USRE49343EActiveUtility
Organic electroluminescence device
Est. expiryJun 1, 2032(~5.9 yrs left)· nominal 20-yr term from priority
C09B 57/00C09K 2211/1029C09K 2211/1007C09K 2211/1044C09K 11/06H01L 51/5012H01L 51/0067C07D 209/86H01L 51/0072H01L 51/0061H10K 85/654H10K 50/11H10K 85/6572H10K 85/636H10K 2101/20
67
PatentIndex Score
0
Cited by
66
References
54
Claims
Abstract
An organic electroluminescence device includes: a cathode; an anode; and an organic thin-film layer disposed between the cathode and the anode, the organic thin-film layer having one or more layers including an emitting layer, in which the emitting layer includes a first material represented by the following formula (1) and a second material in a form of a fluorescent dopant material.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1. An organic electroluminescence device comprising:
a cathode; an anode; and an organic thin-film layer disposed between the cathode and the anode, the organic thin-film layer having one or more layers comprising an emitting layer, the emitting layer comprising a first material represented by a formula (1) below and a second material in a form of a fluorescent dopant material,
where, in the formula (1):
A is a group having a partial structure selected from formulae (a-1) to (a-7) below;
B is a group having a partial structure selected from formulae (b-1) to (b-6) below;
L represents a single bond or a linking group;
the linking group is:
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a group derived from a group formed by mutually bonding two to five of the substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and/or the substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms,
the mutually bonded groups being the same or different;
a is an integer in a range from 1 to 5 representing the number of a substituent(s) of A directly bonded to L;
a plurality of A being mutually the same or different when a is 2 or more,
b is an integer in a range from 1 to 5 representing the number of a substituent(s) of B directly bonded to L,
a plurality of B being mutually the same or different when b is 2 or more;
where
R is: a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, and
when a plurality of R are present, the plurality of R being mutually the same or different.
2. The organic electroluminescence device according to claim 1 , wherein B in the formula (1) is represented by one of formulae (2), (3), (4), (5) and (6) below,
where: R 1 and R 9 each independently represent:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms;
a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms;
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms;
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms;
a substituted or unsubstituted arylamino group having 6 to 60 ring carbon atoms;
a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms; or
a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms, at least one of the combinations of R 1 and R 2 , R 2 and R 3 , R 3 and R 4 , R 5 and R 6 , R 6 and R 7 , R 7 and R 8 , R 8 and R 9 and R 9 and R 1 optionally forming a saturated or unsaturated ring structure;
L 1 is a linking group selected from formulae (21) to (27) below,
n1 represents an integer in a range from 1 to 3, and, when n1 is 2 or 3, plural L 1 are mutually the same or different, and
X 1 is a linking group selected from formulae (41) to (45) below,
where, in the formulae (23) to (27), R 101 is the same as R 1 to R 9 in the formula (2),
with a proviso that, in the formula (2), one of R 1 to R 9 or one of R 101 is a single bond to be bonded to L, and
when a plurality of R 101 are present, the plurality of R 101 are mutually the same or different,
where, in the formulae (43) to (45), R x represents:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, and
when a plurality of R x are present, the plurality of R x are mutually the same or different,
where, in the above formula (3), R 21 to R 24 are the same as R 1 to R 9 in the formula (2), one of the combinations of R 21 and R 22 , R 22 and R 23 , and R 23 and R 24 optionally forming a saturated or unsaturated cyclic structure; and
X 1 is a linking group selected from the formulae (41) to (45), with a proviso that, in the above formula (3), one of R 21 to R 24 and R x is a single bond to be bonded to L,
where, in the formula (4):
R 25 to R 30 represent the same as R 1 to R 9 in the formula (2), one of the combinations of R 25 and R 26 , R 27 and R 28 , R 28 and R 29 , and R 29 and R 30 optionally forming a saturated or unsaturated cyclic structure; and
X 1 is a linking group selected from the formulae (41) to (45), with a proviso that, in the above formula (4), one of R 25 to R 30 and R x is a single bond to be bonded to L,
where, in the formula (5):
R 31 to R 38 are the same as R 1 to R 9 in the formula (2), one of the combinations of R 31 and R 32 , R 32 and R 33 , R 33 and R 34 , and R 35 and R 36 , R 36 and R 37 , and R 37 and R 38 optionally forming a saturated or unsaturated cyclic structure; and
X 1 is a linking group selected from the formulae (41) to (45), with a proviso that, in the above formula (5), one of R 31 to R 38 and R x is a single bond to be bonded to L,
(Z b ) r —Ar b — (6)
where, in the formula (6):
Ar b represents a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
Zb represents:
a substituted or unsubstituted tertiary alkyl group having 4 to 30 carbon atoms;
a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms;
a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms;
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms;
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted alkylamino group having 2 to 60 carbon atoms;
a substituted or unsubstituted arylamino group having 6 to 60 ring carbon atoms;
a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms; or
a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms,
r is an integer in a range from 1 to 5 representing the number of a substituent(s) of Z b directly bonded to A b , and
a plurality of Z b being mutually the same or different when r is 2 or more.
