Compound, light emitting material, and organic light emitting device
A compound represented by A-D-A is useful as a light. emitting material used in an organic electroluminescent device and others.
1. A compound represented by the following general
formula (2):
wherein in the general formula (2), R 1 to R 5 each independently represent a hydrogen atom, a cyano group or an alkyl group having from 1 to 10 carbon atoms, provided that R 2 and at least one of R 1 , R 4 and R 5 represent a cyano group; R 6 to R 10 each independently represent a hydrogen atom, a cyano group or an alkyl group having from 1 to 10 carbon atoms, provided that at least R 7 and two of R 6 , R 9 and R 10 represents a cyano group; and R 11 to R 17 and R 21 to R 27 each independently represent a hydrogen atom or an alkyl group having from 1 to 10 carbon atoms.
2. The compound according to claim 1 , wherein the two cyanobenzenes bonded to the nitrogen atoms of the carbazole rings in the general formula (2) have the same structure.
3. The compound according to claim 1 , wherein in the general formula (2), R 2 , R 4 , R 7 and R 9 each represent a cyano group.
4. The compound according to claim 1 , wherein in the general formula (2), R 1 to R 5 and R 6 to R 10 except for those representing a cyano group each represent a hydrogen atom, and R 11 to R 17 and R 21 to R 27 each represent a hydrogen atom.
5. A light emitting material comprising the compound according to claim 1 .
6. A compound represented by the following general formula (2):
General Formula (2)
wherein in the general formula (2), R 1 to R 5 each independently represent a hydrogen atom, a cyano group or an alkyl group having from 1 to 10 carbon atoms, provided that R 1 and at least one of R 2 , R 4 and R 5 represent a cyano group; R 6 to R 10 each independently represent a hydrogen atom, a cyano group or an alkyl group having from 1 to 10 carbon atoms, provided that at least two of R 6 , R 7 , R 9 and R 10 represents a cyano group; and R 11 to R 17 and R 21 to R 27 each independently represent a hydrogen atom or an alkyl group having from 1 to 10 carbon atoms.
7. The compound according to claim 6 , wherein in the general formula (2), R 1 , R 5 , R 6 and R 10 each represent a cyano group.
8. An organic light emitting device comprising a substrate having thereon a light emitting layer containing the light emitting material according to claim 5 as a light emitting material.
9. The organic light emitting device according to claim 8 , wherein the organic light emitting device emits delayed fluorescent light.
10. The organic light emitting device according to claim 8 , wherein the organic light emitting device is an organic electroluminescent device.