Compound, organic electroluminescence device material, organic electroluminescence device and electronic device
A compound is represented by a formula (1) below. In the formula (1), X 1 to X 8 each independently represent a carbon atom to be bonded to a group represented by the following formula (20), CR X or a nitrogen atom. At least one of X 1 to X 8 is a carbon atom to be bonded to the group represented by the following formula (2). R X is each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, or the like.
1. A compound represented by formula (1),
where:
X 1 to X 8 each independently represent a carbon atom bonded to a group represented by formula (2), CR X , or a nitrogen atom;
at least one of X 1 to X 8 is a carbon atom bonded to a group represented by formula (2);
each R X is independently selected from the group consisting of:
a hydrogen atom,
a halogen atom,
a cyano group,
a nitro group,
a substituted or unsubstituted hydroxyl group,
a substituted or unsubstituted carboxyl group,
a substituted or unsubstituted sulfonyl group,
a substituted or unsubstituted boryl group,
a substituted or unsubstituted phosphino group,
a substituted or unsubstituted mercapto group,
a substituted or unsubstituted acyl group,
a substituted or unsubstituted amino group,
a substituted or unsubstituted silyl group,
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms,
a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms,
a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms,
a substituted or unsubstituted aryl group having 6 to 40 ring carbon atoms, and
a substituted or unsubstituted heteroaryl group having 5 to 40 ring atoms; and
among X 1 to X 8 , adjacent R X of CR X are bonded to each other to form a cyclic structure, or are not bonded to each other;
where:
b is an integer of 1 to 5;
c is an integer of 1 to 8;
Z is an oxygen atom, a sulfur atom or a silicon atom;
when b is 2 to 5, plural Z are the same or different;
when Z is a silicon atom, R 9 and R 10 are bonded to the silicon atom, R 9 and R 10 each independently represent R X as defined in formula (1), and R 9 and R 10 are optionally bonded to the structure represented by formula (1);
when Z is a silicon atom, R 9 and R 10 are not bonded to each other to form a cyclic structure;
L is a single bond or a linking group;
the linking group is a substituted or unsubstituted, linear, branched or cyclic polyvalent aliphatic hydrocarbon group having 1 to 30 carbon atoms, a substituted or unsubstituted polyvalent aryl group having 6 to 40 ring carbon atoms, or a substituted or unsubstituted polyvalent heteroaryl group having 5 to 40 ring atoms;
the polyvalent heteroaryl group having 5 to 40 ring atoms for L is a group selected from
a substituted or unsubstituted polyvalent group derived from a phenanthroline ring represented by formula (1), a pyrroyl group, a pyrazinyl group, a pyridinyl group, an indolyl group, an isoindolyl group, a furyl group, a benzofuranyl group, an isobenzofuranyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a quinolyl group, an isoquinolyl group, a quinoxalinyl group, a carbazolyl group, a phenanthrydinyl group, a phenanthrolinyl group, a thienyl group, and a group formed based on a pyridine ring, a pyrazine ring, a pyrimidine ring, a pyridazine ring, a triazine ring, an indole ring, a quinoline ring, a pyrrolidine ring, a dioxane ring, a piperidine ring, a morpholine ring, a piperazine ring, a carbazole ring, a furan ring, a thiophene ring, an oxazole ring, an oxadiazole ring, a benzoxazole ring, a thiazole ring, a thiadiazole ring, a benzothiazole ring, a triazole ring, an imidazole ring, a benzimidazole ring, a pyran ring, a dibenzofuran ring, a benzo[c]dibenzofuran ring, or a silafluorene ring;
when c is 2 to 8, plural L are the same or different;
Y 1 to Y 8 each independently represent a nitrogen atom, CR Y , or a carbon atom bonded to L;
each R Y is a hydrogen atom;
when X 1 or X 8 is a carbon atom bonded to the group represented by formula (2), h is 1, Z is an oxygen atom, Y 4 or Y 5 is a carbon atom bonded to L, and c is 2, the L closer to the phenanthroline ring represented by formula (1) is a divalent group other than an anthracene group;
when two of X 1 to X 8 are carbon atoms bonded to the group represented by formula (2), b and c are 1, both of Z are sulfur atoms, Y 4 or Y 5 is a carbon atom bonded to L, and L is a p-phenylene group, L is bonded to any one of X 1 , X 2 , X 4 , X 5 , X 7 and X 8 ;
when X 1 or X 8 is a carbon atom bonded to the group represented by formula (2), b and c are 1, Z is an oxygen atom or a sulfur atom, Y 3 is a carbon atom bonded to L, and L is a p-phenylene group, Y 4 is CR Y , R Y being a group other than a phenyl group;
when X 1 or X 8 is a carbon atom bonded to the group represented by formula (2), b and c are 1, Z is an oxygen atom or a sulfur atom, Y 6 is a carbon atom bonded to L, and L is a p-phenylene group, Y 5 is CR Y , R Y being a group other than a phenyl group;
when X 4 or X 5 is a carbon atom bonded to the group represented by formula (2), Y 2 is a carbon atom bonded to L, L is a single bond, and Z is an oxygen atom, Y 7 is CR Y , R Y being a group other than a pyrenyl group; and
when X 4 or X 5 is a carbon atom bonded to the group represented by formula (2), Y 7 is a carbon atom bonded to L, L is a single bond, and Z is an oxygen atom, Y 2 is CR Y , R Y being a group other than a pyrenyl group.