3. The organic electroluminescence device according to claim 2 , wherein
the formula (2) is represented by a formula (2a) below,
where, R 10 is the same as R 1 to R 9 in the formula (2),
m1 and m3 represent an integer in a range from 0 to 4, m2 represents an integer in a range from 0 to 2,
plural R 10 being mutually the same or different, and
X 1 is a linking group selected from the formulae (41) to (45), plural X 1 being mutually the same or different, with a proviso that, in the formula (2a), one of R 10 and R x in the formulae (43) to (45) is a single bond to be bonded to L.
4. The organic electroluminescence device according to claim 2 , wherein
at least one of R 31 to R 38 in the formula (5) is represented by a formula (51) below,
where: R 39 represents the same as R 1 to R 9 in the formula (2),
r represents an integer in a range from 0 to 3 and S represents an integer in a range from 0 to 4,
plural R 39 being mutually the same or different;
X 1 is a linking group selected from the formulae (41) to (45),
L 61 represents a single bond or a linking group, and
the linking group is:
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a group derived from a group formed by mutually bonding two to five of the substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and/or the substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms,
the mutually bonded groups being mutually the same or different.
5. The organic electroluminescence device according to claim 1 , wherein
A in the formula (1) is represented by one of formulae (8), (9), (10), (11), (12), (13) and (14) below,
where, in the formula (8): two to four of Y 1 are a nitrogen atom, one of Y 1 is a carbon atom bonded to L and the rest of Y 1 is CR y ;
when the formula (8) includes a plurality of R y , the plurality of R y independently represent: a hydrogen atom;
a fluorine atom;
a cyano group;
a nitro group;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms;
a substituted or unsubstituted alkylcarbonyl group having 1 to 30 carbon atoms;
a substituted or unsubstituted arylcarbonyl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted alkylsulfinyl group having 1 to 30 carbon atoms;
a substituted or unsubstituted arylsulfinyl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted alkylphosphinyl group having 2 to 60 carbon atoms;
a substituted or unsubstituted arylphosphinyl group having 6 to 60 ring carbon atoms;
a substituted or unsubstituted alkylsulfonyl group having 1 to 30 carbon atoms;
a substituted or unsubstituted arylsulfonyl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted alkylsilyl group having 3 to 60 carbon atoms;
a substituted or unsubstituted arylsilyl group having 8 to 60 ring carbon atoms;
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms; or
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms; and
adjacent two Y 1 optionally form a saturated or unsaturated cyclic structure when the adjacent two Y 1 are CR y ,
where, in the formula (9), Y 2 is the same as the other Y 1 in the formula (8),
where, in the formulae (10), (11) and (12):
Y 3 represents the same as Y 1 in the formula (8); and
X 3 is a linking group selected from formulae (41) to (45) below,
where, in the above formulae (43) to (45):
R x independently represents:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, and
when a plurality of R x are present, the plurality of R x are mutually the same or different,
where, in the formula (13):
one of R 41 to R 48 is a single bond to be bonded to L;
the rest of R 41 to R 48 represent the same as R y in the formula (8);
L 4 is a linking group selected from formulae (131) to (136) below; and
p represents an integer in a range from 1 to 3, a plurality of L 4 being mutually the same or different when p is 2 or 3,
where, in the above formulae (133) to (136):
each of R 301 independently represents:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, and
when a plurality of R 301 are present, the plurality of R 301 are mutually the same or different,
—Ar a —(Z a ) q (14)
where, in the formula (14):
Ar a represents:
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms, or
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
Zr a represents:
a fluorine atom;
a cyano group;
a nitro group;
a substituted or unsubstituted alkylcarbonyl group having 1 to 20 carbon atoms;
a substituted or unsubstituted arylcarbonyl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted alkylsulfinyl group having 1 to 20 carbon atoms;
a substituted or unsubstituted arylsulfinyl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted alkylphosphinyl group having 2 to 60 carbon atoms;
a substituted or unsubstituted arylphosphinyl group having 6 to 60 ring carbon atoms;
a substituted or unsubstituted alkylsulfonyl group having 1 to 30 carbon atoms; or
a substituted or unsubstituted arylsulfonyl group having 6 to 30 ring carbon atoms;
q is an integer in a range from 1 to 5 representing the number of a substituent(s) of Z a directly bonded to Ar a ; and
a plurality of Z a are mutually the same or different when q is 2 or more.
