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US 8,822,708 B2Granted
Benzo-fused thiophene / triphenylene hybrid materials
AssigneeUniversal Display Corporation
InventorsBin Ma, Yonggang Wu, Chun Lin, Raymond Kwong
Life of this patent
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Abstract
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.
Claims20
A compound represented by the structure of Formula (IV):
- wherein X is S or O;
- wherein R2, represent mono, di, tri, tetra, or no substitutions;
- wherein R1′ represents mono, di, or no substitutions;
- wherein each R1, R1′, R2, and R3 is an unfused substituent independently selected from the group consisting of H, CnH2n+1, OCnH2n+1, OAr1, N(CnH2n+1)2, N(Ar1)(Ar2), CH═CH—CnH2n+1, C≡CCnH2n+1, Ar1, Ar1—Ar2, CnH2n—Ar1, wherein n is 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10;
- wherein Ar1 and Ar2 are independently selected from the group consisting of benzene, biphenyl, naphthalene, triphenylene, carbazole, and heteroaromatic analogs thereof;
- and
- wherein at least one of R1, R1′, R2, and R3 comprises a triphenylene group.
4 more elements
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 the structure of Formula (IV):
- or or Formula (V):
- wherein X is S or O;
- wherein R2 represent mono, di, tri, tetra, or no substitutions;
- wherein R1′ represents mono, di, or no substitutions;
- wherein each R1, R1′, R2, and R3 is an unfused substituent independently selected from the group consisting of H, CnH2n+1, OCnH2n+1, OAr1, N(CnH2n+1)2, N(Ar1)(Ar2), CH═CH—CnH2n+1, C≡CCnH2n+1, Ar1, Ar1—Ar2, CnH2n—Ar1, wherein n is 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10;
- wherein Ar1 and Ar2 are independently selected from the group consisting of benzene, biphenyl, naphthalene, triphenylene, carbazole, and heteroaromatic analogs thereof;
- and
- wherein at least one of R1, R1′, R2, and R3 comprises a triphenylene group.
9 more elements
Dependencies are inferred from the claim text.