2. The compound according to claim 1 , wherein X 1 or X 8 is a carbon atom bonded to the group represented by formula (2).
3. The compound according to claim 1 , wherein X 1 and X 8 are carbon atoms bonded to the group represented by formula (2).
4. The compound according to claim 1 , wherein X 3 and X 6 are carbon atoms bonded to the group represented by formula (2).
5. The compound according to claim 1 , wherein X 2 or X 7 is a carbon atom bonded to the group represented by formula (2).
6. The compound according to claim 1 , wherein X 3 or X 6 is a carbon atom bonded to the group represented by formula (2).
7. The compound according to claim 1 , wherein X 4 or X 5 is a carbon atom bonded to the group represented by formula (2).
8. The compound according to claim 1 , wherein X 1 and X 7 are carbon atoms bonded to the group represented by formula (2).
9. The compound according to claim 1 , wherein X 1 and X 7 are carbon atoms bonded to the group represented by formula (2).
10. The compound according to claim 1 , wherein X 1 , X 7 , and X 8 are carbon atoms bonded to the group represented by formula (2).
11. The compound according to claim 1 , wherein X 1 , X 3 , X 6 , and X 8 are carbon atoms bonded to the group represented by formula (2).
12. The compound according to claim 1 , wherein the compound is represented by formula (1-1),
where:
A2 and A3 each independently represent a structure represented by formula (1);
c 1 is an integer of 1 to 8;
c 2 is an integer of 1 to 8;
L 1 and L 2 each independently represent L as defined in formula (2); and
Y 1 to Y 8 , Z, b, and X 1 to X 8 are as defined in formulae (1) and (2).
13. The compound according to claim 1 , wherein Z is an oxygen atom or a sulfur atom.
14. The compound according to claim 1 , wherein Z is an oxygen atom.
15. The compound according to claim 1 , wherein c is an integer of 1 to 5.
16. The compound according to claim 1 , wherein adjacent R X of CR X are not bonded to each other.
17. The compound according to claim 1 , wherein X 1 to X 8 each independently represent a carbon atom bonded to the group represented by formula (2) or CR X .
18. The compound according to claim 1 , wherein the substituted or unsubstituted polyvalent aryl group having 6 to 40 ring carbon atoms is a substituted or unsubstituted polyvalent aryl group having 6 to 12 ring carbon atoms.
19. The compound according to claim 1 , wherein neither X 4 nor X 5 is a carbon atom bonded to the group of formula (2).
20. The compound according to claim 1 , wherein L is a substituted or unsubstituted polyvalent aryl group having 6 to 12 ring carbon atoms, or a substituted or unsubstituted polyvalent heteroaryl group having 5 to 12 ring atoms.
21. The compound according to claim 1 , wherein L is a single bond, a substituted or unsubstituted polyvalent aryl group having 6 to 12 ring carbon atoms, or a substituted or unsubstituted polyvalent heteroaryl group having 5 to ring atoms.
