structure of:
14. The compound of claim 1 , having the structure of:
15. The compound of claim 1 , having the structure of:
16. An organic light emitting device, comprising:
an anode;
a cathode; and
an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a compound represented by a structure selected from the group consisting of:
wherein R 1 , R 2 , R 5 , R 7 , R 8 , R 9 , R 10 , and R 12 represent mono, di, tri, tetra, or no substitutions;
wherein R 2 ′, R 3 , R 4 , R 5 ′, R 6 , and R 11 represents mono, di, tri, or no substitutions; and
wherein each R 1 , R 2 , R 2 ′, R 3 , R 4 , R 5 , R 5 ′, R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , and R 12 is an unfused substituent independently selected from the group consisting of hydrogen, alkyl, alkoxy, amino, alkenyl, alkynyl, arylalkyl, aryl, and heteroaryl.
17. The device of claim 16 , wherein the organic layer is an emissive layer.
18. The device of claim 17 , wherein the organic layer further comprises a phosphorescent emitter.
19. The device of claim 18 , wherein the phosphorescent emitter is an iridium complex.
20. The device of claim 16 , wherein the organic layer comprises Compound 2S
and an iridium complex.
21. The device of claim 16 , wherein aryl is independently selected from the group consisting of benzene, biphenyl, naphthalene, triphenylene, and carbazole.