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 X is S or O;
wherein R 1 to R 9 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, amino, alkenyl, alkynyl, arylalkyl, aryl, and heteroaryl; and
wherein each of R 1 to R 9 may represent mono substitutions up to the maximum possible substitutions, or no substitutions.
2. The compound of claim 1 , wherein X is O.
3. The compound of claim 1 , wherein X is S.
4. The compound of claim 1 , wherein each of R 1 to R 9 is aryl, heteroaryl, or no substitution.
5. The compound of claim 1 , wherein at least one R 1 , R 2 , R 3 , or R 4 is other than hydrogen.
6. The compound of claim 1 ,
wherein at least one R 5 is other than hydrogen, and
wherein the structure is selected from the group consisting of Compound 1G to Compound 30G and Compound 32G to Compound 48G.
7. The compound of claim 1 ,
wherein at least one R 6 is other than hydrogen, and
wherein the compound has a structure is selected from the group consisting of Compound 2G, Compound 3G, Compound 4G, Compound 5G, Compound 9G, Compound 10G, Compound 11G, Compound 16G, Compound 21G, Compound 22G, Compound 23G, Compound 24G, Compound 25G, Compound 26G, Compound 27G, Compound 28G, Compound 35G, Compound 36G, Compound 37G, Compound 38G, Compound 39G, Compound 40G, Compound 43G, Compound 44G, Compound 45G, Compound 46G, Compound 47G, and, Compound 48G.
8. The compound of claim 1 ,
wherein at least one R 6 is other than hydrogen, and
wherein the compound has a structure is selected from the group consisting of Compound 2G, Compound 3G, Compound 4G, Compound 50, Compound 9G, Compound 10G, Compound 11G, Compound 16G, Compound 21G, Compound 22G, Compound 23G, Compound 24G, Compound 25G, Compound 26G, Compound 27G, Compound 28G, Compound 35G, Compound 36G, Compound 37G, Compound 38G, Compound 39G, Compound 40G, Compound 43G, Compound 44G, Compound 45G, Compound 46G, Compound 47G, and Compound 48G.
9. The compound of claim 1 ,
wherein at least one R 7 is other than hydrogen, and
wherein the compound has a structure is selected from the group consisting of Compound 4G, Compound 5G, Compound 9G, Compound 10G, Compound 11G, Compound 16G, 21G, Compound 23G, Compound 25G, Compound 26G, Compound 27G, Compound 28G, Compound 37G, Compound 38G, Compound 39G, Compound 44G, and Compound 47G.
10. The compound of claim 1 ,
wherein at least one R 8 is other than hydrogen, and
wherein the compound has a structure is selected from the group consisting of Compound 4G, Compound 5G, Compound 27G, Compound 28G, Compound 38G, and Compound 39G.
11. The compound of claim 1 ,
wherein at least one R 9 is other than hydrogen, and the compound has a structure of Compound 4G.
12. The compound of claim 1 , having a structure selected from the group consisting of:
and
wherein X is S or O.
13. The compound of claim 12 , wherein X is O.
14. The compound of claim 12 , wherein X is S.
15. 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 X is S or O;
wherein R 1 to R 9 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, amino, alkenyl, alkynyl, arylalkyl, aryl, and heteroaryl; and
wherein each of R 1 to R 9 may represent mono substitutions up to the maximum possible substitutions, or no substitutions.
16. The organic light emitting device of claim 15 , wherein the organic layer further comprises a phosphorescent emitter.
17. The organic light emitting device of claim 16 , wherein the phosphorescent emitter is an iridium complex.
18. The organic light emitting device of claim 15 , wherein the compound is
19. The organic light emitting device of claim 15 , wherein the compound is