22. The compound according to claim 1 , wherein L is a single bond, or a substituted or unsubstituted phenylene group.
23. The compound according to claim 1 , wherein L is a substituted or unsubstituted phenylene group.
24. An organic electroluminescence device comprising:
an anode;
a cathode opposed to the anode; and
an organic compound layer provided between the anode and the cathode; wherein;
the organic compound layer comprises an emitting layer and an electron transporting layer provided between the emitting layer and the cathode; and
the electron transporting layer comprises a compound represented by the formula) as defined in claim 1 .
25. The organic electroluminescence device according to claim 24 , further comprising a blocking layer between the electron transporting layer and the emitting layer.
26. The organic electroluminescence device according to claim 24 , wherein the electron transporting layer is adjacent to the emitting layer.
27. The organic electroluminescence device according to claim 24 , wherein the electron transporting layer comprises at least one of an electron-donating dopant and an organic metal complex.
28. An electronic device comprising the organic electroluminescence device according to claim 24 .
29. A compound represented by the following formula (1),
where:
X 1 to X 8 each independently represent a carbon atom bonded to a group represented by the following formula (2), CR X or a nitrogen atom; two or more of X 1 to X 8 are carbon atoms bonded to a group represented by formula (2);
each R X is independently selected from the group consisting of:
a hydrogen atom,
a halogen atom,
a cyano group,
a nitro group,
a substituted or unsubstituted hydroxyl group,
a substituted or unsubstituted carboxyl group,
a substituted or unsubstituted sulfonyl group,
a substituted or unsubstituted boryl group,
a substituted or unsubstituted phosphino group,
a substituted or unsubstituted mercapto group,
a substituted or unsubstituted acyl group,
a substituted or unsubstituted amino group,
a substituted or unsubstituted silyl group,
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms,
a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms,
a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms,
a substituted or unsubstituted aryl group having 6 to 40 ring carbon atoms, and
a substituted or unsubstituted heteroaryl group having 5 to 40 ring atoms; and
among X 1 to X 8 , adjacent R X of CR X are bonded to each other to form a cyclic structure, or are not bonded to each other;
where: b is an integer of 1 to 5;
c is an integer of 1 to 8;
Z is an oxygen atom; a sulfur atom or a silicon atom; when b is 2 to 5, plural Z are the same or different; when Z is a silicon atom, R 9 and R 10 are bonded to the silicon atom, R 9 and R 10 each independently represent R X as defined in formula (1), and R 9 and R 10 are optionally bonded to the structure represented by formula (1); when Z is a silicon atom, R 9 and R 10 are not bonded to each other to form a cyclic structure;
L is a single bond or a linking group;
the linking group is a substituted, or unsubstituted, linear, branched or cyclic polyvalent aliphatic hydrocarbon group having 1 to 30 carbon atoms, a substituted or unsubstituted polyvalent aryl group having 6 to 40 ring carbon atoms, or a substituted or unsubstituted polyvalent heteroaryl group having 5 to 40 ring atoms;
the polyvalent heteroaryl group having 5 to 40 ring atoms for L is a group selected from a substituted or unsubstituted polyvalent group derived from a phenanthroline ring represented by formula (1), a pyrrolyl group, a pyrazinyl group, a pyridinyl group, an indolyl group, an isoindolyl group, a furyl group, a benzofuranyl group, an isobenzofuranyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a quinolyl group, an isoquinolyl group, a quinoxalinyl group, a carbazolyl group, a phenanthrydinyl group, a phenanthrolinyl group, a thienyl group, and a group based on a pyridine ring, a pyrazine ring, a pyrimidine ring, a pyridazine ring, a triazine ring, an indole ring, a quinoline ring, a pyrrolidine ring, a dioxane ring, a piperidine ring, a morpholine ring, a piperazine ring, a carbazole ring, a furan ring, a thiophene ring, an oxazole ring, an oxadiazole ring, a benzoxazole ring, a thiazole ring, a thiadiazole ring, a benzothiazole ring, a triazole ring, an imidazole ring, a benzimidazole ring, a pyran ring, a dibenzofuran ring, a benzo[c]dibenzofuran ring, or a silafluorene ring;