6. The organic electroluminescence device according to claim 1 , wherein
the second material in the form of the fluorescent dopant material is represented by a formula (20) below,
where, in the formula (20):
Ar 0 is a substituted or unsubstituted divalent fused aromatic hydrocarbon group having 10 to 50 ring carbon atoms; and
Ar 1 to Ar 4 each independently represent:
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
a substituted or unsubstituted alkyl group having 6 to 30 carbon atoms; or
a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms.
7. The organic electroluminescence device according to claim 1 , wherein
the organic electroluminescence device exhibits a delayed fluorescence ratio larger than 37.5%.
8. The organic electroluminescence device according to claim 1 , wherein
the organic electroluminescence device exhibits a residual strength ratio larger than 36.0% after an elapse of 1 μs after voltage removal in a transitional EL measurement.
9. The organic electroluminescence device according to claim 1 , wherein
a half bandwidth of a photoluminescence spectrum of the first material is 50 nm or more.
10. An organic electroluminescence device comprising:
a cathode; an anode; and an organic thin-film layer disposed between the cathode and the anode, the organic thin-film layer having one or more layers comprising an emitting layer, the emitting layer comprising a first material represented by a formula (1) below and a second material in a form of a dopant material, with a proviso that the dopant material is not a heavy metal complex,
where, in the formula (1):
A is a group having a partial structure selected from formulae (a-1) to (a-7) below;
B is a group having a partial structure selected from formulae (b-1) to (b-6) below;
L represents a single bond or a linking group;
the linking group is:
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a group derived from a group formed by mutually bonding two to five of the substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and/or the substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, the mutually bonded groups being mutually the same or different;
a is an integer in a range from 1 to 5 representing the number of a substituent(s) of A directly bonded to L;
a plurality of A being mutually the same or different when a is 2 or more; and
b is an integer in a range from 1 to 5 representing the number of a substituent(s) of B directly bonded to L,
a plurality of B being mutually the same or different when b is 2 or more,
where, in the formulae (b-1) to (b-6):
R is:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms; and
when a plurality of R are present, the plurality of R are mutually the same or different.
