Organometallic compounds and organic light-emitting devices containing them

Abstract

The present invention provides organometallic compounds and organic light-emitting devices containing them. [Solution] An organometallic compound represented by the following chemical formula 1 and an organic light-emitting device containing the organometallic compound are disclosed, wherein in the following chemical formula 1, M1 is a transition metal, and L 11 L is a ligand represented by the following chemical formula 1-1. 12 is an organic ligand, n11 is 1, n12 is 0, 1, or 2, and for descriptions of other substituents, see the description of the invention: JPEG2026054445000167.jpg65170

Description

[Technical Field]

[0001] This invention relates to organometallic compounds and organic light-emitting devices containing the same. [Background technology]

[0002] Organic light-emitting devices are self-emitting elements that excel in viewing angle, response time, brightness, driving voltage, and response speed, and can be made multi-colored.

[0003] For example, an organic light-emitting device includes an anode, a cathode, and an organic layer interposed between the anode and the cathode, which includes a light-emitting layer. A hole transport region is provided between the anode and the light-emitting layer, and an electron transport region is provided between the light-emitting layer and the cathode. Holes injected from the anode move to the light-emitting layer via the hole transport region, and electrons injected from the cathode move to the light-emitting layer via the electron transport region. The holes and electrons recombine in the light-emitting layer region to generate an exciton. Light is generated as the exciton changes from an excited state to a ground state. [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] The problem that this invention aims to solve is to provide a novel organometallic compound and an organic light-emitting element employing the same. [Means for solving the problem]

[0005] In one aspect, an organometallic compound represented by the following chemical formula 1 is provided: [ka] In the aforementioned chemical formula 1, M1 is a transition metal, L 11 This is a ligand represented by the following chemical formula 1-1, L 12is an organic ligand, n11 is 1, n12 is 0, 1 or 2, [Chemical formula]

[0006] In the chemical formula 1-1, *1 to *4 are binding sites with M1 independently of each other, A 10 is an N-containing heterocyclic group, A 20 and A 30 are, independently of each other, selected from a C5-C 30 carbocyclic group and a C1-C 30 heterocyclic group, T1 is selected from a single bond, *-N(R1)-*’, *-B(R1)-*’, *-P(R1)-*’, *-C(R1)(R2)-*’, *-Si(R1)(R2)-*’, *-Ge(R1)(R2)-*’, *-S-*’, *-Se-*’, *-O-*’, *-C(=O)-*’, *-S(=O)-*’, *-S(=O)2-*’, *-C(R1)=C(R2)-*’, *-C(=S)-*’, and *-C≡C-*’; T2 is selected from a single bond, *-N(R3)-*’, *-B(R3)-*’, *-P(R3)-*’, *-C(R3)(R4)-*’, *-Si(R3)(R4)-*’, *-Ge(R3)(R4)-*’, *-S-*’, *-Se-*’, *-O-*’, *-C(=O)-*’, *-S(=O)-*’, *-S(=O)2-*’, *-C(R3)=C(R4)-*’, *-C(=S)-*’, and *-C≡C-*’; X 11 is C(R 11 ) or N, X 12 is C(R 12 ) or N, X 20 is C or N, X 30 is C or N, X 21 , X 22 , X 31 and X32 These are C or N, independently of each other. Ar1 is a group represented by the following chemical formula 2, [ka]

[0007] In the aforementioned chemical formula 2, E1 and E5 are deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 A heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), or -P(=O)(Q8)(Q9), E2-E4 are independently hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 A heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), or -P(=O)(Q8)(Q9), * indicates a bonding site with an adjacent atom. Ar1 has an asymmetric structure. R 11 and R 12 These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 A heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), or -P(=O)(Q8)(Q9), R 11 and R 12 Two or more adjacent elements are optionally joined to form at least one R 10 Substitute or non-substitute C5-C 30 A carbon ring group, or at least one R 10 Substitute or non-substitute C1-C 30 It can form a heterocyclic group, R1~R4, R 10 , R 20 , R 30 , R 41 and R 44 These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10A heterocycloalkenyl group, a substituted or unsubstituted C6-C 60 aryl group, a substituted or unsubstituted C6-C 60 aryloxy group, a substituted or unsubstituted C6-C 60 arylthio group, a substituted or unsubstituted C1-C 60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic hetero-condensed polycyclic group, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), or -P(=O)(Q8)(Q9), and R1 to R4, R 10 , R 20 , R 30 , R 41 and R 44 among them, two or more adjacent ones are optionally bonded to each other to form a substituted or unsubstituted C5-C 30 carbocyclic group, or a substituted or unsubstituted C1-C 30 heterocyclic group, among 20 R 20 s, two or more are optionally bonded to each other to form a substituted or unsubstituted C5-C 30 carbocyclic group, or a substituted or unsubstituted C1-C 30 heterocyclic group, among 30 R 30 s, two or more are optionally bonded to each other to form a substituted or unsubstituted C5-C 30 carbocyclic group, or a substituted or unsubstituted C1-C 30 heterocyclic group, 30 b20 and b30 are, independently of each other, 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10, when b20 is 2 or more, two or more R 20 s may be the same as or different from each other, and when b30 is 2 or more, two or more R 30 s may be the same as or different from each other, R 42 is a substituted or unsubstituted C1-C 60 alkyl group, and R 42has a molecular weight of 18 or more, R 43 is deuterium, -F, -Cl, -Br, -I, -SF5, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazine group, a hydrazone group, a carboxyl 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 C1-C 60 alkyl group, a substituted or unsubstituted C2-C 60 alkenyl group, a substituted or unsubstituted C2-C 60 alkynyl group, a substituted or unsubstituted C1-C 60 alkoxy group, a substituted or unsubstituted C3-C 10 cycloalkyl group, a substituted or unsubstituted C1-C 10 heterocycloalkyl group, a substituted or unsubstituted C3-C 10 cycloalkenyl group, a substituted or unsubstituted C1-C 10 heterocycloalkenyl group, a substituted or unsubstituted C6-C 60 aryl group, a substituted or unsubstituted C6-C 60 aryloxy group, a substituted or unsubstituted C6-C 60 arylthio group, a substituted or unsubstituted C1-C 60 heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic hetero-condensed polycyclic group, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), or -P(=O)(Q8)(Q9), R 42 and R 43 at least one of which has a molecular weight of 19 or more, the substituted C5-C 30 carbocyclic group, the substituted C1-C 30 heterocyclic group, the substituted C1-C 60 alkyl group, the substituted C2-C 60 alkenyl group, the substituted C2-C 60 alkynyl group, the substituted C1-C 60 alkoxy group, the substituted C3-C 10 cycloalkyl group, the substituted C1-C 10Heterocycloalkyl groups, substituted C3-C 10 Cycloalkenyl group, substituted C1-C 10 Heterocycloalkenyl group, substituted C6-C 60 Aryl group, substituted C6-C 60 Aryloxy group, substituted C6-C 60 Arylthio group, substituted C1-C 60 heteroaryl group, substituted C1-C 60 Heteroaryloxy group, substituted C1-C 60 The substituents of the heteroarylthio group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituted monovalent non-aromatic heterocondensed polycyclic group are Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, or C1-C 60 Alkoxy group; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q 11)(Q 12 ), -Si(Q 13 )(Q 14 )(Q 15 ), -Ge(Q 13 )(Q 14 )(Q 15 ), -B(Q 16 )(Q 17 ), -P(=O)(Q 18 )(Q 19 ), or any combination thereof, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, or C1-C 60 Alkoxy group; C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroarylthio groups, monovalent non-aromatic condensed polycyclic groups, or monovalent non-aromatic heterocondensed polycyclic groups; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q 21 )(Q 22 ), -Si(Q 23 )(Q 24 )(Q 25 ), -Ge(Q 23 )(Q 24 )(Q 25 ), -B(Q 26 )(Q 27 ), -P(=O)(Q 28 )(Q 29 ), or any combination thereof, replaced by C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, or monovalent non-aromatic heterocondensed polycyclic group; or -N(Q 31 )(Q 32 ), -Si(Q 33 )(Q 34 )(Q 35 ), -Ge(Q 33 )(Q 34 )(Q 35 ), -B(Q 36 )(Q 37 ), or -P(=O)(Q 38 )(Q 39 ); and The above Q1 to Q9, Q 11 ~Q 19 Q 21 ~Q 29 and Q 31 ~Q 39These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C1-C 60 C6-C substituted with alkyl group 60 Aryl group, C6-C 60 C6-C substituted with aryl group 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 It is a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic heterocondensed polycyclic group.

[0008] In other aspects, an organic light-emitting device is provided, comprising a first electrode, a second electrode, and an organic layer interposed between the first electrode and the second electrode, the organic layer comprising one or more organometallic compounds.

[0009] The organometallic compound is contained in the light-emitting layer within the organic layer, and the organometallic compound contained in the light-emitting layer can act as a dopant. [Effects of the Invention]

[0010] The aforementioned organometallic compound exhibits excellent photochemical stability, and organic light-emitting devices employing this organometallic compound can achieve improved efficiency and lifespan. Therefore, by using this organometallic compound, high-quality organic light-emitting devices can be realized. [Brief explanation of the drawing]

[0011] [Figure 1] This is a schematic cross-sectional view showing an organic light-emitting element according to one embodiment. [Figure 2] This is a diagram illustrating the energy transition according to one embodiment. [Figure 3] This is a diagram illustrating the energy transition according to one embodiment. [Figure 4] This is a diagram illustrating the energy transition according to one embodiment. [Modes for carrying out the invention]

[0012] The aforementioned organometallic compound is represented by the following chemical formula 1: [ka] In the above chemical formula 1, M1 is a transition metal.

[0013] According to one embodiment, in the above chemical formula 1, M1 is beryllium (Be), magnesium (Mg), aluminum (Al), calcium (Ca), titanium (Ti), manganese (Mn), cobalt (Co), copper (Cu), zinc (Zn), gallium (Ga), germanium (Ge), zirconium (Zr), ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), rhenium (Re), platinum (Pt), or gold (Au).

[0014] According to one embodiment, M1 is Pd, Pt, or Au.

[0015] According to one embodiment, in the chemical formula 1, M1 is Pt or Pd.

[0016] According to one embodiment, in the above chemical formula 1, M1 is Pt.

[0017] In the above chemical formula 1, L 11 The ligand is represented by the following chemical formula 1-1: [ka]

[0018] In the above chemical formula 1-1, *1 to *4 are independent bonding sites with M1.

[0019] In the above chemical formula 1-1, A 20 and A 30 These are independent of each other, C5-C 30 Carbon ring group or C1-C 30 It is a heterocyclic group.