when c is 2 to 8, plural L are the same or different;
Y 1 to Y 8 each independently represent a nitrogen atom, CR Y , or a carbon atom bonded to L;
each R Y is independently selected from the group consisting of:
a hydrogen atom,
a halogen atom,
a cyano group,
a nitro group,
a substituted or unsubstituted hydroxyl group,
a substituted or unsubstituted carboxyl group,
a substituted or unsubstituted sulfonyl group,
a substituted or unsubstituted boryl group,
a substituted or unsubstituted phosphino group,
a substituted or unsubstituted mercapto group,
a substituted or unsubstituted acyl group,
a substituted or unsubstituted amino group,
a substituted or unsubstituted silyl group,
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms,
a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms,
a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms,
a substituted or unsubstituted aryl group having 6 to 40 ring carbon atoms, and
a substituted or unsubstituted heteroaryl group having 5 to 40 ring atoms;
the heteroaryl group having 5 to 40 ring atoms for R Y comprises a substituted or unsubstituted phenanthrolyl group derived from the phenanthroline ring represented by formula (1);
adjacent R Y are bonded to each other to form a cyclic structure, or are not bonded to each other;
when X 1 or X 8 is a carbon atom bonded to the group represented by formula (2), b is 1, Z is an oxygen atom, Y 4 or Y 5 is a carbon atom bonded to L, and c is 2, the L closer to the phenanthroline ring represented by formula (1) is a divalent group other than an anthracene group;
when two of X 1 to X 8 are carbon atoms bonded to the group represented by formula (2), b and c are 1, both of Z are sulfur atoms, Y 4 or Y 5 is a carbon atom bonded to L, and L is a p-phenylene group, L is bonded to any one of X 1 , X 2 , X 4 , X 5 , X 7 and X 8 ;
when X 1 or X 8 is a carbon atom bonded to the group represented by formula (2), b and c are 1, Z is an oxygen atom or a sulfur atom, Y 3 is a carbon atom bonded to L, and L is a p-phenylene group, Y 4 is CR Y , R Y being a group other than a phenyl group;
when X 1 or X 8 is a carbon atom bonded to the group represented by formula (2), b and c are 1, Z is an oxygen atom or a sulfur atom, Y 6 is a carbon atom bonded to L, and L is a p-phenylene group, Y 5 is CR Y , R Y being a group other than a phenyl group;
when X 1 or X 8 is a carbon atom bonded to the group represented by formula (2), Z is a silicon atom, Y 3 is a carbon atom bonded to L, L is a single bond, and Y 6 is CR Y , R Y being the phenanthrolyl group of the heteroaryl group having 5 to 40 ring atoms in CR Y for Y 6 , R Y bonds to C at a position other than position 2 of the phenanthrolyl group;
when X 4 or X 5 is a carbon atom bonded to the group represented by formula (2), Y 2 is a carbon atom bonded to L, L is a single bond, and Z is an oxygen atom, Y 7 is CR Y , R Y being a group other than a pyrenyl group; and
when X 4 or X 5 is a carbon atom bonded to the group represented by formula (2), Y 7 is a carbon atom bonded to L, L is a single bond, and Z is an oxygen atom, Y 2 is CR Y , R Y being a group other than a pyrenyl group.
30. The compound according to claim 29 , wherein Z is an oxygen atom or a sulfur atom.
31. The compound according to claim 29 , wherein L is a single bond, a substituted or unsubstituted polyvalent aryl group having 6 to 12 ring carbon atoms, or a substituted or unsubstituted polyvalent heteroaryl group having 5 to ring atoms.
32. The compound according to claim 29 , wherein L is a single bond, or a substituted or unsubstituted phenylene group.
33. An organic electroluminescence device comprising:
an anode;
a cathode opposed to the anode; and
an organic compound layer provided between the anode and the cathode; wherein;
the organic compound layer comprises an emitting layer and an electron transporting layer provided between the emitting layer and the cathode; and
the electron transporting layer comprises a compound represented by the formula (1) as defined in claim 29 .
34. The organic electroluminescence device according to claim 33 , further comprising a blocking layer between the electron transporting layer and the emitting layer.
35. The organic electroluminescence device according to claim 33 , wherein the electron transporting layer is adjacent to the emitting layer.
36. The organic electroluminescence device according to claim 33 , wherein the electron transporting layer comprises at least one of an electron-donating dopant and an organic metal complex.