11. An organic electroluminescence device, comprising:
a cathode; an anode; and an organic thin-film layer disposed between the cathode and the anode, the organic thin-film layer having one or more layers comprising an emitting layer, the emitting layer comprising a first material of formula (1e) below and a second material in a form of a fluorescent dopant material,
where, in the formula (1e):
L is a substituted or unsubstituted phenyl group;
A is a group of formula (a-2)
B is independently a group of formula (5):
where, in the formula (5):
R 31 to R 38 are independently
a hydrogen atom,
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms,
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms,
a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms,
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms,
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms,
a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms, or
a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms; and
X 1 is a linking group of formula (41), (42), (43), or (45), with a proviso that, in the above formula (5), one of R 31 to R 38 or R x in each B is a single bond directly bonded to L,
where, in the formulae (43) to (45), R x is independently:
a hydrogen atom,
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms;
wherein, in at least one of two B that are groups of the formula (5) in the formula (1e), one of the combinations of R 31 and R 32 , R 32 and R 33 , R 33 and R 34 , R 35 and R 36 , R 36 and R 37 , and R 37 and R 38 forms a saturated or unsaturated cyclic structure,
wherein the first material represented by the formula (1e) does not comprise a structure of formula (51) in a molecule:
where, in the formula (51):
R 39 is independently:
a hydrogen atom,
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms,
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms,
a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms,
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms,
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms,
a substituted or unsubstituted arylamino group having 6 to 60 ring carbon atoms,
a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms, or
a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms;
r is an integer in a range from 0 to 3;
S is an integer in a range from 0 to 4;
X 1 is a linking group of formula (44) below:
where, in the formula (44), R x is independently:
a hydrogen atom,
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms;
L 61 is a single bond or a linking group selected from the group consisting of:
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, and
a group derived from a group formed by mutually bonding two to five of the substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and/or the substituted or unsubstituted heterocyclic group haying 5 to 30 ring atoms, the mutually bonded groups being mutually the same or different; and
wherein the first material does not comprise a substituted or unsubstituted arylamino group having 6 to 30 ring carbon atoms in a molecule;
wherein the first material does not include an arylamino group in a foil of —N(Rw) 2 in a molecule, Rw being a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
wherein the first material does not include a group of formula (b-2) in a molecule,
in which R is a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
wherein the first material does not include a group of formula (2b),
in a molecule, where, in the formula (2b),
R 1 to R 9 are independently:
a hydrogen atom,
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms,
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms,
a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms,
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms,
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms,
a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms, or
a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms, at least one of the combinations of R 1 and R 2 , R 2 and R 3 , R 3 and R 4 , R 5 and R 6 , R 6 and R 7 , R 7 and R 8 , R 8 and R 9 and R 9 and R 1 optionally forming a saturated or unsaturated ring structure:
L 1 is independently a linking group selected from formulae (21) to (27) below,
where, in the formulae (23) to (27), R 101 is independently any group as defined for R 1 to R 9 in the formula (2b), with a proviso that, in the formula (2b), one of R 1 to R 9 or one of R 101 is a single bond to be bonded to L,
n1 is an integer in a range from 1 to 3, and, when n1 is 2 or 3, plural L 1 are mutually the same or different,
wherein the first material does not include an azacarbazolyl group; and
wherein L of the first material represented by the formula (1e) does not include an anthryl group;
wherein the first material of formula (1e) does not have a structure of formula (101),
where, in the formula (101),
A 1 and A 2 are independently:
a hydrogen atom,
a halogen atom,
a cyano group,
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms,
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms,
a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms,
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 60 carbon atoms, or
a substituted or unsubstituted arylsilyl group having 8 to 30 ring carbon atoms,
Y 11 to Y 14 and Y 23 to Y 26 in the formula (101) are independently C(R) or a nitrogen atom, Y 15 to Y 18 are independently a nitrogen atom, C(R) or a carbon atom bonded with at least one of Y 19 to Y 22 , and Y 19 to Y 22 are independently C(R), a nitrogen atom or a carbon atom bonded with at least one of Y 15 to Y 18 , with a proviso that R is independently a hydrogen atom or a substituent, the substituent for R being the same as the substituents for A 1 and A 2 ,
L 1 and L 2 in the formula (101) are independently a single bond, a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted divalent heterocyclic group having 5 to 30 ring atoms or a group formed by mutually bonding the substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 ring carbon atoms and/or the substituted or unsubstituted divalent heterocyclic group having 5 to 30 ring atoms;
wherein, when X 1 in the formula (5) is of the formula (43), R x is a single bond directly bonded to L; and
wherein the first material does not comprise a partial structure of formula (a-1) in a molecule
12. The device of claim 11, wherein the emitting layer does not comprise a heavy metal complex.
13. The device of claim 11, wherein, in B,
at least one of R 31 to R 38 in the formula (5) has a structure of formula (51) below,
where, in the formula (51), R 39 is independently any group as defined for R 1 to R 9 in the formula (2b),
r is an integer in a range from 0 to 3, and
S is an integer in a range from 0 to 4;
X 1 is a linking group represented by the formula (41), (42), (43), or (45),
L 61 is a single bond or a linking group, the linking group being:
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a group derived from a group formed by mutually bonding two to five of the substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and/or the substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms,
the mutually bonded groups being mutually the same or different.
