Organic electroluminescent element and electronic device
An organic electroluminescence device includes an anode, a cathode, a first emitting layer, and a second emitting layer disposed between the first emitting layer and the cathode, the first emitting layer containing a first host material in a form of a first compound represented by a formula (101) below, the second emitting layer containing a second host material in a form of a second compound represented by a formula (2) below, the first emitting layer and the second emitting layer being in direct contact with each other.
1. An organic electroluminescence device comprising:
an anode;
a cathode; a first emitting layer disposed between the anode and the cathode; and a second emitting layer disposed between the first emitting layer and the cathode, wherein
the first emitting layer comprises a first host material in a form of a first compound represented by a formula (101) below,
the second emitting layer comprises a second host material in a form of a second compound represented by a formula (2) below, and
the first emitting layer and the second emitting layer are in direct contact with each other,
where, in the formula (101): R 101 to R 110 , and R 111 to R 120 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a group represented by —Si(R 901 )(R 902 )(R 903 ), a group represented by —O—(R 904 ), a group represented by —S—(R 905 ), a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a group represented by —C(═O)R 801 , a group represented by —COOR 802 , a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms;
one of R 101 to R 110 represents a bonding position to L 101 , and one of R 111 to R 120 represents a bonding position to L 101 ;
L 101 is a substituted or unsubstituted arylene group selected from the group consisting of groups represented by formulae (TEMP-42) to (TEMP-52), and (TEMP-63) to (TEMP-68) below,
where, in the formulae (TEMP-42) to (TEMP-52), and (TEMP-63) to (TEMP-68), Q 1 to Q 10 are each independently a hydrogen atom or a substituent, Q 1 to Q 10 as the substituent are each independently an unsubstituted phenyl group, an unsubstituted 1-naphthyl group or an unsubstituted 2-naphthyl group, and * represents a bonding position;
mx is 1, 2, or 3; and
when two or more L 101 are present, the two or more L 101 are mutually the same or different,
where, in the formula (2): R 201 to R 208 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a group represented by —Si(R 901 )(R 902 )(R 903 ), a group represented by —O—(R 904 ), a group represented by —S—(R 905 ), a group represented by —N(R 906 )(R 907 ), a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a group represented by —C(═O)R 801 , a group represented by —COOR 802 , a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms;
L 201 and L 202 are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms;
Ar 201 and Ar 202 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms,
in the first compound represented by the formula (1) and the second compound represented by the formula (2): R 901 , R 902 , R 903 , R 904 , R 905 , R 906 , R 907 , R 801 , and R 802 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms;
when a plurality of R 901 are present, the plurality of R 901 are mutually the same or different;
when a plurality of R 902 are present, the plurality of R 902 are mutually the same or different;
when a plurality of R 903 are present, the plurality of R 903 are mutually the same or different;
when a plurality of R 904 are present, the plurality of R 904 are mutually the same or different;
when a plurality of R 905 are present, the plurality of R 905 are mutually the same or different;
when a plurality of R 906 are present, the plurality of R 906 are mutually the same or different; and
when a plurality of R 907 are present, the plurality of R 907 are mutually the same or different;
when a plurality of R 801 are present, the plurality of R 801 are mutually the same or different; and
when a plurality of R 802 are present, the plurality of R 802 are mutually the same or different.
2. The organic electroluminescence device according to claim 1 , wherein
the first compound is represented by a formula (1010) below,
where, in the formula (1010): R 101 , R 102 , R 104 to R 110 , and R 111 to R 119 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a group represented by —Si(R 901 )(R 902 )(R 903 ), a group represented by —O—(R 904 ), a group represented by —S—(R 905 ), a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a group represented by —C(═O)R 801 , a group represented by —COOR 802 , a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms;
L 101 is a substituted or unsubstituted arylene group selected from the group consisting of groups represented by the formulae (TEMP-42) to (TEMP-52), and (TEMP-63) to (TEMP-68);
mx is 1, 2, or 3; and
when two or more L 101 are present, the two or more L 101 are mutually the same or different.
3. The organic electroluminescence device according to claim 1 , wherein
R 101 to R 110 not being the bonding position to L 101 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms and
R 111 to R 120 not being the bonding position to L 101 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.
