Heterocyclic compound and organic light-emitting device including the same
A heterocyclic compound represented by Formula 1: wherein, Ar 1 is a group represented by Formula 2, Ar 1 includes at least one cyano group, A 1 , A 2 , L 1 , a1, Ar 11 , Ar 12 , Ar 13 , m1, R 1 , R 10 , R 20 , R 30 , b 1 , b 10 , b 20 , and b 30 are the same as described in the present disclosure, and * and *′ each indicate a binding site to a neighboring atom.
1. A heterocyclic compound represented by Formula 1:
wherein, in Formula 1,
Ar 1 is a group represented by Formula 2,
Ar 1 comprises at least one cyano group,
A 1 and A 2 are each independently a C 5 -C 30 carbocyclic group or a C 1 -C 30 heterocyclic group,
each L 1 is independently an unsubstituted or substituted C 5 -C 30 carbocyclic group or an unsubstituted or substituted C 1 -C 30 heterocyclic group, and
a1 is 0, 1, 2, or 3,
wherein, when a1 is 2 or more, two or more L 1 (s) are identical to or different from each other, wherein, in Formula 2,
Ar 11 is a group represented by Formula 4, Ar 12 is a group represented by Formula 5, and Ar 13 is a group represented by Formula 6, and
m1 is 0, 1, 2, or 3,
and
wherein, in Formulae 1, 2, 4, 5, and 6,
R 1 , R 10 , R 20 , R 30 , R 40 , R 50 , and R 60 are each independently hydrogen, deuterium, —F, —Cl, —Br, —I, —SF 5 , a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C 1 -C 60 alkyl group, a substituted or unsubstituted C 2 -C 60 alkenyl group, a substituted or unsubstituted C 2 -C 60 alkynyl group, a substituted or unsubstituted C 1 -C 60 alkoxy group, a substituted or unsubstituted C 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 60 aryl group, a substituted or unsubstituted C 6 -C 60 aryloxy group, a substituted or unsubstituted C 6 -C 60 arylthio group, a substituted or unsubstituted C 1 -C 60 heteroaryl group, a substituted or unsubstituted C 1 -C 60 heteroaryloxy group, a substituted or unsubstituted C 1 -C 60 heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, —N(Q 1 )(Q 2 ), —Si(Q 3 )(Q 4 )(Q 5 ), —B(Q 6 )(Q 7 ), or —P(═O)(Q 8 )(Q 9 ),
b1 is an integer from 1 to 5,
wherein, when b1 is 2 or more, two or more R 1 (s) are identical to or different from each other,
b10 is an integer from 1 to 8,
wherein, when b10 is 2 or more, two or more R 10 (s) are identical to or different from each other,
b20 and b30 are each independently an integer from 1 to 4,
wherein, when b20 is 2 or more, two or more R 20 (s) are identical to or different from each other, and when b30 is 2 or more, two or more R 30 (s) are identical to or different from each other,
b40, b50, and b60 are each independently an integer from 1 to 4,
wherein, when b40 is 2 or more, two or more R 40 (s) are identical to or different from each other, when b50 is 2 or more, two or more R 50 (s) are identical to or different from each other, and when b60 is 2 or more, two or more R 60 (s) are identical to or different from each other,
* and *′ each indicate a binding site to a neighboring atom, and
at least one substituent of the substituted C 1 -C 60 alkyl group, the substituted C 2 -C 60 alkenyl group, the substituted C 2 -C 60 alkynyl group, the substituted C 1 -C 60 alkoxy group, the substituted C 3 -C 10 cycloalkyl group, the substituted C 1 -C 10 heterocycloalkyl group, the substituted C 3 -C 10 cycloalkenyl group, the substituted C 1 -C 10 heterocycloalkenyl group, the substituted C 6 -C 60 aryl group, the substituted C 6 -C 60 aryloxy group, the substituted C 6 -C 60 arylthio group, the substituted C 1 -C 60 heteroaryl group, the substituted C 1 -C 60 heteroaryloxy group, the substituted C 1 -C 60 heteroarylthio group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituted monovalent non-aromatic condensed heteropolycyclic group is:
deuterium, —F, —Cl, —Br, —I, —CD 3 , —CD 2 H, —CDH 2 , —CF 3 , —CF 2 H, —CFH 2 , a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a C 1 -C 60 alkyl group, a C 2 -C 60 alkenyl group, a C 2 -C 60 alkynyl group, or a C 1 -C 60 alkoxy group;
a C 1 -C 60 alkyl group, a C 2 -C 60 alkenyl group, a C 2 -C 60 alkynyl group, or a C 1 -C 60 alkoxy group, each substituted with at least one of deuterium, —F, —Cl, —Br, —I, —CD 3 , —CD 2 H, —CDH 2 , —CF 3 , —CF 2 H, —CFH 2 , a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a C 1 -C 60 heteroaryloxy group, a C 1 -C 60 heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, —Si(Q 11 )(Q 12 )(Q 13 ), —N(Q 14 )(Q 15 ), or —B(Q 16 )(Q 17 );
a C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a C 1 -C 60 heteroaryloxy group, a C 1 -C 60 heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed heteropolycyclic group;
