Fluorene derivative, light-emitting element, light-emitting device, electronic device, and lighting device
An object is to provide a light-emitting element having high light-emission efficiency by provision of a novel fluorene derivative as represented by General Formula (G1) below. In the formula, R 1 to R 8 independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted biphenyl group. Further, α 1 to α 4 independently represent any of a substituted or unsubstituted arylene group having 6 to 12 carbon atoms. Furthermore, Ar 1 and Ar 2 independently represent any of an aryl group having 6 to 13 carbon atoms in a ring and Ar 3 represents an alkyl group having 1 to 6 carbon atoms or a substituted or unsubstituted aryl group having 6 to 12 carbon atoms. J, k, m, and n each independently represent 0 or 1.
1. A compound represented by a Formula (b1):
wherein:
R 1 to R 8 independently represent any one of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group;
α 2 to α 4 independently represent a substituted or unsubstituted arylene group having 6 to 12 carbon atoms;
Ar 2 represents an aryl group having 6 to 12 carbon atoms in a ring, and Ar 4 represents any one of an alkyl group having 6 to 12 carbon atoms and a substituted or unsubstituted aryl group having 6 to 12 carbon atoms;
J and k independently represent 0 or 1, and at least one of J and k is 1; and
n represents 1.
2. The compound according to claim 1 , wherein R 1 to R 8 independently represent any one of Formulae (R-1) to (R-9):
3. The compound according to claim 1 , wherein α 2 to α 4 independently represent any one of Formulae (α-1) to (α-3):
4. The compound according to claim 1 ,
wherein Ar 2 represents any one of Formulae (Ar-1) to (Ar-3):
and
wherein Ar 4 represents any one of Formulae (Ar3-1) to (Ar3-8):
5. A synthesis method of a fluorene derivative comprising:
coupling a first compound and a second compound,
wherein the first compound is represented by a Formula (b1):
wherein:
R 1 to R 8 independently represent any one of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group;
α 2 to α 4 independently represent a substituted or unsubstituted arylene group having 6 to 12 carbon atoms;
Ar 2 represents an aryl group having 6 to 12 carbon atoms in a ring, and Ar 4 represents any one of an alkyl group having 6 to 12 carbon atoms and a substituted or unsubstituted aryl group having 6 to 12 carbon atoms;
J and k independently represent 0 or 1, and at least one of J and k is 1; and
n represents 1,
wherein the second compound is represented by a Formula (a4),
wherein:
α 1 represents a substituted or unsubstituted arylene group having 6 to 12 carbon atoms;
Ar 1 represents an aryl group having 6 to 13 carbon atoms in a ring;
m represents 0 or 1; and
X 3 represents halogen.
6. The synthesis method of a fluorene derivative according to claim 5 ,
wherein R 1 to R 8 independently represent any one of Formulae (R-1) to (R-9):
7. The synthesis method of a fluorene derivative according to claim 5 ,
wherein α 1 to α 4 independently represent any one of Formulae (α-1) to (α-3):
8. The synthesis method of a fluorene derivative according to claim 5 ,
wherein Ar 1 and Ar 2 independently represent any one of Formulae (Ar-1) to (Ar-3):
and
wherein Ar 4 represents any one of Formulae (Ar3-1) to (Ar3-8):
9. The synthesis method of a fluorene derivative according to claim 5 , wherein X 3 represents any one of bromine and iodine.