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 3,
wherein R 7 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms and a group represented by General Formula 4;
wherein each of R 8 and R 9 is any one of hydrogen and alkyl group having 1 to 4 carbon atoms, and is identical or different;
wherein R 10 is an aryl group having 6 to 15 carbon atoms; and
wherein each of R 11 and R 12 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 is identical or different
2. The spirofluorene derivative according to claim 1 , represented by General Formula 9,
wherein R 25 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms and a group represented by General Formula 10;
wherein each of R 26 and R 27 is any one of hydrogen and an alkyl group having 1 to 4 carbon atoms, and is identical or different;
wherein R 28 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 each of R 29 and R 30 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 is identical or Different;
3. The spirofluorene derivative according to claim 2 , represented by General Formula 15,
wherein R 40 is any one of hydrogen, an alkyl group having 1 to 4 carbon atoms and a group represented by General Formula 16; and
wherein each of R 41 and R 42 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 20,
wherein each of R 48 and R 49 is nay 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 23,
wherein each of R 54 and R 55 is any one of hydrogen and an alkyl group having 1 to 4 carbon atoms, and is identical or different;
6. A spirofluorene derivative represented by Structural Formula 26;
7. A spirofluorene derivative represented by Structural Formula 29;
8. A material for a light-emitting element containing the spirofluorene derivative according to any one of claims 1 , 2 , 3 , 4 , 5 , 6 and 7 .
9. A light-emitting element containing the spirofluorene derivative according to any one of claims 1 , 2 , 3 , 4 , 5 , 6 and 7 .
10. The light-emitting element according to claim 9 , wherein the spirofluorene derivative is contained in a hole transporting layer of the light emitting element.
11. The light-emitting element according to claim 9 , wherein the spirofluorene derivative is contained in a hole injecting layer of the light emitting element.
12. The light-emitting element according to claim 9 , wherein the spirofluorene derivative is contained in a light emitting layer of the light emitting element as a host material.
13. A light-emitting device comprising:
the light-emitting element according to claim 9 ; and
a control circuit which controls light emission of the light-emitting element.
14. An electronic device comprising:
a display portion using the light-emitting element according to claim 9 ; and
a control circuit which controls light emission of the light-emitting element.