[0020] According to one embodiment, A 20 and A 30These are, independently of each other, a benzene group, a naphthalene group, anthracene group, a phenanthrene group, a triphenylene group, a pyrene group, a chrysene group, a cyclopentadiene group, a 1,2,3,4-tetrahydronaphthalene group, a furan group, a thiophene group, a silole group, an indene group, a fluorene group, an indole group, a carbazole group, a benzofuran group, a benzothiophene group, a benzothiophene group, a benzosilole group, azafluorene group, azacarbazole group, azadibenzofuran group, azadibenzothiophene group, azadibenzosilole group, azadibenzosilole group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group The group is either a quinoline group, an isoquinoline group, a quinoxaline group, a quinazoline group, a phenanthroline group, a pyrrole group, a pyrazole group, an imidazole group, a triazole group, a tetrazole group, an oxazole group, an isoxazole group, a thiazole group, an isothiazole group, an oxadiazole group, a thiadiazole group, a benzopyrazole group, a benzimidazole group, an indazole group, a benzoxazole group, a benzothiazole group, a benzoxadiazole group, a benzothiadiazole group, a benzotriazole group, a diazaidene group, a triazaidene group, a 5,6,7,8-tetrahydroisoquinoline group, or a 5,6,7,8-tetrahydroquinoline group.

[0021] According to one embodiment, A 10 These are selected independently from A10-1 to A10-20 below: [ka]

[0022] In the above chemical formulas A10-1 to A10-20, R 11 and R 12 The explanation relating thereto is the same as that described in this specification. R 13 ~R 16 The explanations relating to R are independent of each other. 10 Refer to the explanation below. *, *', and *” are bonding sites with adjacent atoms, respectively.

[0023] According to one embodiment, A 20 The following chemical formulas A20-1 to A20-13 are selected: [ka]

[0024] In the above chemical formulas A20-1 to A20-13, X 20 For further explanation, please refer to the information provided in this specification. Y 21 This is a single bond, O, S, N(R) 26 ), C(R 26 )(R 27 ), or Si(R 26 )(R 27 ) and R 21 ~R 29 R is independent of each other. 20 Refer to the explanation below. *, *', and *” are bonding sites with adjacent atoms, respectively.

[0025] According to one embodiment, A 30 The following chemical formulas A30-1 to A30-12 are selected: [ka]

[0026] In the above chemical formulas A30-1 to A30-12, X 30 For further explanation, please refer to the information provided in this specification. Y 31 This is a single bond, O, S, N(R) 37 ), C(R 37 )(R 38 ), or Si(R 37 )(R 38 ) and R 31 ~R 38 R is independent of each other. 30 Refer to the explanation below. * and *' represent bonding sites with adjacent atoms, respectively.

[0027] In the above chemical formula 1-1, Ar1 is the group represented by the following chemical formula 2: [ka]

[0028] In the aforementioned chemical formula 2, E1 and E5 are deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 These are heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic groups, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), or -P(=O)(Q8)(Q9).

[0029] According to one embodiment, E1 and E5 are substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 These are heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic groups, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), or -P(=O)(Q8)(Q9).

[0030] In the above chemical formula 2, E2 to E4 are independently hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 These are heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic groups, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), or -P(=O)(Q8)(Q9).

[0031] According to one embodiment, E2 to E4 are independently hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, or substituted or unsubstituted C1-C 60 It is an alkoxy group.

[0032] According to one embodiment, E2 to E4 are independently hydrogen or deuterium.

[0033] In the above chemical formula 2, * represents a bonding site with an adjacent atom.

[0034] In the above chemical formula 1-1, Ar1 has an asymmetric structure.

[0035] According to one embodiment, Ar1 is a group represented by any one of the following chemical formulas Ar1-1 to Ar1-13: [ka]

[0036] [ka]

[0037] [ka]

[0038] [ka]

[0039] [ka]

[0040] [ka]

[0041] [ka]

[0042] [ka]

[0043] [ka]

[0044] [ka]

[0045] [ka]

[0046] [ka]

[0047] [ka]

[0048] In the aforementioned chemical formulas Ar1-1 to Ar1-13, The explanations for E1 to E5 are the same as those described in this specification. Y 61 and Y 62 These are independent of each other, single bonds, O, S, N(E) 68 ), or C(E 68 )(E 69 ) and E 11 ~E 18 , E 21 ~E 28 , E 31 ~E 38 , E 41 ~E 48 , E 51 ~E 57 and E 61 ~E 69 These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, or C1-C 60 Alkoxy group; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q 11 )(Q 12 ), -Si(Q 13 )(Q 14 )(Q 15 ), -Ge(Q 13 )(Q 14 )(Q15 ), -B(Q 16 )(Q 17 ), -P(=O)(Q 18 )(Q 19 ), or any combination thereof, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, or C1-C 60 Alkoxy group; C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroarylthio groups, monovalent non-aromatic condensed polycyclic groups, or monovalent non-aromatic heterocondensed polycyclic groups; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q21 )(Q 22 ), -Si(Q 23 )(Q 24 )(Q 25 ), -Ge(Q 23 )(Q 24 )(Q 25 ), -B(Q 26 )(Q 27 ), -P(=O)(Q 28 )(Q 29 ), or any combination thereof, replaced by C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, or monovalent non-aromatic heterocondensed polycyclic group; or -N(Q 31 )(Q 32 ), -Si(Q 33 )(Q 34 )(Q 35 ), -Ge(Q 33 )(Q 34 )(Q 35 ), -B(Q 36 )(Q 37 ), or -P(=O)(Q 38 )(Q 39 ); and E 11 ~E 18 , E 21 ~E 28 , E 31 ~E 38 , E 41 ~E 48 , E 51 ~E 57 and E 61 ~E 69Two or more of these elements optionally combine with each other to form a substituted or non-substituted C5-C. 30 A carbon ring group, or a substituted or unsubstituted C1-C 30 It can form a heterocyclic group, * indicates a bonding site with an adjacent atom.

[0049] According to one embodiment, E 11 ~E 18 , E 21 ~E 28 , E 31 ~E 38 , E 41 ~E 48 , E 51 ~E 57 and E 61 ~E 69 They are independent of each other, Hydrogen, deuterium, -F, -Cl, -Br, -I, cyano group, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, neo-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, n-hexyl group, isohexyl group, sec-hexyl group, tert-hexyl group, n-heptyl group, isoheptyl group, sec-heptyl group, tert-heptyl group, n-octyl Group, isooctyl group, sec-octyl group, tert-octyl group, n-nonyl group, isononyl group, sec-nonyl group, tert-nonyl group, n-decyl group, isodecyl group, sec-decyl group, tert-decyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantanyl group, norbornanyl group, norborneyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, naphthyl group, fluorenyl group, phenyl Xenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, crisenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyridinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalyl Nyl group, quinazolinyl group, synnorinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, or imidazopyridinyl group; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C10 Alkyl alkyl group, C1-C 10Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantanyl group, norbornanyl group, norborneyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, naphthyl group, fluorenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, crisenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyridinyl group, Radzinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, synnolinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzoca Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, neo-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, n-hexyl group, isohexyl group, sec-hexyl group, tert-hexyl group, n-heptyl group, isoheptyl group, sec-heptyl group, tert-heptyl group, n-octyl group, substituted with a rubazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, imidazopyridinyl group, or any combination thereof. Group, isooctyl group, sec-octyl group, tert-octyl group, n-nonyl group, isononyl group, sec-nonyl group, tert-nonyl group, n-decyl group, isodecyl group, sec-decyl group, tert-decyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantanyl group, norbornanyl group, norborneyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, naphthyl group, fluorenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group,Pyrenyl group, crisenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyridinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolyl group, cinnolinyl group, ka Rubazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, or imidazopyridinyl group; or, -N(Q 31 )(Q 32 ), -Si(Q 33 )(Q 34 )(Q 35 ), -Ge(Q 33 )(Q 34 )(Q 35 ), -B(Q 36 )(Q 37 ), or -P(=O)(Q 38 )(Q 39 );

[0050] According to one embodiment, E 11 ~E 18 , E 21 ~E 28 , E 31 ~E 38 , E 41 ~E 48 , E 51 ~E 57 and E 61 ~E 69 They are independent of each other, Hydrogen, deuterium, C1-C 30 Alkyl alkyl group, C6-C 60 Aryl group, or C1-C 60 heteroaryl group; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 10 Alkyl alkyl group, C1-C 10 C1-C1 30 Alkyl alkyl group, C6-C 60 Aryl group, or C1-C 60 Heteroaryl group; or -N(Q 31 )(Q 32 ), -Si(Q 33 )(Q 34 )(Q 35 ), -Ge(Q 33 )(Q 34 )(Q 35 ), -B(Q 36 )(Q 37 ), or -P(=O)(Q 38 )(Q 39 );

[0051] According to one embodiment, E 11 ~E 18 , E 21 ~E 28 , E 31 ~E 38 , E 41 ~E 48 , E 51 ~E 57 and E 61 ~E 69 They are independent of each other, Hydrogen, deuterium, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, neo-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, n-hexyl group, isohexyl group, sec-hexyl group, tert-hexyl group, n-heptyl group, isoheptyl group, sec-heptyl group, tert-heptyl group, n-octyl group, isooctyl group, sec-octyl group, tert-octyl group, n-nonyl group, isononyl group, sec-nonyl group, tert-nonyl group, n-decyl group, isodecyl group, sec-decyl group, or tert-decyl group; Deuterium-substituted methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, neo-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, n-hexyl group, isohexyl group, sec-hexyl group, tert-hexyl group, n-heptyl group, isoheptyl group, sec-heptyl group, tert-heptyl group, n-octyl group, isooctyl group, sec-octyl group, tert-octyl group, n-nonyl group, isononyl group, sec-nonyl group, tert-nonyl group, n-decyl group, isodecyl group, sec-decyl group, or tert-decyl group; Phenyl group, naphthyl group, fluorenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, or chrysenyl group; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 10 Alkyl alkyl group, C1-C 10A phenyl group, naphthyl group, fluorenyl group, phenantrenyl group, anthracenyl group, fluorantenyl group, triphenylenyl group, pyrenyl group, or crisenyl group substituted with any combination thereof; or -N(Q 31 )(Q 32 ), -Si(Q 33 )(Q 34 )(Q 35 ), -Ge(Q 33 )(Q 34 )(Q 35 ), -B(Q 36 )(Q 37 ), or -P(=O)(Q 38 )(Q 39 );

[0052] In the above chemical formula 1-1, R 11 and R 12 These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 A heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), or -P(=O)(Q8)(Q9), R 11 and R 12 Two or more adjacent elements are selectively joined to each other, forming at least one R 10 Substitute or non-substitute C5-C 30 A carbon ring group, or at least one R 10 Substitute or non-substitute C1-C 30 It can form heterocyclic groups.

