Spirofluorene derivative, material for light-emitting element, light-emitting element, light-emitting device, and electronic device
It is an object of the present invention to provide a material having a high Tg and a wide energy gap. The present invention provides a spirofluorene derivative represented by General Formula 1. (In the formula, R 1 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, or a group represented by General Formula 2. Each of R 2 and R 3 is either hydrogen or an alkyl group having 1 to 4 carbon atoms and may be identical or different. R 4 is an aryl group having 6 to 15 carbon atoms. Each of R 5 and R 6 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 15 carbon atoms and may be identical or different.)
1. A spirofluorene derivative represented by General Formula 5,
wherein R 13 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms and a group represented by General Formula 6,
wherein each of R 14 and R 15 is any one of hydrogen and an alkyl group having 1 to 4 carbon atoms, and is identical or different,
wherein R 16 is an aryl group having 6 to 15 carbon atoms,
wherein R 17 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms and an aryl group having 6 to 15 carbon atoms, and
wherein R 18 is any one of an alkyl group having 1 to 4 carbon atoms and an aryl group having 6 to 15 carbon atoms
2. The spirofluorene derivative according to claim 1 , represented by General Formula 11,
wherein R 31 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms and a group represented by General Formula 12,
wherein each of R 32 and R 33 is any one of hydrogen and an alkyl group having 1 to 4 carbon atoms, and is identical or different,
wherein R 34 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms and an aryl group having 6 to 15 carbon atoms,
wherein R 35 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms and an aryl group having 6 to 15 carbon atoms, and
wherein R 36 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms and an aryl group having 6 to 15 carbon atoms
3. The spirofluorene derivative according to claim 2 , represented by General Formula 17,
wherein R 43 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms and a group represented by General Formula 18, and
wherein each of R 44 and R 45 is any one of hydrogen and an alkyl group having 1 to 4 carbon atoms, and is identical or different
4. The spirofluorene derivative according to claim 3 , represented by General Formula 21,
wherein each of R 50 and R 51 is any one of hydrogen and an alkyl group having 1 to 4 carbon atoms, and is identical or different
5. The spirofluorene derivative according to claim 3 , represented by General Formula 24,
wherein each of R 56 and R 57 is any one of hydrogen or an alkyl group having 1 to 4 carbon atoms, and is identical or different
6. A light-emitting element containing the spirofluorene derivative according to a claim 1 .
7. The light-emitting element according to claim 6 , wherein the spirofluorene derivative is contained in a hole transporting layer of the light emitting element.
8. The light-emitting element according to claim 6 , wherein the spirofluorene derivative is contained in a hole injecting layer of the light emitting element.
9. The light-emitting element according to claim 6 , wherein the spirofluorene derivative is contained in a light emitting layer of the light emitting element as a host material.
10. A light-emitting device comprising:
the light-emitting element according to claim 6 ; and
a control circuit which controls light emission of the light-emitting element.
11. An electronic device comprising:
a display portion using the light-emitting element according to claim 6 ; and
a control circuit which controls light emission of the light-emitting element.
12. A spirofluorene derivative represented by Structural Formula 27
13. A spirofluorene derivative represented by Structural Formula 30