37. An electronic device comprising the organic electroluminescence device according to claim 33 .
38. A compound represented by the following formula (1-1),
where:
A2 and A3 each independently represent a structure represented by formula (1);
c 1 is an integer of 1 to 8;
c 2 is an integer of 1 to 8;
L 1 and L 2 each independently represent a single bond or a linking group;
the linking group is a substituted or unsubstituted, linear, branched or cyclic polyvalent aliphatic hydrocarbon group having 1 to 30 carbon atoms,
a substituted or unsubstituted polyvalent aryl group having 6 to 40 ring carbon atoms, or
a substituted or unsubstituted polyvalent heteroaryl group having 5 to 40 ring atoms;
the polyvalent heteroaryl group having 5 to 40 ring atoms for L 1 and L 2 comprises a substituted or unsubstituted polyvalent group derived from a phenanthroline ring represented by formula (1); when c is 2 to 8, plural L 1 and L 2 are the same or different;
Y 1 to Y 8 each independently represent a nitrogen atom, CR Y , or a carbon atom bonded to L 1 or L 2 ;
each R Y is each independently selected from the group consisting of
a hydrogen atom,
a halogen atom,
a cyano group,
a nitro group,
a substituted or unsubstituted hydroxyl group,
a substituted or unsubstituted carboxyl group,
a substituted or unsubstituted sulfonyl group,
a substituted or unsubstituted boryl group,
a substituted or unsubstituted phosphino group,
a substituted or unsubstituted mercapto group,
a substituted or unsubstituted acyl group,
a substituted or unsubstituted amino group,
a substituted or unsubstituted silyl group,
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms,
a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms,
a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms,
a substituted or unsubstituted aryl group having 6 to 40 carbon atoms, and
a substituted or unsubstituted heteroaryl group having 5 to 40 ring atoms;
the heteroaryl group having 5 to 40 ring atoms for R Y comprises a substituted or unsubstituted phenanthrolyl group derived from the phenanthroline ring represented by formula (1);
adjacent R Y are bonded to each other to form a cyclic structure, or are not bonded to each other
Z is an oxygen atom, a sulfur atom or a silicon atom; when b is 2 to 5, plural Z are the same or different; when Z is a silicon atom, R 9 and R 10 are bonded to the silicon atom, R 9 and R 10 each independently represent R X as defined in formula (1), and R 9 and R 10 are optionally bonded to the structure represented by formula (1); when Z is a silicon atom, R 9 and R 10 are not bonded to each other to form a cyclic structure;
b is an integer of 1 to 5;
where:
at least one of X 1 to X 8 is a carbon atom bonded to L 1 or L 2 of the formula (1-1);
X 1 to X 8 not bonded to L 1 or L 2 each independently represent CR X or a nitrogen atom;
each R X is each independently selected from the group consisting of:
a hydrogen atom,
a halogen atom,
a cyano group,
a nitro group,
a substituted or unsubstituted hydroxyl group,
a substituted or unsubstituted carboxyl group,
a substituted or unsubstituted sulfonyl group,
a substituted or unsubstituted boryl group,
a substituted or unsubstituted phosphino group,
a substituted or unsubstituted mercapto group,
a substituted or unsubstituted acyl group,
a substituted or unsubstituted amino group,
a substituted or unsubstituted silyl group,
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms,
a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms,
a substituted or unsubstituted aralkyl group having 6 to 30 carbon atoms,
a substituted or unsubstituted aryl group having 6 to 40 ring carbon atoms, and
a substituted or unsubstituted heteroaryl group having 5 to 40 ring atoms; and
among X 1 to X 8 , adjacent R X of CR X are bonded to each other to form a cyclic structure, or are not bonded to each other;
when X 1 or X 8 is a carbon atom bonded to the group represented by formula (2), b is 1, Z is an oxygen atom, Y 4 or Y 5 is a carbon atom bonded to L 1 or L 2 , and c is 2, the L 1 or L 2 closer to the phenanthroline ring represented by formula (1) is a divalent group other than an anthracene group;
when two of X 1 to X 8 are carbon atoms bonded to the group represented by formula (2), band c are 1, both of Z are sulfur atoms, Y 4 or Y 5 is a carbon atom bonded to L 1 or and L 1 or L 2 is a p-phenylene group, L 1 or L 2 is bonded to any one of X 1 , X 2 , X 4 , X 5 , X 7 and X 8 ,