[0053] The first linking group is selected from *-N(R8)-*', *-B(R8)-*', *-P(R8)-*', *-C(R8)(R9)-*', *-Si(R8)(R9)-*', *-Ge(R8)(R9)-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O)2-*', *-C(R8)=*', *=C(R8)-*', *-C(R8)=C(R9)-*', *-C(=S)-*', and *-C≡C-*', and the descriptions relating to R8 and R9 are as specified herein. 10 Refer to the explanation below, where * and *' are bonding sites with adjacent atoms, respectively.

[0054] According to one embodiment, R 11 and R 12 Two or more adjacent R groups are selectively bonded to each other through single bonds, double bonds, or first linking groups, forming at least one R group. 10 Substitute or non-substitute C5-C 30 A carbon ring group, or at least one R 10 Substitute or non-substitute C1-C 30 Heterocyclic group (e.g., at least one R 10It can form substituted or unsubstituted groups such as cyclopentane, cyclohexane, cycloheptane, cyclooctane, fluorene, carbazole, xanthene, and acridine groups.

[0055] In the above chemical formula 1-1, R1 to R4, R 10 , R 20 , R 30 , R 41 and R 44 These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 A heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), or -P(=O)(Q8)(Q9), R1~R4, R 10 , R 20 , R 30 , R 41 and R 44Two or more adjacent elements selectively combine with each other to form a substituted or non-substituted C5-C. 30 A carbon ring group, or a substituted or unsubstituted C1-C 30 It can form a heterocyclic group, b20 R 20 Two or more of these elements selectively combine with each other to form a substituted or unsubstituted C5-C. 30 A carbon ring group, or a substituted or unsubstituted C1-C 30 It can form a heterocyclic group, b30 R 30 Two or more of these elements selectively combine with each other to form a substituted or unsubstituted C5-C. 30 A carbon ring group, or a substituted or unsubstituted C1-C 30 It can form heterocyclic groups.

[0056] According to one embodiment, multiple R 20 Two or more of the following; or R1-R4, R 10 , R 20 , R 30 , R 41 and R 44 Two or more adjacent R groups are selectively bonded to each other through single bonds, double bonds, or first linking groups, forming at least one R group. 10a Substitute or non-substitute C5-C 30 A carbon ring group, or at least one R 10a Substitute or non-substitute C1-C 30 Heterocyclic group (e.g., at least one R 10a The R can form substituted or unsubstituted groups such as fluorene groups, xanthene groups, and acridine groups. 10a The explanation relating to this is as follows in this specification. 10 Refer to the explanation for details.

[0057] In the aforementioned chemical formula 1-1, b20 and b30 are independently 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10. If b20 is 2 or more, then R is 2 or more. 20 They may be the same or different from each other, and if b30 is 2 or more, then 2 or more R 30They may be the same or different from one another.

[0058] According to one embodiment, R1 to R4, R 10 ~R 12 , R 20 , R 30 , R 41 and R 44 They are independent of each other, Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, -SF5, C1-C 20 Alkyl group, or C1-C 20 Alkoxy group; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 10 C1-C1 20 Alkyl or C1-C 20 Alkoxy group; Cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantanyl group, norbornanyl group, norborneyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, naphthyl group, fluorenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrimidinyl group, pyridadinyl group, isoin Dylyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, synnolinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, or imidazopyridinyl group; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 20 Alkyl alkyl group, C1-C 20Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantanyl group, norbornanyl group, norborneyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, naphthyl group, fluorenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, crisenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazolyl group Dinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, synnolinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarb Cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantanyl, norbornanyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, naphthyl, fluorenyl, phenantrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, pyrrolyl, thiophenyl, furanyl, imidazopyridinyl, imidazopyridinyl, cyclopentyl, cyclohexenyl, cycloheptenyl, phenyl, naphthyl, fluorenyl, phenantrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, pyrrolyl, thiophenyl, furanyl, imidazopyridinyl Zolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyridinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolyl group, synnolinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group,Tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, or imidazopyrimidinyl group; or, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), or -P(=O)(Q8)(Q9); Questions Q1 through Q9 are independent of each other. -CH3, -CD3, -CD2H, -CDH2, -CH2CH3, -CH2CD3, -CH2CD2H, -CH2CDH2, -CHDCH3, -CHDCD2H, -CHDCDH2, -CHDCD3, -CD2CD3, -CD2CD2H, or -CD2CDH2; n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, phenyl group, or naphthyl group; or Deuterium, C1-C 10 n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, phenyl group, or naphthyl group, substituted with an alkyl group, a phenyl group, or any combination thereof;

[0059] According to one embodiment, R1 to R4, R 10 ~R 12 , R 20 , R 30 , R 41 and R 44 These are, independently of each other, hydrogen, deuterium, -F, a cyano group, a nitro group, -SF5, -CH3, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, any one of the following chemical formulas 9-1 to 9-61, or any one of the following chemical formulas 10-1 to 10-154 and 10-201 to 10-369: [ka] [ka] [ka] [ka] [ka] [ka] [ka] [ka] [ka] [ka]

[0060] In the chemical formulas 9-1 to 9-61 and 10-1 to 10-369, * represents a bonding site with an adjacent atom, Ph represents a phenyl group, and TMS represents a trimethylsilyl group.

[0061] In the above chemical formula 1-1, R 42 C1-C is either substituted or non-substituted. 60 It is an alkyl group, R 42 Its molecular weight is 18 or greater.

[0062] According to one embodiment, R 42is an ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, neo-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, n-hexyl group, isohexyl group, sec-hexyl group, tert-hexyl group, n-heptyl group, isoheptyl group, sec-heptyl group, tert-heptyl group, n-octyl group, isooctyl group, sec-octyl group, tert-octyl group, n-nonyl group, isononyl group, sec-nonyl group, tert-nonyl group, n-decyl group, isodecyl group, sec-decyl group, or tert-decyl group; or Deuterium-substituted methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, neo-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, n-hexyl group, isohexyl group, sec-hexyl group, tert-hexyl group, n-heptyl group, isoheptyl group, sec-heptyl group, tert-heptyl group, n-octyl group, isooctyl group, sec-octyl group, tert-octyl group, n-nonyl group, isononyl group, sec-nonyl group, tert-nonyl group, n-decyl group, isodecyl group, sec-decyl group, or tert-decyl group;

[0063] In the above chemical formula 1-1, R 43 This includes deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 These are heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic groups, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), or -P(=O)(Q8)(Q9).

[0064] According to one embodiment, R 43 This includes deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, -SF5, C1-C 20 Alkyl group, or C1-C 20 Alkoxy group; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 10 C1-C1 20 Alkyl or C1-C 20 Alkoxy group; Cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantanyl group, norbornanyl group, norborneyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, naphthyl group, fluorenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrimidinyl group, pyridadinyl group, isoin Dylyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, synnolinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, or imidazopyridinyl group; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 20 Alkyl alkyl group, C1-C 20Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantanyl group, norbornanyl group, norborneyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, naphthyl group, fluorenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, crisenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazolyl group Dinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, synnolinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarb Cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantanyl, norbornanyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, naphthyl, fluorenyl, phenantrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, pyrrolyl, thiophenyl, furanyl, imidazopyridinyl, imidazopyridinyl, cyclopentyl, cyclohexenyl, cycloheptenyl, phenyl, naphthyl, fluorenyl, phenantrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, pyrrolyl, thiophenyl, furanyl, imidazopyridinyl Zolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyridinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolyl group, synnolinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group,Tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, or imidazopyrimidinyl group; or, -N(Q1)(Q2), -Si(Q3)(Q4)(Q5), -Ge(Q3)(Q4)(Q5), -B(Q6)(Q7), or -P(=O)(Q8)(Q9); Questions Q1 through Q9 are independent of each other. -CH3, -CD3, -CD2H, -CDH2, -CH2CH3, -CH2CD3, -CH2CD2H, -CH2CDH2, -CHDCH3, -CHDCD2H, -CHDCDH2, -CHDCD3, -CD2CD3, -CD2CD2H, or -CD2CDH2; n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, phenyl group, or naphthyl group; or Deuterium, C1-C 10 n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, phenyl group, or naphthyl group, substituted with an alkyl group, a phenyl group, or any combination thereof;

[0065] According to one embodiment, R 43 This is a group represented by any one of the chemical formulas 9-1 to 9-61, or any one of the chemical formulas 10-1 to 10-369.

[0066] In the above chemical formula 1-1, R 42 and R 43 At least one of them has a molecular weight of 19 or more.

[0067] According to one embodiment, R42 and R 43 These are, independently of each other, an ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, neo-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, n-hexyl group, isohexyl group, sec-hexyl group, tert-hexyl group, n-heptyl group, isoheptyl group, sec-heptyl group, tert-heptyl group, n-octyl group, isooctyl group, sec-octyl group, tert-octyl group, n-nonyl group, isononyl group, sec-nonyl group, tert-nonyl group, n-decyl group, isodecyl group, sec-decyl group, or tert-decyl group; or Deuterium-substituted ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, neo-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, n-hexyl group, isohexyl group, sec-hexyl group, tert-hexyl group, n-heptyl group, isoheptyl group, sec-heptyl group, tert-heptyl group, n-octyl group, isooctyl group, sec-octyl group, tert-octyl group, n-nonyl group, isononyl group, sec-nonyl group, tert-nonyl group, n-decyl group, isodecyl group, sec-decyl group, or tert-decyl group;

[0068] According to one embodiment, Q1 to Q9, Q 11 ~Q 19 Q 21 ~Q 29 and Q 31 ~Q 39 They are independent of each other, Deuterium, -CH3, -CD3, -CD2H, -CDH2, -CH2CH3, -CH2CD3, -CH2CD2H, -CH2CDH2, -CHDCH3, -CHDCD2H, -CHDCDH2, -CHDCD3, -CD2CD3, -CD2CD2H, or -CD2CDH2; n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, phenyl group, or naphthyl group; or Deuterium, C1-C 10 n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, neo-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, phenyl group, or naphthyl group, substituted with an alkyl group, a phenyl group, or any combination thereof;

[0069] In the above chemical formula 1-1, X 20 is C or N, X 30 It is either C or N.

[0070] For example, X 20 is C. Another example is X 20 It is N.

[0071] For example, X 30 is C. Another example is X 30 It is N.

[0072] In the above chemical formula 1-1, X 21 , X 22 , X 31 and X 32 These are either C or N, independently of each other.

