Quinoxaline derivative, light-emitting element, light-emitting device, and electronic appliance
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsMasakazu Egawa, Atsushi Tokuda, Satoko Shitagaki
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Abstract
It is an object to provide a new substance excellent in electron-transporting property, and a light-emitting element and a light-emitting device using the substance. A quinoxaline derivative represented by the general formula (G1) is provided. In the general formula (G1), each of R1 to R4 represents hydrogen, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 25 carbon atoms; and each of Ar1 and Ar2 represents an aryl group having 6 to 25 carbon atoms. Such a quinoxaline derivative is excellent in electron-transporting property and very effective as an electron-transporting material in a light-emitting element and the like.
Claims5
A quinoxaline derivative represented by a general formula (G1),
- wherein each of R1 and R2 represents hydrogen,
- wherein each of R3 and R4 represents hydrogen or an unsubstituted phenyl group,
- wherein R3 and R4 have the same structure, and
- wherein each of Ar1 and Ar2 has any one of structures represented by following structural formulas (2′-5) to (2′-7)
Dependencies are inferred from the claim text.