Light-emitting device and aromatic compound
View Patent ↗A light-emitting device comprising a pair of electrodes and a light-emitting layer or a plurality of organic layers comprising a light-emitting layer disposed therebetween, the light emitting layer or at least one of a plurality of organic layers comprising the light-emitting layer comprising at least one compound represented by the following general formula (1): wherein each of Ar 11 , Ar 12 , Ar 13 , Ar 14 and Ar 15 represents an aryl group or a heteroaryl group; Ar represents a benzene ring, a naphthalene ring; a phenanthrene ring or an anthracene ring; at least one of Ar, Ar 11 , Ar 12 , Ar 13 , Ar 14 and Ar 15 is a condensed aryl group, a condensed or uncondensed heteroaryl group or a group comprising a condensed aryl group or a condensed or uncondensed heteroaryl group; Ar 11 , Ar 12 , Ar 13 , Ar 14 and Ar 15 are not bonded to each other to form a ring; R 11 represents a substituent; and n 11 represents an integer of 0 or more.
1. A light-emitting device comprising a pair of electrodes and a light-emitting layer or a plurality of organic layers comprising a light-emitting layer disposed between said electrodes, said light-emitting layer or at least one of a plurality of organic layers comprising said light-emitting layer comprising at least one compound represented by the following general formula (5):
wherein each of Ar 51 , Ar 52 , Ar 53 and Ar 54 represents an aryl group; R 51 represents a hydrogen atom or a substituent; R 52 represents a substituent; and n 51 represents an integer of 0 to 9, and wherein in said general formula (5), each of Ar 51 , Ar 52 , Ar 53 and Ar 54 is selected from the group consisting of a phenyl group, a naphthyl group, an anthryl group and a phenanthryl group, and Ar 51 , Ar 52 , Ar 53 and Ar 54 and the 1-pyrenyl group are not bonded to each other to form a ring.
2. The light-emitting device of claim 1 , wherein in said general formula (5), Ar 51 is a naphthyl, anthryl or phenanthryl group.
3. The light-emitting device of claim 1 , wherein in said general formula (5), at least one of Ar 51 , Ar 52 , Ar 53 , and Ar 54 is selected from the group consisting of a naphthyl group, a phenanthryl group and an anthryl group.
4. The light-emitting device of claim 1 , wherein said compound represented by said general formula (1) emits light from a singlet excited state.
5. The light-emitting device of claim 1 , wherein in said general formula (5), R 51 is selected from the group consisting of a hydrogen atom, an alkyl group and an aryl group.
6. The light-emitting device of claim 5 , wherein in said general formula (5), each of Ar 51 , Ar 52 , Ar 53 and Ar 54 is selected from the group consisting of a phenyl group, a naphthyl group and a phenanthryl group.
7. The light-emitting device of claim 5 , wherein in said general formula (5), R 51 is selected from the group consisting of a hydrogen atom, a phenyl group and a pyrenyl group.
8. The light-emitting device of claim 1 , wherein in said general formula (5), at least three of Ar 51 , Ar 52 , Ar 53 and Ar 54 are a naphthyl, anthryl or phenanthryl group.
9. The light-emitting device of claim 1 , wherein in said general formula (5), each of Ar 51 and Ar 52 is a naphthyl, anthryl or phenanthryl group.
10. The light-emitting device of claim 1 , wherein in said general formula (5), each of Ar 51 and Ar 54 is a naphthyl, anthryl or phenanthryl group.
11. The light-emitting device of claim 1 , wherein in said general formula (5), R 51 is selected from the group consisting of a naphthyl group, a phenanthryl group, an anthryl group and a pyrenyl group.
12. The light-emitting device of claim 1 , wherein in said general formula (5), each of Ar 51 and Ar 52 is a naphthyl, anthryl or phenanthryl group R 51 is selected from the group consisting of a phenyl group, a naphthyl group, a phenanthryl group, an anthryl group and a pyrenyl group.
13. The light-emitting device of claim 1 , wherein the content
of said compound of said general formula (5) in said light-emitting layer is 0.1 to 100% by mass as a light-emitting material.
14. The light-emitting device of claim 1 , wherein the content of said compound of said general formula (5) in said light-emitting layer or at least one of a plurality of organic layers comprising said light-emitting layer is 10 to 99.9% by mass as a host material.
15. The light-emitting device of claim 1 , wherein at least one of said light-emitting layer and a plurality of organic layers comprising said light-emitting layer is a light-emitting layer.
16. The light-emitting device of claim 1 , wherein at least one of said light-emitting layer and a plurality of organic layers comprising said light-emitting layer is a hole-transporting layer.
17. A compound represented by the following general formula (5):
wherein each of Ar 51 , Ar 52 , Ar 53 and Ar 54 represents an aryl group; R 51 represents a hydrogen atom or a substituent; R 52 represents a substituent; and n 51 represents an integer of 0 to 9, wherein in said general formula (5), each of Ar 51 , Ar 52 , Ar 53 and Ar 54 is selected from the group consisting of a phenyl group, a naphthyl group an anthryl group, and a phenanthryl group, and Ar 51 , Ar 52 , Ar 53 and Ar 54 and the 1-pyrenyl group are not bonded to each to form a ring.
18. The compound of claim 17 , wherein in said general formula (5), R 51 is selected from the group consisting of a hydrogen atom, an alkyl group and an aryl group.