[0073] For example, X 21 is C. Another example is X 21 It is N.

[0074] For example, X 22 is C. Another example is X 22 It is N.

[0075] For example, X 31 is C. Another example is X 31 It is N.

[0076] For example, X 32 is C. Another example is X 32 It is N.

[0077] In the above chemical formula 1-1, M1 and A 10 The connection between M1 and A 20 The connection between M1 and A 30 The connection between M1 and A 40 The bond between them is either a covalent bond or a dative bond, independent of each other.

[0078] According to one embodiment, the M1 and A 10 The connection between M1 and A 20 The connection between M1 and A 30 The connection between M1 and A 40 Of the bonds, two are covalent bonds, and the remaining two are coordinate bonds.

[0079] According to one embodiment, M1 and A 10 The bond between M1 and A is a coordinate covalent covalent, and 20 The bond between M1 and A is a covalent bond. 30 The bond between M1 and A is a covalent bond. 40 The bond with is a coordinate covalent

[0080] According to one embodiment, the organometallic compound represented by chemical formula 1 is represented by the following chemical formula 11 or 12: [ka]

[0081] [ka]

[0082] In the aforementioned chemical formulas 11 and 12, M1, A 20 , A 30 , X 11 , X 12 , X 20 ~X22 , X 30 ~X 32 T1, T2, Ar1, R 20 , R 30 , R 41 ~R 44 The descriptions relating to b20 and b30 are the same as those described in this specification, X 13 is C(R 13 ) or N, X 14 is C(R 14 ) or N, X 15 is C(R 15 ) or N, X 16 is C(R 16 ) or N, R 13 ~R 16 The explanations relating to R are independent of each other. 10 This is similar to the explanation provided.

[0083] According to one embodiment, the organometallic compound represented by chemical formula 1 is represented by the following chemical formula 21 or 22: [ka]

[0084] [ka]

[0085] In the aforementioned chemical formulas 21 and 22, M1, Ar1, T1, R 11 , R 12 and R 41 ~R 44 The explanations relating to each of these are the same as those described in this specification. R 13 ~R 16 The explanations relating to R are independent of each other. 10 This is similar to the explanation regarding the above, R 21 ~R 23 The explanations relating to R are independent of each other. 20 This is similar to the explanation regarding the above, R31 ~R 36 The explanations relating to R are independent of each other. 30 This is similar to the explanation provided.

[0086] According to one embodiment, the organometallic compound is also electrically neutral.

[0087] In the above chemical formula 1, L 12 It is an organic ligand.

[0088] According to one embodiment, L 12 It is either a monodentate or bidentate ligand.

[0089] For example, in the above chemical formula 1, L 12 The ligand is represented by one of the following chemical formulas 7-1 to 7-11, but is not limited to these: [ka]

[0090] In the above chemical formulas 7-1 to 7-11, A 71 and A 72 These are independent of each other, C5-C 20 Carbon ring group or C1-C 20 It is a heterocyclic group, X 71 and X 72 These are C or N, independently of each other. X 73 is N or C(Q 73 ) and X 74 is N or C(Q 74 ) and X 75 is N or C(Q 75 ) and X 76 is N or C(Q 76 ) and X 77 is N or C(Q 77 ) and X 78 is O, S or N(Q 78 ) and X79 is O, S or N(Q 79 ) and Y 71 and Y 72 These are, independently of each other, single bonds, double bonds, substituted or unsubstituted C1-C5 alkylene groups, substituted or unsubstituted C2-C5 alkenylene groups, or substituted or unsubstituted C6-C 10 It is an arylene group, Z 71 and Z 72 These are N, O, and N(R) independently of each other. 74 ), P(R 75 )(R 76 ), or As(R 75 )(R 76 ) and Z 73 is P or As, Z 74 It is CO or CH2, R 71 ~R 80 and Q 73 ~Q 79 These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60Arylthio group, substituted or unsubstituted C1-C 60 A heteroaryl group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, or a substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, R 71 and R 72 They can selectively bond to form a ring, R 77 and R 78 They can selectively bond to form a ring, R 78 and R 79 They can selectively bond to form a ring, R 79 and R 80 They can selectively bond to form a ring, b71 and b72 are independently 1, 2, or 3. * and *' are independent bonding sites with adjacent atoms.

[0091] For example, in the above chemical formula 7-1, A 71 and A 72 These are, independently of each other, a benzene group, a naphthalene group, an imidazole group, a benzimidazole group, a pyridine group, a pyrimidine group, a triazine group, a quinoline group, or an isoquinoline group.

[0092] For example, in the above chemical formula 7-1, X 72 and X 79 Each of these is N, but it is not limited to N.

[0093] For example, in the above chemical formula 7-7, X 73 is C(Q 73 ) and X 74 is C(Q 74 ) and X 75 is C(Q 75 ) and X 76 is C(Q 76 ) and X 77 is C(Q 77 ) However, it is not limited to that.

[0094] For example, in the above chemical formula 7-8, X78 is N(Q 78 ) and X 79 is N(Q 79 ) However, it is not limited to that.

[0095] For example, in the above chemical formulas 7-2, 7-3, and 7-8, Y 71 and Y 72 These are, but are not limited to, a substituted or unsubstituted methylene group or a substituted or unsubstituted phenylene group, independently of each other.

[0096] For example, in the above chemical formulas 7-1 and 7-2, Z 71 and Z 72 While it is O, it is not limited to that.

[0097] For example, in the above chemical formula 7-4, Z 73 While P is the case, it is not limited to P.

[0098] For example, in the above chemical formulas 7-1 to 7-11, R 71 ~R 80 and Q 73 ~Q 79 These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, -SF5, C1-C 20 Alkyl group, or C1-C 20 Alkoxy group; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 10Alkyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, bicyclo[2.2.1]heptanyl group, adamantanyl group, norbornanyl group, norborneyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, biphenyl group, C1-C 20 C1-C substituted with alkylphenyl groups, naphthyl groups, pyridinyl groups, pyrimidinyl groups, or any combination thereof. 20 Alkyl or C1-C 20 Alkoxy group; Cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, bicyclo[2.2.1]heptanyl group, adamantanyl group, norbornanyl group, norborneyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, biphenyl group, C1-C 20 Alkylphenyl group, naphthyl group, fluorenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl 14L group, quinoxalinyl group, quinazolinyl group, synnorinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, dibenzosilolyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, or imidazopyridinyl group; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 20 Alkyl alkyl group, C1-C 20 Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, bicyclo[2.2.1]heptanyl group, adamantanyl group, norbornanyl group, norborneyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, biphenyl group, C1-C 20 Alkylphenyl group, naphthyl group, fluorenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl Group, quinoxalinyl group, quinazolinyl group, synnorinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, dibenzosilolyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, imidazopyridinyl group, -Si(Q 11 )(Q 12 )(Q 13 ), -B(Q 11 )(Q 12 ), -N(Q 11 )(Q 12), or any combination thereof, substituted with cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, bicyclo[2.2.1]heptanyl group, adamantanyl group, norbornanyl group, norborneyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, biphenyl group, C1-C 20 Alkylphenyl group, naphthyl group, fluorenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group , quinoxalinyl group, quinazolinyl group, synnorinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, dibenzosilolyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, or imidazopyridinyl group; or -Si(Q1)(Q2)(Q3), -B(Q1)(Q2), or -N(Q1)(Q2); Q1-Q3 and Q 11 ~Q 13 They are independent of each other, Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group, isopentyl group, 2-methylbutyl group, sec-pentyl group, tert-pentyl group, neo-pentyl group, 3-pentyl group, 3-methyl-2-butyl group, phenyl group, biphenyl group, C1-C 20 Alkylphenyl group, or naphthyl group; or Methyl groups, ethyl groups, n-propyl groups, isopropyl groups, n-butyl groups, isobutyl groups, sec-butyl groups, tert-butyl groups, n-pentyl groups, isopentyl groups, 2-methylbutyl groups, sec-pentyl groups, tert-pentyl groups, neo-pentyl groups, 3-pentyl groups, 3-methyl-2-butyl groups, phenyl groups, or naphthyl groups, substituted with deuterium, phenyl groups, or any combination thereof; but not limited to these.

[0099] In the above chemical formula 1, L 12 The ligand is represented by one of the following chemical formulas 8-1 to 8-23, but is not limited to these: [ka]

[0100] In the aforementioned chemical formulas 8-1 to 8-23, Ph is a phenyl group, Ph-d5 is a phenyl group in which all hydrogen atoms are replaced by deuterium. * and *' are bonding sites with adjacent atoms.

[0101] In the above chemical formula 1, n11 is 1, and n12 is 0, 1, or 2.

[0102] Specifically, in the above chemical formula 1, M1 is Pt, n11 is 1, and n12 is 0, but is not limited to these.

[0103] According to one embodiment, the organometallic compound is selected from the following compounds 1 to 324: [ka] [ka] [ka]

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[0104] The organometallic compound represented by the aforementioned chemical formula 1 satisfies the structure of the aforementioned chemical formula 1, and is represented by the L of the aforementioned chemical formula 1-1. 11 In ligands, A 10 The ring is substituted with Ar1 represented by chemical formula 2, and the pyridine ring is R 42 and R 43 It is substituted with this. This structure improves photochemical stability and is suitable for deep blue emission. Therefore, electronic devices employing organometallic compounds represented by chemical formula 1, such as organic light-emitting devices, can exhibit excellent luminescence efficiency, lifetime, and color purity.

[0105] Although not limited by any particular theory, Ar1 and R have a bulky structure. 42 and R 43 The central metal atom M of the organometallic compound is formed by Ar1 having an asymmetric structure. 11 Since the organometallic compound is shielded and interaction between the organometallic compound and the host compound is prevented when applied to the light-emitting layer, the structural stability of the organometallic compound can be improved. As a result, the efficiency and lifespan of the organic light-emitting device can be improved by using the organometallic compound.

[0106] The HOMO energy levels, LUMO energy levels, and T1 energy levels of some compounds in the organometallic compounds represented by the above chemical formula 1 were evaluated using the Gaussian 09 program with molecular structure optimization based on density functional theory (DFT) using B3LYP. The results are shown in Table 1 below.

[0107] [Table 1] [ka]

[0108] From Table 1, it can be confirmed that the organometallic compound represented by chemical formula 1 has electrical properties suitable for use as an electronic element, such as a dopant (e.g., emitter or sensor) in an organic light-emitting device.

[0109] According to one embodiment, the full width at half maximum (FWHM) of the emission peak in the emission spectrum or electroluminescence spectrum of the organometallic compound is 60 nm or less. For example, the full width at half maximum (FWHM) of the emission peak in the emission spectrum or electroluminescence spectrum of the organometallic compound is in the range of 5 nm to 50 nm, 7 nm to 40 nm, or 10 nm to 30 nm.

