Phosphorescent host material
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsTomoka Hara, Hideko Yoshizumi, Hiromitsu Kido, Satoshi Seo
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Abstract
A novel compound is provided. A light-emitting element with high emission efficiency and a long lifetime is provided. The compound is an organic compound that includes a benzofuro[3,2-d]pyrimidine or benzothieno[3,2-d]pyrimidine skeleton (General Formula (G0)). The 2-position of the benzofuro[3,2-d]pyrimidine or benzothieno[3,2-d]pyrimidine skeleton has a substituent and the 6- to 9-positions of the skeleton have at least one substituent. Any one of the substituents bonded to the 6- to 9-positions is bonded to the benzofuro[3,2-d]pyrimidine or benzothieno[3,2-d]pyrimidine skeleton via a phenylene group. A light-emitting element including the compound is provided.
Claims13
An organic compound represented by General Formula (GO),
- wherein in General Formula (GO):
- X represents oxygen or sulfur;
- each of A1 and A2 independently represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 carbon atoms or a substituted or unsubstituted heteroaromatic hydrocarbon group having 3 to 30 carbon atoms;
- Ar represents a substituted or unsubstituted arylene group having 6 to 25 carbon atoms;
- each of R1 to R4 independently represents hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 7 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 25 carbon atoms;
- n is an integer of 0 to 4;
- l is an integer of 1 to 4;
- and
- the organic compound comprises oxygen and sulfur.
An organic compound represented by General Formula (G1),
- wherein in General Formula (G1):
- X represents oxygen or sulfur;
- Ar represents a substituted or unsubstituted arylene group having 6 to 25 carbon atoms;
- each of R1 to R4 independently represents hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 7 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 25 carbon atoms;
- n is an integer of 0 to 4;
- l is an integer of 1 to 4;
- and
- each of Ht1 and Ht2 independently represents a substituted or unsubstituted fused heteroaromatic ring,
- wherein the fused heteroaromatic ring comprises one or more of a carbazole skeleton, a dibenzofuran skeleton, and a dibenzothiophene skeleton,
- wherein the fused heteroaromatic ring has 12 to 30 carbon atoms, and
- wherein the organic compound comprises oxygen and sulfur.
Dependencies are inferred from the claim text.