Light-emitting element and electronic device
An object is to provide a light-emitting element with high emission efficiency which includes a novel carbazole derivative that has a wide energy gap and can be used for a transport layer or a host material in a light-emitting element. A carbazole derivative in which the 4-position of dibenzothiophene or dibenzofuran is bonded to the 2- or 3-position of carbazole has been able to be provided by use of the carbazole derivative. Further, a light-emitting element having high emission efficiency has been able to be provided by use of the carbazole derivative.
1. A process for producing a material, the process including:
utilizing a compound represented by the following formula as a reactant:
wherein:
R 1 to R 7 are independently selected from hydrogen, an alkyl group having 1 to 6 carbon atoms, and an aryl group having 6 to 15 carbon atoms; and
X 1 is selected from oxygen or sulfur.
2. The process according to claim 1 ,
wherein the compound is reacted with an organic halide.
3. The process according to claim 1 ,
wherein the compound is reacted with an organic halide in the presence of a catalyst including palladium.
4. The process according to claim 2 ,
wherein:
the organic halide is represented by the following formula:
Ar—X 5 ;
Ar is selected from an aryl group having 6 to 70 carbon atoms and a heteroaromatic group having 1 to 70 carbon atoms; and
X 5 is halogen.
5. The process according to claim 4 ,
wherein the aryl group of Ar has a π-electron deficient heteroaromatic ring.
6. The process according to claim 1 ,
wherein the compound is represented by structural formula (2),
7. The process according to claim 1 ,
wherein the compound is represented by structural formula (4),
8. The process according to claim 1 ,
wherein the material is represented by any one of structural formulae (1), (3), (5), (6), (7), and (8),