14. The device of claim 11, wherein the second material in the form of the fluorescent dopant material has a structure of formula (20) below,
where, in the formula (20):
Ar 0 is a substituted or unsubstituted divalent fused aromatic hydrocarbon group having 10 to 50 ring carbon atoms; and
Ar 1 to Ar 4 are independently:
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
a substituted or unsubstituted alkyl group having 6 to 30 carbon atoms; or
a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms.
15. The device of claim 11, exhibiting a delayed fluorescence ratio larger than 37.5%.
16. The device of claim 11, exhibiting a residual strength ratio larger than 36.0% after an elapse of 1 μs after voltage removal in a transitional EL measurement.
17. The device of claim 11, wherein a half bandwidth of a photoluminescence spectrum of the first material is 50 nm or more.
18. The device of claim 11, wherein X 1 is a linking group of the formula (43), and R x in the formula (43) is a single bond bonded with L.
19. The device of claim 11, wherein at least one of R 31 to R 38 has a structure of formula (51),
where, in the formula (51),
R 39 is independently any group as defined for R 1 to R 9 in the formula (2b),
r is an integer ranging from 0 to 3,
S is an integer ranging from 0 to 4,
X 1 is a linking group of the formula (43), and
L 61 is a single bond or a linking group, the linking group being:
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a group derived from a group formed by mutually bonding two to five of the substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and/or the substituted or unsubstituted heterocyclic croup having 5 to 30 ring atoms, the mutually bonded groups being the same or different.
20. The device of claim 19, wherein a plurality of X 1 are linking groups of the formula (43), and at least one of R x in the formula (43) is a single bond bonded with L.
21. The device of claim 11, wherein the fluorescent dopant material is selected from the group consisting of a bisarylamino naphthalene derivative, an aryl-substituted naphthalene derivative, a bisarylamino anthracene derivative, an aryl-substituted anthracene derivative, a bisarylamino pyrene derivative, an aryl-substituted pyrene derivative, a bisarylamino chrysene derivative, an aryl-substituted chrysene derivative, a bisarylamino fluoranthene derivative, an aryl-substituted fluoranthene derivative, an indenoperylene derivative, a pyrromethene boron complex compound, a compound having a pyrromethene skeleton or a metal complex thereof, a diketopyrrolopyrrole derivative, and a perylene derivative.
22. The device of claim 11, wherein the first material does not comprise a structure of formula (51A) in a molecule,
where, in the formula (51A),
R 39 is independently any group as defined for R 1 to R 9 in the formula (2b),
r is an integer in a range from 0 to 3, and S is an integer in a range from 0 to 4;
X 1 is a linking group of the formula (43),
L 61 is a single bond or a linking group, the linking group being:
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a group derived from a group formed by mutually bonding two to five of the substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and/or the substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, the mutually bonded groups being mutually the same or different.
23. The device of claim 11, wherein the first material does not comprise a partial structure of formula (b-5) in a molecule,
where, in the partial structure of the formula (b-5), R is independently:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms.
24. The device of claim 23, wherein the first material does not comprise a structure of formula (51C) in a molecule,
where, in the formula (51C),
R 39 is independently:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms;
a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms;
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms;
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms;
a substituted or unsubstituted arylamino group having 6 to 60 ring carbon atoms;
a substituted or unsubstituted alkylthio croup having 1 to 30 carbon atoms; or
a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms;
r is an integer in a range from 0 to 3, and
S is an integer in a range from 0 to 4;
X 1 is a linking group of the formula (43):
where, in the formula (43), R x is independently:
a hydrogen atom,
a substituted or unsubstituted aryl group having 6 to 30 carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms;
L 61 is a single bond or a linking group, the linking group being:
a substituted or unsubstituted aryl group haying 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a group derived from a group formed by mutually bonding two to five of the substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and/or the substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, the mutually bonded groups being mutually the same or different.