[0110] A method for synthesizing the organometallic compound represented by the chemical formula 1 can be understood by those skilled in the art by referring to the synthesis examples described later.

[0111] The method for confirming the structure of the organometallic compound represented by the chemical formula 1 is not particularly limited. According to one embodiment, the structure of the organometallic compound can be confirmed by known methods (e.g., NMR, LC-MS, etc.).

[0112] [Electronic element] In other respects, electronic devices containing organometallic compounds are provided.

[0113] According to one embodiment, the electronic element is an organic light-emitting device (OLED), an organic photodiode (OPD), or an organic solar cell (OSC).

[0114] [Organic light-emitting element] In other aspects, an organic light-emitting device containing the organometallic compound is provided.

[0115] According to one embodiment, the organic light-emitting element includes a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode, which includes a light-emitting layer. The organic layer may contain an organometallic compound represented by the chemical formula 1.

[0116] According to one embodiment, the light-emitting layer may contain the organometallic compound.

[0117] According to one embodiment, the light-emitting layer includes a host and an emitter, and the emitter may include the organometallic compound.

[0118] According to one embodiment, the host content in the light-emitting layer is greater than the organometallic compound content, based on weight.

[0119] According to one embodiment, the light-emitting layer may further include a sensor.

[0120] According to one embodiment, the sensor includes a phosphorescent compound, a delayed-fluorescence compound, or any combination thereof.

[0121] For a detailed description of the host, emitter, and sensor mentioned above, please refer to the information provided herein.

[0122] The aforementioned organic light-emitting device, by comprising a light-emitting layer containing an organometallic compound represented by the chemical formula 1 as described above, can have a relatively narrow EL spectral emission peak full width at half maximum (FWHM), excellent efficiency, and lifetime characteristics.

[0123] According to one embodiment, the organometallic compound acts as a dopant (e.g., an emitter or a sensor) in the light-emitting layer, and the light-emitting layer may further contain a host (i.e., the content of the organometallic compound represented by chemical formula 1 in the light-emitting layer is less than the content of the host).

[0124] According to one embodiment, the light-emitting layer can emit blue light. For example, the light-emitting layer can emit blue light with a maximum emission wavelength of 400 nm to 490 nm. As another example, the light-emitting layer can emit blue light with a maximum emission wavelength of 430 nm to 480 nm.

[0125] In this specification, "(The light-emitting layer) contains one or more organometallic compounds" is also interpreted as "(The light-emitting layer) may contain one organometallic compound belonging to the category of chemical formula 1, or two or more different organometallic compounds belonging to the category of chemical formula 1."

[0126] For example, the light-emitting layer may contain only compound 1 as the organometallic compound. In this case, compound 1 may be present in the light-emitting layer of the organic light-emitting element. Alternatively, the light-emitting layer may contain both compound 1 and compound 2 as the organometallic compound.

[0127] [Explanation related to Figure 1] Figure 1 schematically shows a cross-sectional view of an organic light-emitting element 10 according to one embodiment. The structure and manufacturing method of the organic light-emitting element according to one embodiment will be described below with reference to Figure 1.

[0128] The organic light-emitting element 10 in Figure 1 includes a first electrode 11, a second electrode 19 facing the first electrode 11, and an organic layer 15 disposed between the first electrode 11 and the second electrode 19.

[0129] The organic layer 15 includes a light-emitting layer, a hole transport region is located between the first electrode 11 and the light-emitting layer, and an electron transport region is located between the light-emitting layer and the second electrode 19.

[0130] A substrate may be further placed below the first electrode 11 or above the second electrode 19. While a substrate commonly used in organic light-emitting devices can be used as the substrate, a glass substrate or a transparent plastic substrate with excellent mechanical strength, thermal stability, transparency, surface smoothness, ease of handling, and water repellency can also be used.

[0131] [First electrode 11] The first electrode 11 is formed, for example, by providing the material for the first electrode on the upper part of the substrate using a vapor deposition method or a sputtering method. The first electrode 11 also serves as the anode. The material for the first electrode is selected from materials having a high work function so that hole injection is easily performed.

[0132] The first electrode 11 is a reflective electrode, a semi-permeable electrode, or a transmissive electrode. To form a transmissive first electrode 11, the material for the first electrode is selected from, but is not limited to, indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), zinc oxide (ZnO), and any combination thereof. Alternatively, to form a semi-permeable or reflective first electrode 110, the material for the first electrode is selected from, but is not limited to, magnesium (Mg), silver (Ag), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), and any combination thereof.

[0133] The first electrode 11 may have a single layer or a multilayer structure including two or more layers.

[0134] [Emitting layer 15] The light-emitting layer 15 may contain the organometallic compound.

[0135] [Explanation related to Figure 2] According to one embodiment, the organometallic compound in the light-emitting layer may be included as an emitter.

[0136] According to one embodiment, the light-emitting layer may further contain a host (hereinafter referred to as "host A," and host A is not identical to the organometallic compound). Host A is understood with reference to, but is not limited to, the host materials described later.

[0137] Referring to Figure 2, the energy transition in one embodiment is described as follows.

[0138] 25% of the singlet excitons are formed in host A in the light-emitting layer, and these singlet excitons are transferred to the organometallic compound via Foerster energy transfer (or Foerster resonance energy transfer: FRET). Additionally, 75% of the triplet excitons formed in host A in the light-emitting layer are transferred to the organometallic compound via Dexter energy transfer. Of these, at least a portion of the singlet energy of the organometallic compound is transferred to the triplet state via intersystem crossing (ISC), allowing the organometallic compound to emit phosphorescence. Furthermore, at least a portion of the triplet energy of the organometallic compound is transferred to the singlet state via reverse intersystem crossing (RISC), allowing the organometallic compound to emit delayed fluorescence (or thermally activated delayed fluorescence: TADF).

[0139] According to one embodiment, the proportion of the luminescent component emitted from the organometallic compound among the total luminescent components emitted from the luminescent layer is 80% or more, for example, 90% or more. For example, the proportion of the luminescent component emitted from the organometallic compound among the total luminescent components emitted from the luminescent layer is 95% or more.

[0140] Here, the organometallic compound emits phosphorescence or delayed fluorescence, while the host does not emit light.

[0141] According to one embodiment, when the light-emitting layer further contains host A in addition to the organometallic compound, the content of the organometallic compound is 50 parts by weight or less per 100 parts by weight of the light-emitting layer, for example, 30 parts by weight or less, and the content of host A in the light-emitting layer is 50 parts by weight or more per 100 parts by weight of the light-emitting layer, for example, 70 parts by weight or more, but is not limited thereto.

[0142] [Explanation related to Figure 3] According to one embodiment, the organometallic compound is used as a sensorizer, and the light-emitting layer may further include a fluorescent emitter.

[0143] According to one embodiment, the light-emitting layer may further include a host (hereinafter referred to as "host B," where host B is not the same as the organometallic compound and the fluorescent emitter) and a fluorescent emitter (hereinafter referred to as "fluorescent emitter B," where fluorescent emitter B is not the same as host B and the organometallic compound). Host B and fluorescent emitter B are understood with reference to, but are not limited to, the host material and fluorescent emitter material described later.

[0144] According to one embodiment, the proportion of the light-emitting component from the fluorescent emitter B to the total light-emitting components emitted from the light-emitting layer is 80% or more, for example, 90% or more (as another example, 95% or more). For example, the fluorescent emitter B can emit fluorescence. Furthermore, the host and the sensorizer do not emit light.

[0145] Referring to Figure 3, the energy transition in one embodiment is described as follows.

[0146] 75% of the triplet excitons formed in host B in the light-emitting layer are transferred to the organometallic compound via Dexter energy transitions, and the energy of the 25% of singlet excitons formed in host B is transferred to the singlet and triplet states of the organometallic compound. Of this, at least a portion of the energy transferred to the singlet state of the organometallic compound is transferred to the triplet state via ISC, and then the triplet energy of the organometallic compound is transferred to the fluorescent emitter B via FRET. In addition, at least a portion of the triplet energy of the organometallic compound is transferred to the singlet state via RISC and then transferred to the fluorescent emitter B.

[0147] This allows for the transfer of both singlet and triplet excitons generated in the light-emitting layer to the emitter, resulting in an organic light-emitting element with improved efficiency. Furthermore, since an organic light-emitting element with significantly reduced energy loss is obtained, the lifetime characteristics of the organic light-emitting element can also be improved.

[0148] According to one embodiment, the content of the organometallic compound in the light-emitting layer is selected within the range of 5% to 50% by weight, specifically within the range of 10% to 30% by weight. When the above range is satisfied, effective energy transfer in the light-emitting layer can be achieved, thereby realizing a highly efficient and long-life organic light-emitting element.

[0149] According to one embodiment, the content of the fluorescent emitter B in the light-emitting layer is selected from a range of 0.01% to 15% by weight, specifically from a range of 0.05% to 3% by weight, and is not limited thereto.

[0150] [Explanation related to Figure 4] According to one embodiment, the organometallic compound is used as a sensorizer, and the light-emitting layer may further include a delayed fluorescence emitter.

[0151] According to one embodiment, the light-emitting layer may further include a host (hereinafter referred to as "host C," where the host C is not the same as the organometallic compound and the fluorescent emitter) and a delayed fluorescent emitter (hereinafter referred to as "delayed fluorescent emitter C," where the delayed fluorescent emitter C is not the same as the host C and the organometallic compound). The host C and the delayed fluorescent emitter C are understood with reference to, but are not limited to, the host material and the delayed fluorescent emitter material described later.

[0152] According to one embodiment, the proportion of the light-emitting component from the delayed fluorescence emitter among the total light-emitting components emitted from the light-emitting layer is 80% or more, for example, 90% or more (as another example, 95% or more). For example, the delayed fluorescence emitter can emit delayed fluorescence. Furthermore, the host and the sensorizer do not emit light.

[0153] Referring to Figure 4, the energy transition in one embodiment is described as follows.

[0154] 75% of the triplet excitons formed in the host C in the light-emitting layer are transferred to the organometallic compound via Dexter energy transitions, and the energy of the 25% of singlet excitons formed in the host C is transferred to the singlet and triplet states of the organometallic compound. Of this, at least a portion of the energy transferred to the singlet state of the organometallic compound is transferred to the triplet state via ISC, and then the triplet energy of the organometallic compound is transferred to the delayed fluorescence emitter C via FRET. In addition, at least a portion of the triplet energy of the organometallic compound is transferred to the singlet state via RISC and then transferred to the delayed fluorescence emitter C.