when X 1 or X 8 is a carbon atom bonded to the group represented by formula (2), b and c are 1, Z is an oxygen atom or a sulfur atom, Y 3 is a carbon atom bonded to L 1 or L 2 , and L 1 or L 2 is a p-phenylene group, Y 4 is CR Y , R Y being a group other than a phenyl group;
when X 1 or X 8 is a carbon atom bonded to the group represented by formula (2), h and c are 1, Z is an oxygen atom or a sulfur atom, Y 6 is a carbon atom bonded to L 1 or L 2 , and L 1 or L 2 is a p-phenylene group, Y 5 is CR Y , R Y being a group other than a phenyl group;
when X 1 or X 8 is a carbon atom bonded to the group represented by formula (2), Z is a silicon atom, Y 3 is a carbon atom bonded to L 1 or L 2 , L 1 or L 2 is a single bond, and Y 6 is CR Y , R Y being the phenanthrolyl group of the heteroaryl group having 5 to 40 ring atoms in CR Y for Y 6 , R Y bonds to C at a position other than position 2 of the phenanthrolyl group;
when X 4 or X 5 is a carbon atom bonded to the group represented by formula (2), Y 2 is a carbon atom bonded to L 1 or L 2 , L 1 or L 2 is a single bond, and Z is an oxygen atom, Y 7 is CR Y , R Y being a group other than a pyrenyl group; and
when X 4 or X 5 is a carbon atom bonded to the group represented by formula (2), Y 7 is a carbon atom bonded to L 1 or L 2 , L 1 or L 2 is a single bond, and Z is an oxygen atom; Y 2 is CR Y , R Y being a group other a pyrenyl group.
39. The compound according to claim 38 , wherein Z is an oxygen atom or a sulfur atom.
40. The compound according to claim 38 , wherein the adjacent R Y are not bonded with each other.
41. The compound according to claim 38 , wherein L 1 and L 2 are single bonds, or substituted or unsubstituted phenylene.
42. The compound according to claim 38 , wherein L 1 and L 2 are single bonds.
43. An organic electroluminescence device comprising:
an anode;
a cathode opposed to the anode; and
an organic compound layer provided between the anode and the cathode; wherein;
the organic compound layer comprises an emitting layer and an electron transporting layer provided between the emitting layer and the cathode; and
the electron transporting layer comprises a compound represented by the formula (1-1) as defined in claim 38 .
44. The organic electroluminescence device according to claim 43 , further comprising a blocking layer between the electron transporting layer and the emitting layer.
45. The organic electroluminescence device according to claim 43 , wherein the electron transporting layer is adjacent to the emitting layer.
46. The organic electroluminescence device according to claim 43 , wherein the electron transporting layer comprises at least one of an electron-donating dopant and an organic metal complex.
47. An electronic device comprising the organic electroluminescence device according to claim 43 .
48. The compound according to claim 1 , wherein, when L is a substituted or unsubstituted polyvalent heteroaryl group having 5 to 40 ring atoms, the polyvalent heteroaryl group having 5 to 40 ring atoms is selected from a furyl group, a benzofuranyl group, an isobenzofuranyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a thienyl group, and a group based on a dioxane ring, a furan ring, a thiophene ring, a pyran ring, a dibenzofuran ring, a benzo[c]dibenzofuran ring, or a silafluorene ring.
49. The compound according to claim 1 , wherein, when L is a linking group, the linking group is selected from a substituted or unsubstituted, linear, branched or cyclic polyvalent aliphatic hydrocarbon group having 1 to 30 carbon atoms, and a substituted or unsubstituted polyvalent aryl group having 6 to 40 ring carbon atoms.
50. The compound according to claim 29 , wherein, when L is a substituted or unsubstituted polyvalent heteroaryl group having 5 to 40 ring atoms, the polyvalent heteroaryl group having 5 to 40 ring atoms is selected from a furyl group, a benzofuranyl group, an isobenzofuranyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a thienyl group, and a group based on a dioxane ring, a furan ring, a thiophene ring, a pyran ring, a dibenzofuran ring, a benzo[c]dibenzofuran ring, or a silafluorene ring.
51. The compound according to claim 29 , wherein, when L is a linking group, the linking group is selected from a substituted or unsubstituted, linear, branched or cyclic polyvalent aliphatic hydrocarbon group having 1 to 30 carbon atoms, and a substituted or unsubstituted polyvalent aryl group having 6 to 40 ring carbon atoms.