25. The device of claim 11, wherein the first material does not comprise a structure of formula (51D) in a molecule,
where, in the formula (51D):
R 39 is independently a substituted or unsubstituted arylamino group having 6 to 60 ring carbon atoms,
r is an integer in a range from 0 to 3 and S is an integer in a range from 0 to 4, with a proviso that at least one of r and S is 1 or more;
X 1 is a linking group of the formula (43),
L 61 is a single bond or a linking group, the linking group being:
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a group derived from a group formed by mutually bonding two to five of the substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and/or the substituted or unsubstituted heterocyclic croup having 5 to 30 rim atoms, the mutually bonded groups being mutually the same or different.
26. The device of claim 11, wherein the first material does not comprise in a molecule (i) and (ii):
(i) a structure of the formula (2),
where, in the formula (2),
R 1 to R 9 are independently:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms;
a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms;
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms;
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms;
a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms; or
a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms,
at least one of the combinations of R 1 and R 2 , R 2 and R 3 , R 3 and R 4 , R 5 and R 6 , R 6 and R 7 , R 7 and R 8 , R 8 and R 9 and R 9 and R 1 optionally forming a saturated or unsaturated ring structure;
L 1 is a linking group of formula (23),
where, in the formula (23), R 101 is any group as defined for R 1 to R 9 in the formula (2), with a proviso that, in the formula (2), one of R 1 to R 9 or R 101 is a single bond to be bonded to L,
n1 is 1, and
X 1 is a linking group of formula (44),
wherein, in the formula (44), R x is independently:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, and
(ii) a partial structure of formula (b-5),
where, in the formula (b-5), R is independently:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms.
27. The device of claim 24, wherein the first material does not comprise in a molecule (i) and (ii):
(i) a structure of the formula (2),
where, in the formula (2),
R 1 to R 9 are independently:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms;
a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms;
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms;
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms:
a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms;
a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms; or
a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms,
at least one of the combinations of R 1 and R 2 , R 2 and R 3 , R 3 and R 4 , R 5 and R 6 , R 6 and R 7 , R 7 and R 8 , R 8 and R 9 and R 9 and R 1 optionally forming a saturated or unsaturated ring structure;
L 1 is a linking group of formula (23),
where, in the formula (23), R 101 is any group as defined for R 1 to R 9 in the formula (2), with a proviso that, in the formula (2), one of R 1 to R 9 or R 101 is a single bond to be bonded to L,
n1 is 1, and
X 1 is a linking group of formula (44) below,
where, in the formula (44), R x is independently:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms; and
(ii) a partial structure of formula (b-5),
where, in the formula (b-5), R is independently:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms.
28. The device of claim 24, wherein the first material does not comprise in a molecule a structure of the formula (2),
where, in the formula (2),
R 1 to R 9 are independently:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms;
a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms;
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms;
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms:
a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms;
a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms; or
a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms, at least one of the combinations of R 1 and R 2 , R 2 and R 3 , R 3 and R 4 , R 5 and R 6 , R 6 and R 7 , R 7 and R 8 , R 8 and R 9 and R 9 and R 1 optionally forming a saturated or unsaturated ring structure;
L 1 is a linking group of formula (23),
where, in the formula (23), R 101 is any group as defined for R 1 to R 9 in the formula (2), with a proviso that, in the formula (2), one of R 1 to R 9 or R 101 is a single bond to be bonded to L,
n1 is 1, and
X 1 is a linking group of formula (44),
wherein, in the formulae (44), R x is independently:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms.
29. The device of claim 24, wherein the first material does not comprise in a molecule (i) and (ii):
(i) a structure of the formula (2),
where, in the formula (2),
R 1 to R 9 are independently:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms;
a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms,
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms;
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms;
a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms; or
a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms,
at least one of the combinations of R 1 and R 2 , R 2 and R 3 , R 3 and R 4 , R 5 and R 6 , R 66 and R 7 , R 7 and R 8 , R 8 and R 9 and R 9 and R 1 optionally forming a saturated or unsaturated ring structure;
L 1 is a linking group of formula (23),
where, in the formula (23), R 101 is any group as defined for R 1 to R 9 in the formula (2), with a proviso that, in the formula (2), one of R 1 to R 9 or R 101 is a single bond to be bonded to L,
n1 is 1, and
X 1 is a linking group of formula (44),
wherein, in the formulae (44), R x is independently:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms; and
(ii) a partial structure of formula (b-5),
where, in the formula (b-5), R is independently:
a hydrogen atom;
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms.