[0155] This allows for the transfer of both singlet and triplet excitons generated in the light-emitting layer to the emitter, resulting in an organic light-emitting element with improved efficiency. Furthermore, since an organic light-emitting element with significantly reduced energy loss is obtained, the lifetime characteristics of the organic light-emitting element can also be improved.

[0156] According to one embodiment, the content of the organometallic compound in the light-emitting layer is selected within the range of 5% to 50% by weight, specifically within the range of 10% to 30% by weight. When the above range is satisfied, effective energy transfer in the light-emitting layer can be achieved, thereby realizing a highly efficient and long-life organic light-emitting element.

[0157] According to one embodiment, the content of the delayed fluorescence emitter C in the light-emitting layer is selected from a range of 0.01% to 15% by weight, specifically from a range of 0.05% to 3% by weight, and is not limited thereto.

[0158] [Host in the luminescent layer] According to one embodiment, the host does not contain metal atoms.

[0159] According to one embodiment, the host may contain at least one compound selected from fluorene-containing compounds, carbazole-containing compounds, dibenzofuran-containing compounds, dibenzothiophene-containing compounds, indenocarbazole-containing compounds, indolocarbazole-containing compounds, benzoflocarbazole-containing compounds, benzothienocarbazole-containing compounds, acridine-containing compounds, dihydroacridine-containing compounds, triindrobenzene-containing compounds, pyridine-containing compounds, pyrimidine-containing compounds, triazine-containing compounds, silicon-containing compounds, cyano group-containing compounds, phosphine oxide-containing compounds, sulfoxide-containing compounds, and sulfonyl-containing compounds.

[0160] For example, the host is a compound containing at least one carbazole ring and at least one cyano group, or a phosphine oxide-containing compound.

[0161] According to one embodiment, the host may consist of one type of host. When the host consists of one type of host, the one type of host is selected from a bipolar host, an electron-transporting host, and a hole-transporting host, which will be described later.

[0162] According to one embodiment, the host may be a mixture of two or more different hosts. For example, the host may include a hole-transporting host, an electron-transporting host, a bipolar host, or a combination thereof.

[0163] According to one embodiment, the host may be a mixture of an electron-transporting host and a hole-transporting host, a mixture of two different electron-transporting hosts, or a mixture of two different hole-transporting hosts. A description of the electron-transporting host and the hole-transporting host will be provided later.

[0164] According to one embodiment, the host may include an electron-transporting host containing at least one electron-transporting group, and a hole-transporting host that does not contain an electron-transporting group.

[0165] In this specification, electron-transporting groups are selected from cyano groups, π-electron-deficient nitrogen-containing cyclic groups, and groups represented by one of the following chemical formulas: [ka]

[0166] In the above chemical formula, *, *', and *'' are bonding sites with any adjacent atom.

[0167] According to one embodiment, the electron-transporting host in the light-emitting layer may include at least one of a cyano group and a π-electron-deficient nitrogen-containing cyclic group.

[0168] According to one embodiment, the electron-transporting host in the light-emitting layer may contain at least one cyano group.

[0169] According to one embodiment, the electron-transporting host in the light-emitting layer may include at least one cyano group and at least one π-electron-deficient nitrogen-containing cyclic group.

[0170] According to one embodiment, the hole-transporting host in the light-emitting layer includes hole-transporting groups but does not include electron-transporting groups.

[0171] In this specification, the hole transport group is a π-electron-rich C3-C 60 Selected from cyclic groups and groups represented by the HT- group in the following chemical formula: [ka]

[0172] In the above chemical formula, *, *', *'', and *''' are bonding sites with any adjacent atom.

[0173] According to one embodiment, the host comprises an electron-transporting host and a hole-transporting host, wherein the electron-transporting host comprises at least one π-electron-deficient nitrogen-free cyclic group and at least one electron-transporting group, and the hole-transporting host comprises at least one π-electron-deficient nitrogen-free cyclic group and does not contain an electron-transporting group.

[0174] In this specification, "π-electron deficient nitrogen-containing cyclic group" refers to a cyclic group having at least one *-N=*' group, such as imidazole group, pyrazole group, thiazole group, isothiazole group, oxazole group, isoxazole group, pyridine group, pyrazine group, pyridazine group, pyrimidine group, indazole group, purine group, quinoline group, isoquinoline group, benzoquinoline group, phthalazine group, naphthyridine group, quinoxaline group, and quinazoline group. Selected from cinnoline group, phenantholidine group, acridine group, phenanthroline group, phenazine group, benzimidazole group, isobenzothiazole group, benzoxazole group, isobenzoxazole group, triazole group, tetraazole group, oxadiazole group, triazine group, thiadiazole group, imidazopyridine group, imidazopyrimidine group, and azacarbazole group; and a condensed ring of two or more of the π-electron-deficient nitrogen-containing cyclic groups.

[0175] On the other hand, the π-electron-deficient nitrogen-free cyclic groups include benzene, heptalene, indene, naphthalene, azulene, indacene, acenaphthylene, fluorene, spirobifluorene, benzofluorene, dibenzofluorene, phenalene, phenanthrene, anthracene, fluorantene, triphenylene, pyrene, chrysene, naphthacene, picene, perylene, pentacene, hexacene, pentacene, rubicene, coronene, ovalene, pyrrole, and isoindole. The group is selected from, but is not limited to, a fused ring of two or more of the aforementioned π-electron-deficient nitrogen-free cyclic groups: a group, an indole group, a furan group, a thiophene group, a benzofuran group, a benzothiophene group, a benzocarbazole group, a dibenzocarbazole group, a dibenzofuran group, a dibenzothiophene group, a dibenzothiophenesulfone group, a carbazole group, a dibenzosilole group, an indenocarbazole group, an indolocarbazole group, a benzoflocarbazole group, a benzothienocarbazole group, and a triindrobenzene group; and two or more of the aforementioned π-electron-deficient nitrogen-free cyclic groups.

[0176] According to one embodiment, when the host is a mixture of an electron-transporting host and a hole-transporting host, the weight ratio of the electron-transporting host to the hole-transporting host is selected from a range of 1:9 to 9:1, for example, 2:8 to 8:2, as another example, 4:6 to 6:4, and as yet another example, 5:5. When the weight ratio of the electron-transporting host to the hole-transporting host satisfies the above range, a balance of hole and electron transport in the light-emitting layer can be achieved.

[0177] According to one embodiment, the bipolar host may include at least one electron-transporting group and at least one hole-transporting group.

[0178] According to one embodiment, the host comprises a first compound and a second compound, i) The first compound is a hole-transporting host, and the second compound is an electron-transporting host, ii) The first compound is an electron-transporting host, and the second compound is a hole-transporting host, iii) Whether the first compound and the second compound are bipolar hosts, iv) The first compound is a hole-transporting host, and the second compound is a bipolar host, v) The first compound is an electron-transporting host, and the second compound is a bipolar host, vi) The first compound is a bipolar host and the second compound is a hole-transporting host, or vii) The first compound is a bipolar host, and the second compound is an electron-transporting host.

[0179] The host may contain at least one of the following: TPBi, TBADN, ADN (also known as "DNA"), CBP, CDBP, TCP, mCP, compound H50, and compound H51: [ka]

[0180] Alternatively, the host may further contain a compound represented by the following chemical formula 301: [ka]

[0181] In the aforementioned chemical formula 301, Ar 111 and Ar 112 They are independent of each other, Phenylene group, naphthylene group, phenantrenylene group, and pyrenylene group; and A phenylene group, naphthylene group, phenantrenylene group, and pyrenylene group, selected from those substituted with one or more of the phenyl group, naphthyl group, and anthracenyl group.

[0182] In the aforementioned chemical formula 301, Ar 113 ~Ar 116 They are independent of each other, C1-C 10 Alkyl groups, phenyl groups, naphthyl groups, phenantrenyl groups, and pyrenyl groups; and A phenyl group, naphthyl group, phenantrenyl group, and pyrenyl group, selected from those substituted with one or more of the phenyl group, naphthyl group, and anthracenyl group.

[0183] In the aforementioned chemical formula 301, g, h, i, and j are independent integers between 0 and 4, for example, 0, 1, or 2.

[0184] In the aforementioned chemical formula 301, Ar 113 ~Ar 116 They are independent of each other, C1-C12 10 alkyl group; Phenyl group, naphthyl group, anthracenyl group, pyrenyl group, phenantrenyl group, and fluorenyl group; Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Phenyl groups, naphthyl groups, anthracenyl groups, pyrenyl groups, phenantrenyl groups, and fluorenyl groups substituted with one or more of the following: alkoxy groups, phenyl groups, naphthyl groups, anthracenyl groups, pyrenyl groups, phenantrenyl groups, and fluorenyl groups; and [ka] ; can be selected from, but is not limited to, those options.

[0185] Alternatively, the host may contain a compound represented by the following chemical formula 302: [ka]

[0186] In the aforementioned chemical formula 302, Ar 122 ~Ar 125 For a detailed explanation of the above chemical formula 301 Ar 113 Refer to the explanation for details.

[0187] In the aforementioned chemical formula 302, Ar 126 and Ar 127 These are independent of each other, C1-C 10 It is an alkyl group (for example, a methyl group, an ethyl group, or a propyl group).

[0188] In the aforementioned chemical formula 302, k and l are independent integers between 0 and 4. For example, k and l are 0, 1, or 2.

[0189] According to one embodiment, the host may contain at least one compound from the following compounds H1 to H31: [ka] [ka] [ka]

[0190] According to one embodiment, the host may consist of one type of compound. For example, the one type of compound may be arbitrarily selected from the first substance (hole-transporting host) and the second substance (electron-transporting host) as described above.

[0191] According to one embodiment, the host may comprise two or more compounds. For example, the host may comprise two or more different hole-transporting hosts, two or more different electron-transporting hosts, or a combination of one or more hole-transporting hosts and one or more electron-transporting hosts.

[0192] [Emitter in the light-emitting layer] The emitter is capable of emitting light.

[0193] According to one embodiment, the emitter may contain the organometallic compound.

[0194] In another embodiment, the emitter may be a fluorescent and / or delayed-fluorescence emitter that emits fluorescence and / or delayed fluorescence. This reduces the decay time (T) of the emitter. decay (E)) is less than 100 μs.

[0195] T decay (E) is a quartz substrate in which the host and emitter contained in the light-emitting layer are arranged in a weight ratio of 90:10. -7 This value was calculated from the TRPL (Time-Resolved Photoluminescence) spectrum at room temperature for a 40 nm thick film obtained by vacuum co-deposition under a Torr vacuum.

