Arylamine-based compound and organic light emitting diode comprising the same
An arylamine-based compound is represented by Formula 1 below. The arylamine-based compound is included in an organic light emitting diode.
1. An arylamine-based compound represented by Formula 1 below:
wherein in Formula 1,
ring A is selected from: benzene, naphthalene, anthracene, fluorene, spiro-fluorene, phenanthrene, triphenylene, chrysene, naphthacene, perylene, pyrrole, imidazole, pyrazole, pyridine, pyrazine, pyrimidine, pyridazine, isoindole, indole, quinoline, isoquinoline, benzoquinoline, naphthyridine, quinoxaline, quinazoline, cinnoline, carbazole, phenanthridine, acridine, phenanthroline, phenazine, benzoxazole, benzimidazole, furan, benzofuran, thiophene, benzothiophene, thiazole, isothiazole, benzothiazole, isoxazole, oxazole, triazole, tetrazole, oxadiazole, triazine, dibenzofuran, dibenzothiophene, or benzocarbazole;
(X) n is selected from Formulae 3a to 3n below:
wherein in Formulae 3a to 3n, * is a binding site to the nitrogen atom of a pyrrole ring in Formula 1 and *′ is a binding site to the other nitrogen atom;
each of Ar 1 and Ar 2 is independently selected from: a substituted or unsubstituted C 6 -C 30 aryl group or a substituted or unsubstituted C 2 -C 30 heteroaryl group;
each of R 1 , and R 2 is independently selected from: a hydrogen atom, a deuterium atom, a halogen atom, 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 substituted or unsubstituted C 1 -C 30 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 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 2 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 2 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 30 aryl group, or a substituted or unsubstituted C 2 -C 30 heteroaryl group;
each of R 3 is independently a hydrogen atom, a deuterium atom, a halogen atom, 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 substituted or unsubstituted C 1 -C 30 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 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 2 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 2 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 30 aryl group, or an unsubstituted C 2 -C 30 heteroaryl group; and
a is an integer of 0 to 4.
2. The arylamine-based compound of claim 1 , wherein the ring A is selected from: benzene, naphthylene, fluorene, phenanthrene, chrysene, perylene, pyridine, pyrazine, pyrimidine, quinoline, isoquinoline, benzoquinoline, carbazole, phenanthroline, dibenzofuran, or dibenzothiophene.
3. The arylamine-based compound of claim 1 , wherein the ring A is any one of Formulae 2a to 2m below:
wherein in Formulae 2a to 2m,
corresponds to carbon number 4 of a pyrrole ring in Formula 1 and *′ corresponds to carbon number 5 of a pyrrole ring in Formula 1.
4. The arylamine-based compound of claim 1 , wherein each of Ar 1 and Ar 2 is independently selected from:
i) a phenyl group, a naphthyl group, an anthryl group, a fluorenyl group, a benzofuranyl group, a benzothienyl group, a benzosilolyl group, a dibenzofuranyl group, a dibenzothienyl group, or a dibenzosilolyl group; or
ii) a phenyl group, a naphthyl group, an anthryl group, a fluorenyl group, a benzofuranyl group, a benzothienyl group, a benzosilolyl group, a dibenzofuranyl group, a dibenzothienyl group, or a dibenzosilolyl group, each substituted with at least one of:
a deuterium atom; a halogen atom; 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 10 alkyl group; —Si(Q 3 )(Q 4 )(Q 5 ) wherein each of Q 3 to Q 5 is independently a C 1 -C 10 alkyl group; a C 1 -C 10 alkyl group substituted with at least one of: a deuterium atom, a halogen atom, 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, or —Si(Q 3 )(Q 4 )(Q 5 ) wherein each of Q 3 to Q 5 is independently a C 1 -C 10 alkyl group; a C 6 -C 16 aryl group; a C 2 -C 16 heteroaryl group; or a C 6 -C 16 aryl group or a C 2 -C 16 heteroaryl group, each substituted with a deuterium atom, a halogen atom, 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 C 1 -C 60 alkoxy group, a C 6 -C 16 aryl group, a C 2 -C 16 heteroaryl group, or Si(Q 3 )(Q 4 )(Q 5 ) wherein each of Q 3 to Q 5 is independently a C 1 -C 10 alkyl group.