a C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a C 1 -C 60 heteroaryloxy group, a C 1 -C 60 heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed heteropolycyclic group, each substituted with at least one of deuterium, —F, —Cl, —Br, —I, —CD 3 , —CD 2 H, —CDH 2 , —CF 3 , —CF 2 H, —CFH 2 , a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a C 1 -C 60 alkyl group, a C 2 -C 60 alkenyl group, a C 2 -C 60 alkynyl group, a C 1 -C 60 alkoxy group, a C 3 -C 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a C 1 -C 60 heteroaryloxy group, a C 1 -C 60 heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, —Si(Q 21 )(Q 22 )(Q 23 ), —N(Q 24 )(Q 25 ), or —B(Q 26 )(Q 27 ); or
—Si(Q 31 )(Q 32 )(Q 33 ), —N(Q 34 )(Q 35 ), and —B(Q 36 )(Q 37 ),
wherein Q 1 to Q 7 , Q 11 to Q 17 , Q 21 to Q 27 , and Q 31 to Q 37 are each independently hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid or a salt thereof, a sulfonic acid or a salt thereof, a phosphoric acid or a salt thereof, a substituted or unsubstituted C 1 -C 60 alkyl group, a substituted or unsubstituted C 2 -C 60 alkenyl group, a substituted or unsubstituted C 2 -C 60 alkynyl group, a substituted or unsubstituted C 1 -C 60 alkoxy group, a substituted or unsubstituted C 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 60 aryl group, a substituted or unsubstituted C 6 -C 60 aryloxy group, a substituted or unsubstituted C 6 -C 60 arylthio group, a substituted or unsubstituted C 1 -C 60 heteroaryl group, a substituted or unsubstituted C 1 -C 60 heteroaryloxy group, a substituted or unsubstituted C 1 -C 60 heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, or a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group.
2. The heterocyclic compound of claim 1 , wherein
Ar 1 is represented by one of Formulae 2-1 to 2-25:
wherein, in Formulae 2-1 to 2-25,
R 41 to R 44 are each independently the same as described in connection with R 40 in claim 1 ,
R 51 to R 54 are each independently the same as described in connection with R 50 in claim 1 ,
R 61 to R 68 are each independently the same as described in connection with R 60 in claim 1 ,
at least one of R 41 to R 44 , R 51 to R 54 , and R 61 to R 68 is a cyano group, and
* and *′ each indicate a binding site to a neighboring atom.
3. The heterocyclic compound of claim 1 , wherein
Ar 1 comprises 1 to 4 cyano groups.
4. The heterocyclic compound of claim 1 , wherein
m1 is 0, 1, or 2.
5. The heterocyclic compound of claim 1 , wherein
A 1 and A 2 are each independently a benzene group, a naphthalene group, an anthracene group, a phenanthrene group, a triphenylene group, a pyrene group, a 1,2,3,4-tetrahydronaphthalene group, a fluorene group, a carbazole group, a benzofuran group, a dibenzofuran group, a benzothiophene group, a dibenzothiophene group, a benzosilole group, a dibenzosilole group, an azafluorene group, an azacarbazole group, an azadibenzofuran group, an azadibenzothiophene group, an azadibenzosilole group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a quinoline group, an isoquinoline group, a quinoxaline group, a quinazoline group, or a phenanthroline group.
6. The heterocyclic compound of claim 1 , wherein
L 1 is:
a phenylene group, a pentalenylene group, an indenylene group, a naphthylene group, an azulenylene group, a heptalenylene group, an acenaphthylene group, a fluorenylene group, a phenalenylene group, a phenanthrenylene group, an anthracenylene group, a fluoranthenylene group, a triphenylenylene group, a pyrenylene group, a chrysenylenylene group, a naphthacenylene group, a picenylene group, a perylenylene group, or a pentacenylene group; and
a phenylene group, a pentalenylene group, an indenylene group, a naphthylene group, an azulenylene group, a heptalenylene group, an acenaphthylene group, a fluorenylene group, a phenalenylene group, a phenanthrenylene group, an anthracenylene group, a fluoranthenylene group, a triphenylenylene group, a pyrenylene group, a chrysenylenylene group, a naphthacenylene group, a picenylene group, a perylenylene group, or a pentacenylene group, each substituted with at least one of deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a C 1 -C 60 alkyl group, a C 2 -C 60 alkenyl group, a C 2 -C 60 alkynyl group, a alkoxy group, a C 3 -C 10 cycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a C 1 -C 60 heteroaryloxy group, a C 1 -C 60 heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic condensed heteropolycyclic group.