[0196] According to one embodiment, the emitter may contain four or more carbon ring groups or four or more heterocyclic groups.

[0197] According to one embodiment, the emitter is also a metal-free organic compound.

[0198] According to one embodiment, the emitter is also a compound represented by any one of the following chemical formulas 51 to 54: [ka]

[0199] [ka]

[0200] [ka]

[0201] [ka]

[0202] In the aforementioned chemical formulas 51 to 54, X 51 and X 52 These are N or B, independently of each other. Y 51 This is a single bond, O, S, Se, N(R) 501 ), B(R 501 ), C(R 501 )(R 502 ), or Si(R 501 )(R 502 ) and Y 52 This is a single bond, O, S, Se, N(R) 503 ), B(R 503 ), C(R 503 )(R 504 ), or Si(R 503 )(R 504 ) and Y 53 This is a single bond, O, S, Se, N(R) 505 ), B(R 505 ), C(R 505 )(R 506 ), or Si(R 505 )(R 506 ) and Y 54 This is a single bond, O, S, Se, N(R) 507 ), B(R 507 ), C(R 507 )(R 508 ), or Si(R 507 )(R 508 ) and R 51 ~R 65 and R 501 ~R 508 These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, and substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C10 cycloalkyl group, substituted or unsubstituted C1-C 10 heterocycloalkyl group, substituted or unsubstituted C3-C 10 cycloalkenyl group, substituted or unsubstituted C1-C 10 heterocycloalkenyl group, substituted or unsubstituted C6-C 60 aryl group, substituted or unsubstituted C7-C 60 alkylaryl group, substituted or unsubstituted C6-C 60 aryloxy group, substituted or unsubstituted C6-C 60 arylthio group, substituted or unsubstituted C1-C 60 heteroaryl group, substituted or unsubstituted C2-C 60 alkylheteroaryl group, substituted or unsubstituted C1-C 60 heteroaryloxy group, substituted or unsubstituted C1-C 60 heteroarylthio group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic hetero-condensed polycyclic group, -Si(Q1)(Q2)(Q3), -Ge(Q1)(Q2)(Q3), -C(Q1)(Q2)(Q3), -B(Q1)(Q2), -N(Q1)(Q2), -P(Q1)(Q2), -C(=O)(Q1), -S(=O)(Q1), -S(=O)2(Q1), -P(=O)(Q1)(Q2), or -P(=S)(Q1)(Q2), and R 51 ~R 65 and R 501 ~R 508 among which two or more adjacent ones are selectively bonded to each other to form a C5-C 30 carbocyclic group, or a C1-C 30 heterocyclic group, substituted or unsubstituted with at least one R5, the substituted C5-C 30 carbocyclic group, substituted C1-C 30 heterocyclic group, substituted C1-C 60 alkyl group, substituted C2-C 60 alkenyl group, substituted C2-C 60 alkynyl group, substituted C1-C 60An alkoxy group, a substituted C3-C 10 cycloalkyl group, a substituted C1-C 10 heterocycloalkyl group, a substituted C3-C 10 cycloalkenyl group, a substituted C2-C 10 heterocycloalkenyl group, a substituted C6-C 60 aryl group, a substituted C6-C 60 aryloxy group, a substituted C6-C 60 arylthio group, a substituted C1-C 60 heteroaryl group, a substituted C1-C 60 heteroaryloxy group, a substituted C1-C 60 heteroarylthio group, a substituted monovalent non-aromatic fused polycyclic group, and at least one of the substituents of the substituted monovalent non-aromatic hetero-fused polycyclic group is deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or its salt, C1-C 60 alkyl group, C2-C 60 alkenyl group, C2-C 60 alkynyl group, or C1-C 60 alkoxy group; deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or its salt, C3-C 10 cycloalkyl group, C1-C 10 heterocycloalkyl group, C3-C 10 cycloalkenyl group, C2-C 10 heterocycloalkenyl group, C6-C 60 aryl group, C6-C 60 aryloxy group, C6-C 60 arylthio group, C1-C 60 heteroaryl group, C1-C 60Heteroaryloxy group, C1-C 60 Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -Si(Q 11 )(Q 12 )(Q 13 ), -Ge(Q 11 )(Q 12 )(Q 13 ), -N(Q 14 )(Q 15 ), -B(Q 16 )(Q 17 ), -P(=O)(Q 18 )(Q 19 ), or any combination thereof, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, or C1-C 60 Alkoxy group; C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C2-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroarylthio groups, monovalent non-aromatic condensed polycyclic groups, or monovalent non-aromatic heterocondensed polycyclic groups; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10Heterocycloalkyl group, C3-C 10 Cycloalkenyl group, C2-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic hetero-condensed polycyclic group, -Si(Q 21 )(Q 22 )(Q 23 )、-Ge(Q 21 )(Q 22 )(Q 23 )、-N(Q 24 )(Q 25 )、-B(Q 26 )(Q 27 )、-P(=O)(Q 28 )(Q 29 )、or a C3-C 10 Cycloalkyl group, C1-C 10 Heterocycloalkyl group, C3-C 10 Cycloalkenyl group, C2-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, monovalent non-aromatic condensed polycyclic group, or monovalent non-aromatic hetero-condensed polycyclic group; or -Si(Q 31 )(Q 32 )(Q 33 )、-Ge(Q 31 )(Q 32 )(Q 33 )、-N(Q 34 )(Q 35 ) \、-B(Q 36 )(Q 37 )、or -P(=O)(Q 38 )(Q 39 ); where Said Q1 to Q9, Q 11~Q 19 Q 21 ~Q 29 and Q 31 ~Q 39 These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C2-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 It is a heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, or a substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group.

[0203] According to one embodiment, R 51 ~R 65 and R 501 ~R 508 For further explanation, please refer to the explanation for R1 above.

[0204] According to one embodiment, the emitter can be selected from condensed polycyclic compounds and styryl compounds.

[0205] According to one embodiment, the emitter may include one of the following cores: a naphthalene-containing core, a fluorene-containing core, a spirobifluorene-containing core, a benzofluorene-containing core, a dibenzofluorene-containing core, a phenanthrene-containing core, anthracene-containing core, a fluorantene-containing core, a triphenylene-containing core, a pyrene-containing core, a chrysene-containing core, a picene-containing core, a perylene-containing core, a pentacene-containing core, an indenoanthracene-containing core, a tetracene-containing core, a bisanthracene-containing core, and a core represented by the following chemical formulas 501-1 to 501-21: [ka] [ka]

[0206] Specifically, the emitter is represented by the following chemical formula 501: [ka]

[0207] In the aforementioned chemical formula 501, Ar 51 Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, sulfonic acid group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -Si(Q511 )(Q 512 )(Q 513 ), -Ge(Q 511 )(Q 512 )(Q 513 ), -C(Q 511 )(Q 512 )(Q 513 ), -B(Q 511 )(Q 512 ), -N(Q 511 )(Q 512 ), -P(Q 511 )(Q 512 ), -C(=O)(Q 511 ), -S(=O)(Q 511 ), -S(=O)2(Q 511 ), -P(=O)(Q 511 )(Q 512 ), -P(=S)(Q 511 )(Q 512 ), or any combination thereof, substituted or unsubstituted, naphthalene group, fluorene group, spirobifluorene group, benzofluorene group, dibenzofluorene group, phenanthrene group, anthracene group, fluorantene group, triphenylene group, pyrene group, chrysene group, picene group, perylene group, pentacene group, indenoanthracene group, tetracene group, bisanthracene group, or groups represented by the following chemical formulas 501-1 to 501-21, [ka] [ka]

[0208] L 511 ~L 514 These are C3-C, which are substituted or non-substituted, independently of each other. 10 Cycloalkylene group, substituted or unsubstituted C1-C 10 Heterocycloalkylene group, substituted or unsubstituted C3-C 10 Cycloalkenylene group, substituted or unsubstituted C1-C 10 Heterocycloalkenylene group, substituted or unsubstituted C6-C 60Arylene group, substituted or unsubstituted C1-C 60 Selected from heteroarylene groups, substituted or unsubstituted divalent non-aromatic condensed polycyclic groups, and substituted or unsubstituted divalent non-aromatic heterocondensed polycyclic groups, a511~a514 are independently selected from 0, 1, 2, and 3. R 511 ~R 513 These are C1-C, which are substituted or non-substituted, independently of each other. 60 Alkyl, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C7-C 60 Alkylaryl group, substituted or unsubstituted C1-C 60 Heteroaryl group, substituted or unsubstituted C2-C 60 Selected from alkyl heteroaryl groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, and substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic groups, Q 511 ~Q 513 These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C7-C 60 Alkylaryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C2-C 60 Alkyl heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, deuterium, -F, cyano group, C1-C 20 Alkyl groups, and C6-C 30 C1-C substituted with at least one selected from aryl groups 60 Alkyl groups, as well as deuterium, -F, cyano group, C1-C 20 Alkyl groups, and C6-C 30 C6-C substituted with at least one selected from aryl groups 60 Selected from aryl groups, n511 and n512 are independently selected from 0, 1, 2, 3, 4, 5, and 6.

[0209] For example, in the aforementioned chemical formula 51, the sum of n511 and n512 is 1 or greater, but is not limited to that.

[0210] For example, in the above chemical formula 51, R 511 and R 512 These are, independently of each other, a phenyl group, a biphenyl group, a terphenyl group, a naphthyl group, a fluorenyl group, a spirobifluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group, a phenantrenyl group, anthracenyl group, a pyrenyl group, a crisenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridadinyl group, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, a carbazole group, a triazinyl group, a dibenzofuranyl group, and a dibenzothiophenyl group; and Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 20 Alkyl alkyl group, C1-C 20At least one selected from alkoxy groups, phenyl groups, biphenyl groups, terphenyl groups, naphthyl groups, fluorenyl groups, spirobifluorenyl groups, benzofluorenyl groups, dibenzofluorenyl groups, phenantrenyl groups, anthracenyl groups, pyrenyl groups, chrysenyl groups, pyridinyl groups, pyrazinyl groups, pyrimidinyl groups, pyridadinyl groups, quinolinyl groups, isoquinolinyl groups, quinoxalinyl groups, quinazolinyl groups, carbazolyl groups, triazinyl groups, dibenzofuranyl groups, and dibenzothiophenyl groups. The group is selected from one of the following, which are substituted with another: phenyl group, biphenyl group, terphenyl group, naphthyl group, fluorenyl group, spirobifluorenyl group, benzofluorenyl group, dibenzofluorenyl group, phenantrenyl group, anthracenyl group, pyrenyl group, chrysenyl group, pyridinyl group, pyrazinyl group, pyrimidinyl group, pyridadinyl group, quinolinyl group, isoquinolinyl group, quinoxalinyl group, quinazolinyl group, carbazolyl group, triazinyl group, dibenzofuranyl group, and dibenzothiophenyl group.