4. The organic electroluminescence device according to claim 1 , wherein
R 101 to R 110 not being the bonding position to L 101 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms and
R 111 to R 120 not being the bonding position to L 101 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms.
5. The organic electroluminescence device according to claim 1 , wherein
R 101 to R 110 not being the bonding position to L 101 are each a hydrogen atom and
R 111 to R 120 not being the bonding position to L 101 are each a hydrogen atom.
6. The organic electroluminescence device according to claim 1 , wherein
the first compound is one of compounds represented by formulae (PY-1) to (PY-12) below,
7. The organic electroluminescence device according to claim 6 , wherein
the first compound is one of compounds represented by the formulae (PY-1) to (PY-6).
8. The organic electroluminescence device according to claim 6 , wherein
the first compound is the compound represented by the formula (PY-2).
9. The organic electroluminescence device according to claim 6 , wherein
the first compound is the compound represented by the formula (PY-8).
10. The organic electroluminescence device according to claim 6 , wherein
the first compound is the compound represented by the formula (PY-10).
11. The organic electroluminescence device according to claim 1 , wherein
R 201 to R 208 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a group represented by —Si(R 901 )(R 902 )(R 903 ), a group represented by —O—(R 904 ), a group represented by —S—(R 905 ), a group represented by —N(R 906 )(R 907 ), a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a group represented by —C(═O)R 801 , a group represented by —COOR 802 , a halogen atom, a cyano group, or a nitro group.
12. The organic electroluminescence device according to claim 1 , wherein
L 201 and L 202 are each independently a single bond, or a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms; and
Ar 201 and Ar 202 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms.
13. The organic electroluminescence device according to claim 1 , wherein
the second compound represented by the formula (2) is a compound represented by a formula (201), a formula (202), a formula (203), a formula (204), a formula (205), a formula (206), a formula (207), a formula (208), or a formula (209) below,
where, in the formulae (201) to (209):
L 201 and Ar 201 represent the same as L 201 and Ar 201 in the formula (2); and
R 201 to R 208 each independently represent the same as R 201 to R 208 of the formula (2).
14. The organic electroluminescence device according to claim 1 , wherein
in the second compound represented by the formula (2), R 201 to R 208 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, or a group represented by —Si(R 901 )(R 902 )(R 903 ).
15. The organic electroluminescence device according to claim 1 , wherein
R 201 to R 208 in the second compound represented by the formula (2) are each a hydrogen atom.
16. The organic electroluminescence device according to claim 1 , wherein
the organic electroluminescence device emits, when being driven, light whose main peak wavelength ranges from 430 nm to 480 nm.
17. The organic electroluminescence device according to claim 1 , wherein
the second emitting layer further comprises a fluorescent fourth compound, and
the fourth compound is a compound whose main peak wavelength ranges from 430 nm to 480 nm.
18. The organic electroluminescence device according to claim 1 , wherein
the first emitting layer further comprises a fluorescent third compound, and
the third compound is a compound whose main peak wavelength ranges from 430 nm to 480 nm.
19. The organic electroluminescence device according to claim 1 , further comprising a hole transporting layer between the anode and the first emitting layer.
20. The organic electroluminescence device according to claim 1 , further comprising an electron transporting layer between the cathode and the second emitting layer.