30. The device of claim 14, wherein the emitting layer does not comprise a heavy metal complex.
31. The device of claim 15, wherein the emitting layer does not comprise a heavy metal complex.
32. The device of claim 16, wherein the emitting layer does not comprise a heavy metal complex.
33. The device of claim 17, wherein the emitting layer does not comprise a heavy metal complex.
34. The device of claim 26, wherein the emitting layer does not comprise a heavy metal complex.
35. The device of claim 27, wherein the emitting layer does not comprise a heavy metal complex.
36. The device of claim 28, wherein the emitting layer does not comprise a heavy metal complex.
37. The device of claim 29, wherein the emitting layer does not comprise a heavy metal complex.
38. The device of claim 11, wherein a difference ΔST(H) between a singlet energy EgS(H) of the first material and an energy gap Eg 77K (H) of the first material at 77[K] satisfies a formula (2),
ΔST(H)=EgS(H)−Eg 77K (H)<0.3 [eV] (2).
39. The device of claim 38, wherein the emitting layer does not comprise a heavy metal complex.
40. The device of claim 11, wherein the first material is a thermally activated delayed fluorescent compound.
41. The device of claim 40, wherein the emitting layer does not comprise a heavy metal complex.
42. The device of claim 11, wherein the emitting layer is not phosphorescent.
43. The device of claim 11, wherein X 1 , in the group of the formula (5), is the linking group of the formula (41).
44. The device of claim 11, wherein the X 1 , in the group of the formula (5), is the linking group of the formula (42).
45. The device of claim 11, wherein the X 1 , in the group of the formula (5), is the linking group of the formula (43).
46. The device of claim 11, wherein the X 1 , in the group of the formula (5), is the linking group of the formula (45).
47. The device of claim 11, wherein, in two B in the formula (1e), one of the combinations of R 31 and R 32 , R 32 and R 33 , R 33 and R 34 , and R 35 and R 36 , R 36 and R 37 , and R 37 and R 38 forms a saturated or unsaturated cyclic structure.
48. The device of claim 11, wherein, in at least one of the two B in the formula (1e), R 31 and R 32 form a saturated or unsaturated cyclic structure.
49. The device of claim 11, wherein, in at least one of the two B in the formula (1e), R 32 and R 33 form a saturated or unsaturated cyclic structure.
50. The device of claim 11, wherein, in at least one of the two B in the formula (1e), R 33 and R 34 form a saturated or unsaturated cyclic structure.
51. The device of claim 11, wherein, in at least one of the two B in the formula (1e), R 35 and R 36 form a saturated or unsaturated cyclic structure.
52. The device of claim 11, wherein, in at least one of the two B in the formula (1e), R 36 and R 37 form a saturated or unsaturated cyclic structure.
53. The device of claim 11, wherein, in at least one of the two B in the formula (1e), R 37 and R 38 form a saturated or unsaturated cyclic structure.