5. The arylamine-based compound of claim 1 , wherein
each of Ar 1 and Ar 2 is independently selected from:
i) a phenyl group, a naphthyl group, a fluorenyl group, a dibenzothienyl group, or a dibenzosilolyl group; or
ii) a phenyl group, a naphthyl group, a fluorenyl group, a dibenzothienyl group, or a dibenzosilolyl group, each substituted with at least one of: a deuterium atom; a fluorine atom; a cyano group; a nitro group; a methyl group; an ethyl group; an n-propyl group; an iso-propyl group; an n-butyl group; a sec-butyl group; an iso-butyl group; a tert-butyl group; —Si(Q 3 )(Q 4 )(Q 5 ) wherein each of Q 3 to Q 5 is independently a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, an iso-butyl group, or a tert-butyl group; a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, an iso-butyl group, or a tert-butyl group, each substituted with at least one of: a deuterium atom, a fluorine atom, a cyano group, a nitro group, or —Si(Q 3 )(Q 4 )(Q 5 ) wherein each of Q 3 to Q 5 is independently a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, an iso-butyl group, or a tert-butyl group; a phenyl group; a naphthyl group; an anthracenyl group; a fluorenyl group; a benzothienyl group; a dibenzothienyl group; a pyridyl group; a pyrimidyl group; a triazinyl group; a carbazolyl group; or a phenyl group, a naphthyl group, an anthracenyl group, a fluorenyl group, a benzothienyl group, a dibenzothienyl group, a pyridyl group, a pyrimidyl group, a triazinyl group, or a carbazolyl group, each substituted with a deuterium atom, a fluorine atom, a cyano group, a nitro group, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, an iso-butyl group, a tert-butyl group, a phenyl group, a naphthyl group, an anthracenyl group, a fluorenyl group, a benzothienyl group, a dibenzothienyl group, a pyridyl group, a pyrimidyl group, a triazinyl group, a carbazolyl group, or —Si(Q 3 )(Q 4 )(Q 5 ) wherein each of Q 3 to Q 5 is independently a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, an iso-butyl group, or a tert-butyl group.
6. The arylamine-based compound of claim 1 , wherein each of Ar 1 and Ar 2 is independently selected from:
i) a phenyl group, a naphthyl group, a fluorenyl group, a dibenzothienyl group, or a dibenzosilolyl group; or
ii) a phenyl group, a naphthyl group, a fluorenyl group, a dibenzothienyl group, or a dibenzosilolyl group, each substituted with at least one of: a deuterium atom; a fluorine atom; a cyano group; a nitro group; —Si(CH 3 ) 3 ; a methyl group; a methyl group substituted with at least one of: a deuterium atom, a fluorine atom, a cyano group, a nitro group or —Si(CH 3 ) 3 ; a phenyl group; a fluorenyl group; a dibenzothienyl group; a pyridyl group; or a phenyl group, a fluorenyl group, a dibenzothienyl group, or a pyridyl group, each substituted with at least one of: a deuterium atom, a fluorine atom, a cyano group, a nitro group, —Si(CH 3 ) 3 , a methyl group, or a phenyl group.
7. The arylamine-based compound of claim 1 , wherein each of Ar 1 and Ar 2 is independently any one of Formulae 4a to 4s:
wherein in Formulae 4a to 4s,
is a binding site to the nitrogen atom.
8. The arylamine-based compound of claim 1 , wherein each of R 1 , R 2 and each of R 3 is independently selected from:
a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, an iso-butyl group, a tert-butyl group, a phenyl group, a naphthyl group, an anthracenyl group, or a fluorenyl group.
9. An organic light emitting diode comprising: a first electrode;
a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, and comprising an emission layer;
wherein the organic layer comprises a hole transporting layer between the first electrode and the emission layer; wherein the hole transporting layer between the first electrode and the emission layer comprises a first hole transporting layer and a second hole transporting layer, wherein the second hole transporting layer is between the first hole transporting layer and the emission layer, and the second hole transporting layer comprises the arylamine-based compound of Formula 1.
10. The organic light emitting diode of claim 9 , wherein
the second hole transporting layer comprises a first arylamine-based compound of Formula 1 and the first hole transporting layer comprises a second arylamine-based compound of Formula 1, and
the first arylamine-based compound of Formula 1 is the same as or different from the second arylamine-based compound of Formula 1.