21. An electronic device comprising the organic electroluminescence device according to claim 1 .
22. An organic electroluminescence device comprising:
an anode;
a cathode; a first emitting layer disposed between the anode and the cathode; and a second emitting layer disposed between the first emitting layer and the cathode, wherein
the first emitting layer comprises a first host material in a form of a first compound represented by a formula (101) below,
the second emitting layer comprises a second host material in a form of a second compound represented by a formula (2) below, and
the first emitting layer and the second emitting layer are in direct contact with each other,
where, in the formula (101): R 101 to R 110 , and R 111 to R 120 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a group represented by —Si(R 901 )(R 902 )(R 903 ), a group represented by —O—(R 904 ), a group represented by —S—(R 905 ), a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a group represented by —C(═O)R 801 , a group represented by —COOR 802 , a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms;
one of R 101 to R 110 represents a bonding position to L 101 , and one of R 111 to R 120 represents a bonding position to L 101 ;
L 101 is a divalent group derived by removing one hydrogen atom from an aryl ring of a substituted or unsubstituted phenyl group, a substituted or unsubstituted 1-naphthyl group or a substituted or unsubstituted 2-naphthyl group;
mx is 1, 2, or 3; and
when two or more L 101 are present, the two or more L 101 are mutually the same or different,
the group represented by -(L 101 ) mx - is a group represented by any one of formulae (113) to (122) below,
where * in the formulae (113) to (122) represents a bonding position,
where, in the formula (2): R 201 to R 208 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a group represented by —Si(R 901 )(R 902 )(R 903 ), a group represented by —O—(R 904 ), a group represented by —S—(R 905 ), a group represented by —N(R 906 )(R 907 ), a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a group represented by —C(═O)R 801 , a group represented by —COOR 802 , a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms:
L 201 and L 202 are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms;
Ar 201 and Ar 202 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms,
in the first compound represented by the formula (1) and the second compound represented by the formula (2): R 901 , R 902 , R 903 , R 904 , R 905 , R 906 , R 907 , R 801 , and R 802 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms;
when a plurality of R 901 are present, the plurality of R 901 are mutually the same or different;
when a plurality of R 902 are present, the plurality of R 902 are mutually the same or different;
when a plurality of R 903 are present, the plurality of R 903 are mutually the same or different;
when a plurality of R 904 are present, the plurality of R 904 are mutually the same or different;
when a plurality of R 905 are present, the plurality of R 905 are mutually the same or different;
when a plurality of R 906 are present, the plurality of R 906 are mutually the same or different; and
when a plurality of R 907 are present, the plurality of R 907 are mutually the same or different;
when a plurality of R 801 are present, the plurality of R 801 are mutually the same or different; and
when a plurality of R 802 are present, the plurality of R 802 are mutually the same or different.
23. The organic electroluminescence device according to claim 22 , wherein
R 101 to R 110 not being the bonding position to L 101 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms and
R 111 to R 120 not being the bonding position to L 101 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms.
24. The organic electroluminescence device according to claim 22 , wherein
R 101 to R 110 not being the bonding position to L 101 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms and
R 111 to R 120 not being the bonding position to L 101 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms.
25. The organic electroluminescence device according to claim 22 , wherein
R 101 to R 110 not being the bonding position to L 101 are each a hydrogen atom and
R 111 to R 120 not being the bonding position to L 101 are each a hydrogen atom.
26. The organic electroluminescence device according to claim 22 , wherein
the organic electroluminescence device emits, when being driven, light whose main peak wavelength ranges from 430 nm to 480 nm.
27. The organic electroluminescence device according to claim 22 , wherein
the second emitting layer further comprises a fluorescent fourth compound, and
the fourth compound is a compound whose main peak wavelength ranges from 430 nm to 480 nm.
28. The organic electroluminescence device according to claim 22 , wherein
the first emitting layer further comprises a fluorescent third compound, and
the third compound is a compound whose main peak wavelength ranges from 430 nm to 480 nm.
29. An organic electroluminescence device comprising:
an anode;
a cathode; a first emitting layer disposed between the anode and the cathode; and a second emitting layer disposed between the first emitting layer and the cathode, wherein
the first emitting layer comprises a first host material in a form of a first compound represented by a formula (101) below,
the second emitting layer comprises a second host material in a form of a second compound represented by a formula (2) below, and
the first emitting layer and the second emitting layer are in direct contact with each other,
where, in the formula (101): R 101 to R 110 , and R 111 to R 120 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a group represented by —Si(R 901 )(R 902 )(R 903 ), a group represented by —O—(R 904 ), a group represented by —S—(R 905 ), a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a group represented by —C(═O)R 801 , a group represented by —COOR 802 , a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms;