54. An organic electroluminescence device, comprising:
a cathode; an anode; and an organic thin-film layer disposed between the cathode and the anode, the organic thin-film layer having one or more layers comprising an emitting layer, the emitting layer comprising a first material of formula (1e) below and a second material in a form of a fluorescent dopant material,
where, in the formula (1e):
L is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
A is a group of formula (a-2)
B is independently a group of formula (5):
where, in the formula (5):
R 31 to R 38 are independently
a hydrogen atom,
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms,
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms,
a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms,
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms,
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms,
a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms, or
a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms,
one of the combinations of R 31 and R 32 , R 32 and R 33 , R 33 and R 34 , and R 35 and R 36 , R 36 and R 37 , and R 37 and R 38 optionally forming a saturated or unsaturated cyclic structure; and
X 1 is a linking group of formula (45), with a proviso that, in the above formula (5), one of R 31 to R 38 or R x in each B is a single bond directly bonded to L,
where R x is independently:
a hydrogen atom,
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms;
wherein the first material represented by the formula (1e) does not comprise a structure of formula (51) in a molecule:
where, in the formula (51):
R 39 is independently:
a hydrogen atom,
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms,
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms,
a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms,
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms,
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms,
a substituted or unsubstituted arylamino group having 6 to 60 ring carbon atoms,
a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms, or
a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms;
r is an integer in a range from 0 to 3;
S is an integer in a range from 0 to 4;
X 1 is a linking group of formula (44) below:
where, in the formula (44), R x is independently:
a hydrogen atom,
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms;
L 61 is a single bond or a linking group selected from the group consisting of
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, and
a group derived from a group formed by mutually bonding two to five of the substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and/or the substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, the mutually bonded groups being mutually the same or different; and
wherein the first material does not comprise a substituted or unsubstituted arylamino group having 6 to 30 ring carbon atoms in a molecule;
wherein the first material does not include an arylamino group in a form of —N(Rw) 2 in a molecule, Rw being a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms;
wherein the first material does not include a group of formula (b-2) in a molecule,
in which R is a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms;
wherein the first material does not include a group of formula (2b),
in a molecule, where, in the formula (2b),
R 1 to R 9 are independently:
a hydrogen atom,
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms,
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms,
a substituted or unsubstituted arylsilyl group having 6 to 60 ring carbon atoms,
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms,
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted alkylamino group having 2 to 30 carbon atoms,
a substituted or unsubstituted alkylthio group having 1 to 30 carbon atoms, or
a substituted or unsubstituted arylthio group having 6 to 30 ring carbon atoms, at least one of the combinations of R 1 and R 2 , R 2 and R 3 , R 3 and R 4 , R 5 and R 6 , R 6 and R 7 , R 7 and R 8 , R 8 and R 9 and R 9 and R 1 optionally forming a saturated or unsaturated ring structure;
L 1 is independently a linking group selected from formulae (21) to (27) below,
where, in the formulae (23) to (27), R 101 is independently any group as defined for R 1 to R 9 in the formula (2b), with a proviso that, in the formula (2b), one of R 1 to R 9 or one of R 101 is a single bond to be bonded to L,
n1 is an integer in a range from 1 to 3, and, when n1 is 2 or 3, plural L 1 are mutually the same or different,
wherein the first material does not include an azacarbazolyl group; and
wherein L of the first material represented by the formula (1e) does not include an anthryl group;
wherein the first material of formula (1e) does not have a structure of formula (101),
where, in the formula (101),
A 1 and A 2 are independently:
a hydrogen atom,
a halogen atom,
a cyano group,
a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms,
a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms,
a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms,
a substituted or unsubstituted aralkyl group having 7 to 30 carbon atoms,
a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms,
a substituted or unsubstituted alkylsilyl group having 3 to 60 carbon atoms, or
a substituted or unsubstituted arylsilyl group having 8 to 30 ring carbon atoms,
Y 11 to Y 14 and Y 23 to Y 26 in the formula (101) are independently C(R) or a nitrogen atom, Y 15 to Y 18 are independently a nitrogen atom, C(R) or a carbon atom bonded with at least one of Y 19 to Y 22 , and Y 19 to Y 22 are independently C(R), a nitrogen atom or a carbon atom bonded with at least one of Y 15 to Y 18 , with a proviso that R is independently a hydrogen atom or a substituent, the substituent for R being the same as the substituents for A 1 and A 2 ,
L 1 and L 2 in the formula (101) are independently a single bond, a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted divalent heterocyclic group having 5 to 30 ring atoms or a group formed by mutually bonding the substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 ring carbon atoms and/or the substituted or unsubstituted divalent heterocyclic group having 5 to 30 ring atoms;
wherein, when X 1 in the formula (5) is of the formula (43), R x is a single bond directly bonded to L; and
wherein the first material does not comprise a partial structure of formula (a-1) in a moleculeCited by (0)
No later patents cite this yet.
References (0)
No backward citations on record.