11. The arylamine-based compound of claim 1 , wherein the arylamine-based compound of Formula 1 is a compound selected from the group consisting of Compounds 1 to 82 below:
12. An organic light emitting diode comprising:
a first electrode;
a second electrode facing the first electrode; and
an organic layer between the first electrode and the second electrode, and comprising an emission layer,
wherein the organic layer comprises an arylamine-based compound represented by Formula 1 below,
Formula 1
wherein in Formula 1,
ring A is selected from: a C 6 -C 20 aromatic ring or a C 2 -C 20 heteroaromatic ring;
each X is independently selected from: a substituted or unsubstituted C 6 -C 30 arylene group, or a substituted or unsubstituted C 2 -C 30 heteroarylene group, and two or more Xs are optionally connected to each other to form a substituted or unsubstituted saturated ring or a substituted or unsubstituted unsaturated ring;
n is an integer of 1 to 5;
each of Ar 1 and Ar 2 is independently selected from: a substituted or unsubstituted C 6 -C 30 aryl group or a substituted or unsubstituted C 2 -C 30 heteroaryl group;
each of R 1 , R 2 and each of R 3 is independently selected from: a hydrogen atom, a deuterium atom, a halogen atom, 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 substituted or unsubstituted C 1 -C 30 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 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 2 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 2 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 30 aryl group, or a substituted or unsubstituted C 2 -C 30 heteroaryl group; and
a is an integer of 0 to 4,
wherein the organic layer comprises:
a hole transporting region between the first electrode and the emission layer, the hole transporting region further comprising at least one of: a hole injecting layer, a hole transporting layer, a functional layer having both hole injecting and hole transporting capabilities, a buffer layer, or an electron blocking layer, and
an electron transporting region between the emission layer and the second electrode, the electron transporting region further comprising at least one of: a hole blocking layer, an electron transporting layer, or an electron injecting layer,
wherein the hole transporting layer comprises a first hole transporting layer and a second hole transporting layer,
wherein the second hole transporting layer is between the first hole transporting layer and the emission layer, and
the second hole transporting layer comprises the arylamine-based compound of Formula 1.
13. The organic light emitting diode of claim 12 , wherein
the second hole transporting layer comprises a first arylamine-based compound of Formula 1 and the first hole transporting layer comprises a second arylamine-based compound of Formula 1, and
the first arylamine-based compound of Formula 1 is the same as or different from the second arylamine-based compound of Formula 1.
14. An arylamine-based compound represented by Formula 1 below:
Formula 1
wherein in Formula 1,
ring A is selected from: benzene, naphthalene, anthracene, fluorene, spiro-fluorene, phenanthrene, triphenylene, chrysene, naphthacene, perylene, pyrrole, imidazole, pyrazole, pyridine, pyrazine, pyrimidine, pyridazine, isoindole, indole, quinoline, isoquinoline, benzoquinoline, naphthyridine, quinoxaline, quinazoline, cinnoline, carbazole, phenanthridine, acridine, phenanthroline, phenazine, benzoxazole, benzimidazole, furan, benzofuran, thiophene, benzothiophene, thiazole, isothiazole, benzothiazole, isoxazole, oxazole, triazole, tetrazole, oxadiazole, triazine, dibenzofuran, dibenzothiophene, or benzocarbazole;
each X is independently selected from: a substituted or unsubstituted C 6 -C 30 arylene group or a substituted or unsubstituted C 2 -C 30 heteroarylene group, and two or more Xs are optionally connected to each other to form a substituted or unsubstituted saturated ring or a substituted or unsubstituted unsaturated ring;
n is an integer of 1 to 5;
each of Ar 1 and Ar 2 is independently any one of Formulae 4a to 4s:
wherein in Formulae 4a to 4s,
is a binding site to the nitrogen atom;
each of Ar 1 and Ar 2 is independently selected from: a substituted or unsubstituted C 6 -C 30 aryl group or a substituted or unsubstituted C 2 -C 30 heteroaryl group;
each of R 1 , and R 2 is independently selected from: a hydrogen atom, a deuterium atom, a halogen atom, 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 substituted or unsubstituted C 1 -C 30 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 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 2 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 2 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 30 aryl group, or a substituted or unsubstituted C 2 -C 30 heteroaryl group;
each of R 3 is independently a hydrogen atom, a deuterium atom, a halogen atom, 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 substituted or unsubstituted C 1 -C 30 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 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 2 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 2 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 30 aryl group, or an unsubstituted C 2 -C 30 heteroaryl group; and
a is an integer of 0 to 4.