one of R 101 to R 110 represents a bonding position to L 101 , and one of R 111 to R 120 represents a bonding position to L 101 ;
L 101 is a divalent group derived by removing one hydrogen atom from an aryl ring of a substituted or unsubstituted phenyl group, a substituted or unsubstituted 1-naphthyl group or a substituted or unsubstituted 2-naphthyl group;
mx is 1, 2, or 3; and
when two or more L 101 are present, the two or more L 101 are mutually the same or different,
where, in the formula (2): R 201 to R 208 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a group represented by —Si(R 901 )(R 902 )(R 903 ), a group represented by —O—(R 904 ), a group represented by —S—(R 905 ), a group represented by —N(R 906 )(R 907 ), a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a group represented by —C(═O)R 801 , a group represented by —COOR 802 , a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms:
L 201 and L 202 are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms;
Ar 201 and Ar 202 are each independently a phenyl group, a naphthyl group, a phenanthryl group, a biphenyl group, a terphenyl group, a diphenylfluorenyl group, a dimethylfluorenyl group, a benzodiphenylfluorenyl group, a benzodimethylfluorenyl group, a dibenzofuranyl group, a dibenzothienyl group, a naphthobenzofuranyl group, or a naphthobenzothienyl group; in the first compound represented by the formula (1) and the second compound represented by the formula (2): R 901 , R 902 , R 903 , R 904 , R 905 , R 906 , R 907 , R 801 , and R 802 are each independently hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms;
when a plurality of R 901 are present, the plurality of R 901 are mutually the same or different;
when a plurality of R 902 are present, the plurality of R 902 are mutually the same or different;
when a plurality of R 903 are present, the plurality of R 903 are mutually the same or different;
when a plurality of R 904 are present, the plurality of R 904 are mutually the same or different;
when a plurality of R 905 are present, the plurality of R 905 are mutually the same or different;
when a plurality of R 906 are present, the plurality of R 906 are mutually the same or different; and
when a plurality of R 907 are present, the plurality of R 907 are mutually the same or different;
when a plurality of R 801 are present, the plurality of R 801 are mutually the same or different; and
when a plurality of R 802 are present, the plurality of R 802 are mutually the same or different.
30. An organic electroluminescence device comprising:
an anode;
a cathode; a first emitting layer disposed between the anode and the cathode; and a second emitting layer disposed between the first emitting layer and the cathode, wherein
the first emitting layer comprises a first host material in a form of a first compound represented by a formula (101) below,
the second emitting layer comprises a second host material in a form of a second compound represented by a formula (2) below, and
the first emitting layer and the second emitting layer are in direct contact with each other,
where, in the formula (101): R 101 to R 110 , and R 111 to R 120 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a group represented by —Si(R 901 )(R 902 )(R 903 ), a group represented by —O—(R 904 ), a group represented by —S—(R 905 ), a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a group represented by —C(═O)R 801 , a group represented by —COOR 802 , a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms;
one of R 101 to R 110 represents a bonding position to L 101 , and one of R 111 to R 120 represents a bonding position to L 101 ;
L 101 is a divalent group derived by removing one hydrogen atom from an aryl ring of a substituted or unsubstituted phenyl group, a substituted or unsubstituted 1-naphthyl group or a substituted or unsubstituted 2-naphthyl group;
mx is 1, 2, or 3; and
when two or more L 101 are present, the two or more L 101 are mutually the same or different,
where, in the formula (2): R 201 to R 208 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted haloalkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 50 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a group represented by —Si(R 901 )(R 902 )(R 903 ), a group represented by —O—(R 904 ), a group represented by —S—(R 905 ), a group represented by —N(R 906 )(R 907 ), a substituted or unsubstituted aralkyl group having 7 to 50 carbon atoms, a group represented by —C(═O)R 801 , a group represented by —COOR 802 , a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms;
L 201 and L 202 are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 50 ring atoms;
Ar 201 and Ar 202 are each independently a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms;
in the first compound and the second compound, the groups specified to be “substituted or unsubstituted” are each an “unsubstituted” group;
in the first compound represented by the formula (1) and the second compound represented by the formula (2): R 901 , R 902 , R 903 , R 904 , R 905 , R 906 , R 907 , R 801 and R 802 are each independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 ring atoms;
when a plurality of R 901 are present, the plurality of R 901 are mutually the same or different;
when a plurality of R 902 are present, the plurality of R 902 are mutually the same or different;
when a plurality of R 903 are present, the plurality of R 903 are mutually the same or different;
when a plurality of R 904 are present, the plurality of R 904 are mutually the same or different;
when a plurality of R 905 are present, the plurality of R 905 are mutually the same or different;
when a plurality of R 906 are present, the plurality of R 906 are mutually the same or different; and
when a plurality of R 907 are present, the plurality of R 907 are mutually the same or different;
when a plurality of R 801 are present, the plurality of R 801 are mutually the same or different; and
when a plurality of R 802 are present, the plurality of R 802 are mutually the same or different.