7. The heterocyclic compound of claim 1 , wherein
R 1 is a group represented by one of Formulae 9-1 to 9-19 or a group represented by one of Formulae 10-1 to 10-194:
wherein, in Formulae 9-1 to 9-19 and 10-1 to 10-194, * indicates a binding site to a neighboring atom, Ph is a phenyl group, and TMS is a trimethylsilyl group.
8. The heterocyclic compound of claim 1 , wherein
R 10 , R 20 , R 30 , R 40 , R 50 , and R 60 are each independently:
hydrogen, deuterium, a cyano group, a C 1 -C 20 alkyl group, or a C 1 -C 20 alkoxy group;
a C 1 -C 20 alkyl group or a C 1 -C 20 alkoxy group, each substituted with at least one of deuterium, a cyano group, a phenyl group, a biphenyl group, a terphenyl group, or a naphthyl group;
a cyclopentyl group, a cyclohexyl group, a cyclopentenyl group, a cyclohexenyl group, a cycloheptenyl group, a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a carbazolyl group, a dibenzofuranyl group, or a dibenzothiophenyl group; and
a cyclopentyl group, a cyclohexyl group, a cyclopentenyl group, a cyclohexenyl group, a cycloheptenyl group, a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a carbazolyl group, a dibenzofuranyl group, or a dibenzothiophenyl group, each substituted with at least one of deuterium, a cyano group, a C 1 -C 20 alkyl group, a C 1 -C 20 alkoxy group, a phenyl group, a biphenyl group, a terphenyl group, or a naphthyl group.
9. The heterocyclic compound of claim 1 , wherein
R 10 , R 20 , and R 30 are each independently hydrogen or a cyano group.
10. The heterocyclic compound of claim 1 , wherein
the heterocyclic compound represented by Formula 1 is a compound represented by Formula 10:
wherein, in Formula 10,
Ar 1 , L 1 , a1, R 1 , and b1 are each the same as described in claim 1 ,
X 21 is C(R 21 ) or N, X 22 is C(R 22 ) or N, X 23 is C(R 23 ) or N, and X 24 is C(R 24 ) or N,
X 31 is C(R 31 ) or N, X 32 is C(R 32 ) or N, X 33 is C(R 33 ) or N, and X 34 is C(R 34 ) or N,
R 11 to R 18 are each independently the same as described in connection with R 10 in claim 1 ,
R 21 to R 24 are each independently the same as described in connection with R 20 in claim 1 , and
R 31 to R 34 are each independently the same as described in connection with R 30 in claim 1 .
11. The heterocyclic compound of claim 1 , wherein
the heterocyclic compound represented by Formula 1 satisfies Equation 1:
E ( T 1)< E ( S 1)<2× E ( T 1) Equation 1
wherein, in Equation 1,
E(T1) is a lowest excitation triplet energy level of the heterocyclic compound and E(S1) is a lowest excitation singlet energy level of the heterocyclic compound.
12. The heterocyclic compound of claim 1 , wherein
the heterocyclic compound represented by Formula 1 satisfies Equation 2:
[2× E ( T 1)]− E ( S 1)<1electron volt Equation 2
wherein, in Equation 2,
E(T1) is a lowest excitation triplet energy level of the heterocyclic compound and E(S1) is a lowest excitation singlet energy level of the heterocyclic compound.
13. The heterocyclic compound of claim 1 , wherein
the heterocyclic compound represented by Formula 1 is represented by one of Compounds 1 to 560:
14. An organic light-emitting device comprising:
a first electrode;
a second electrode; and
an organic layer located between the first electrode and the second electrode and comprising an emission layer,
wherein the organic layer comprises at least one heterocyclic compound represented by Formula 1 of claim 1 .
15. The organic light-emitting device of claim 14 , wherein
the emission layer comprises the at least one heterocyclic compound represented by Formula 1.
16. The organic light-emitting device of claim 15 , wherein
the emission layer further comprises a dopant, and
the at least one of the heterocyclic compound represented by Formula 1 is a host.
17. The organic light-emitting device of claim 16 , wherein
the dopant is a fluorescent dopant.
18. The organic light-emitting device of claim 15 , wherein
a percentage of triplet-triplet fusion (TTF) components among all luminescent components emitted from the emission layer is equal to or greater than 30%.
19. The organic light-emitting device of claim 15 , wherein
the emission layer emits blue light having a maximum luminescence wavelength of 410 nanometers to 490 nanometers.
20. The organic light-emitting device of claim 14 , wherein
the first electrode is an anode, and the second electrode is a cathode,
the organic layer comprises a hole transport region located between the first electrode and the emission layer and an electron transport region located between the emission layer and the second electrode,
the hole transport region comprises at least one of a hole injection layer, a hole transport layer, or an electron blocking layer,
the electron transport region comprises at least one of a hole blocking layer, an electron transport layer, or an electron injection layer, and
at least one of the hole transport region and the electron transport region comprises the at least one heterocyclic compound represented by Formula 1.