[0211] In one embodiment, the emitter is selected from the following group FD1: [ka] [ka] [ka] [ka]

[0212] The maximum emission wavelength of the emitter's emission spectrum is 400 nm or more and 650 nm or less. For example, the maximum emission wavelength of the emitter's emission spectrum is 400 nm or more and 550 nm or less, 400 nm or more and 495 nm or less, or 450 nm or more and 495 nm or less, but is not limited to these. The emitter can emit blue light and green light, specifically blue light, but is not limited to these. The "maximum emission wavelength" refers to the wavelength at which the emission intensity is greatest, and is also called the "peak emission wavelength".

[0213] The content of the emitter in the light-emitting layer is selected from, but is not limited to, 0.01% by weight to 15% by weight.

[0214] The content of the host, the sensorizer, and the emitter in the light-emitting layer is such that the host is the largest and the emitter is the smallest, but is not limited to this.

[0215] The aforementioned organic light-emitting device can satisfy the following condition 1: <Condition 1> S1(H)>S1(S)≧S1(E) In the above condition 1, S1(H) is the lowest singlet excitation energy level of the host, S1(S) is the lowest excitation singlet energy level of the sensor, S1(E) is the lowest singlet excitation energy level of the emitter.

[0216] S1(H), S1(S), and S1(E) each have a host, sensor, or emitter on the quartz substrate. -7 These values ​​were calculated from the PL spectrum obtained for a 40 nm thick film acquired by vacuum co-deposition under a Torr vacuum.

[0217] If condition 1 is satisfied, the emitter can emit light, and an organic light-emitting element with improved efficiency can be provided.

[0218] For example, if condition 1 is satisfied, the emission ratio from the emitter in the organic light-emitting element is 85% or more. That is, if the above range is satisfied, then in the organic light-emitting element, only the emitter emits light substantially, and the exciplex and the sensorizer emit no light substantially.

[0219] After singlet and / or triplet excitons formed in the host are transferred to the sensorizer, the triplet excitons are converted back to singlet excitons in the sensorizer via reverse intersystem crossing (RISC), and then transferred to the emitter via Förster energy transfer (FRET). Since both singlet and triplet excitons from the host can be transferred to the emitter, the organic light-emitting device can have significantly improved lifetime and efficiency.

[0220] On the other hand, the host and the sensor can satisfy the following condition 2: <Condition 2> T1(H)≧T1(S) In the above condition 2, T1(H) is the lowest excitation triplet energy level of the host, T1(S) is the lowest excitation triplet energy level of the aforementioned sensor.

[0221] [Sensitizer in the luminescent layer] The aforementioned sensor may contain the organometallic compound.

[0222] According to one embodiment, the sensorizer may further contain a phosphorescent compound.

[0223] According to one embodiment, the phosphorescent compound may contain one or more metals.

[0224] According to one embodiment, the phosphorescent compound is one or more metals selected from transition metals (M 11 ) and organic ligand (L 11 ) includes, L 11 and M 11It can form one, two, three, or four cyclometalated rings.

[0225] According to one embodiment, the phosphorescent compound may be represented by the following chemical formula 101.

[0226] [ka] In the aforementioned chemical formula 101, M 11 It is a transition metal, L 11 It is a ligand represented by one of the following chemical formulas 1-1 to 1-4, L 12 It is a monodentate or bidentate ligand, n11 is 1, n12 is selected from 0, 1, and 2. [ka]

[0227] In the above chemical formulas 1-1 to 1-4, A1-A4 are independent of each other, and are either substituted or non-substituted C5-C. 30 Carbon ring group, substituted or unsubstituted C1-C 30 Selected from heterocyclic and acyclic groups, Y 11 ~Y 14 These are, independently of each other, chemical bonds, O, S, N(R) 91 ), B(R 91 ), P(R 91 ), or C(R 91 )(R 92 ) and T1-T4 are independent of each other, with single bonds, double bonds, and *-N(R) 93 )-*', *-B(R 93 )-*'、*-P(R 93 )-*', *-C(R 93 )(R 94 )-*'、*-Si(R 93 )(R 94)-*'、*-Ge(R 93 )(R 94 )-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O)2-*', *-C(R 93 )=*', *=C(R 93 )-*', *-C(R 93 )=C(R 94 Selected from )-*', *-C(=S)-*', and *-C≡C-*', The substituted C5-C 30 Substituents of a carbocyclic group, substituted C1-C 30 Substituents of the heterocyclic group, and R 91 ~R 94 These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60Selected from heteroaryl groups, substituted or unsubstituted monovalent aromatic condensed polycyclic groups, substituted or unsubstituted monovalent aromatic heterocondensed polycyclic groups, substituted or unsubstituted monovalent non-aromatic condensed polycyclic groups, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic groups, -Si(Q1)(Q2)(Q3), -Ge(Q1)(Q2)(Q3), -C(Q1)(Q2)(Q3), -B(Q1)(Q2), -N(Q1)(Q2), -P(Q1)(Q2), -C(=O)(Q1), -S(=O)(Q1), -S(=O)2(Q1), -P(=O)(Q1)(Q2), and -P(=S)(Q1)(Q2), but the substituted C5-C 30 Substituents of the carbon ring group, and substituted C1-C 30 The substituents on the heterocyclic group are not hydrogen, *1, *2, *3 and *4 are M 11 It is a combined site with, Q1-Q3 are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, and C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C7-C 60 Alkylaryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C2-C 60 Alkyl heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroarylthio group, monovalent aromatic condensed polycyclic group, monovalent aromatic heterocondensed polycyclic group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, deuterium, -F, cyano group, C1-C 60 Alkyl groups, and C6-C 60C1-C substituted with at least one selected from aryl groups 60 Alkyl groups, as well as deuterium, -F, cyano group, C1-C 60 Alkyl groups, and C6-C 60 C6-C substituted with at least one selected from aryl groups 60 Selected from aryl groups.

[0228] According to one embodiment, the transition metal may be platinum (Pt), palladium (Pd), gold (Au), iridium (Ir), osmium (Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium (Tb), thulium (Tm), or rhodium (Rh).

[0229] According to one embodiment, the sensorizer may further contain a delayed fluorescent compound.

[0230] According to one embodiment, the delayed fluorescent compound may be represented by the following chemical formula 101 or 102.

[0231] [ka]

[0232] In the aforementioned chemical formulas 101 and 102, A 21 It is an acceptor group, D 21 is a donor group, m21 is 1, 2, or 3, and n21 is 1, 2, or 3. In the aforementioned chemical formula 101, the sum of n21 and m21 is 5 or less, and in the aforementioned chemical formula 102, the sum of n21 and m21 is 6 or less. R 201 C1-C5 is composed of hydrogen, deuterium, -F, -Cl, -Br, -I, -SF5, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, and substituted or unsubstituted C1-C5. 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C7-C 60 Alkylaryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 Heteroaryl group, substituted or unsubstituted C2-C 60 Alkyl heteroaryl group, substituted or unsubstituted C1-C 60 Heteroaryloxy group, substituted or unsubstituted C1-C 60 A heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, selected from -Si(Q1)(Q2)(Q3), -Ge(Q1)(Q2)(Q3), -C(Q1)(Q2)(Q3), -B(Q1)(Q2), -N(Q1)(Q2), -P(Q1)(Q2), -C(=O)(Q1), -S(=O)(Q1), -S(=O)2(Q1), -P(=O)(Q1)(Q2), and -P(=S)(Q1)(Q2), with multiple R 201 These selectively combine with each other, forming substituted or unsubstituted C5-C 30 A carbon ring group, or a substituted or unsubstituted C1-C 30 It can form a heterocyclic group, Q1-Q3 are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazino group, hydrazono group, and C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60Alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C7-C 60 Alkylaryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C2-C 60 Alkyl heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroarylthio group, monovalent aromatic condensed polycyclic group, monovalent aromatic heterocondensed polycyclic group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, deuterium, -F, cyano group, C1-C 60 Alkyl groups, and C6-C 60 C1-C substituted with at least one selected from aryl groups 60 Alkyl groups, as well as deuterium, -F, cyano group, C1-C 60 Alkyl groups, and C6-C 60 C6-C substituted with at least one selected from aryl groups 60 Selected from aryl groups.

[0233] According to one embodiment, in the chemical formulas 101 and 102, D 21 It is a substituted or unsubstituted π-electron-deficient nitrogen-free cyclic group.

[0234] Specifically, the π-electron-deficient nitrogen-free cyclic groups are benzene, heptalene, indene, naphthalene, azulene, indacene, acenaphthylene, fluorene, spirobifluorene, benzofluorene, dibenzofluorene, phenalene, phenanthrene, anthracene, fluorantene, triphenylene, pyrene, chrysene, naphthacene, picene, perylene, pentacene, hexacene, pentacene, rubicene, coronene, ovalene, pyrrole, and isoindo. A fused ring of two or more of the aforementioned π-electron-deficient nitrogen-free cyclic groups is selected from, but is not limited to, a chlorofluorobenzene group, an indole group, a furan group, a thiophene group, a benzofuran group, a benzothiophene group, a benzocarbazole group, a dibenzocarbazole group, a dibenzofuran group, a dibenzothiophene group, a dibenzothiophenesulfone group, a carbazole group, a dibenzosilole group, an indenocarbazole group, an indolocarbazole group, a benzoflocarbazole group, a benzothienocarbazole group, and a triindrobenzene group; and a fused ring of two or more of the aforementioned π-electron-deficient nitrogen-free cyclic groups.

[0235] According to one embodiment, in the chemical formulas 101 and 102, A 21 -F, cyano group, π-electron deficient nitrogen-containing cyclic group; -C1-C substituted with at least one selected from F and cyano groups. 60 an alkyl group, a π-electron-deficient nitrogen-containing cyclic group, and a π-electron-deficient nitrogen-free cyclic group; and Deuterium, C1-C 60 A π-electron-deficient nitrogen-containing cyclic group is selected from an alkyl group, a π-electron-deficient nitrogen-containing cyclic group, and a π-electron-deficient nitrogen-free cyclic group, which is substituted with at least one of these.

[0236] Specifically, the π-electron-deficient nitrogen-free cyclic group is as described above.

[0237] Specifically, the π-electron-deficient nitrogen-containing cyclic group is a cyclic group having at least one *-N=*' group, for example, an imidazole group, pyrazole group, thiazole group, isothiazole group, oxazole group, isoxazole group, pyridine group, pyrazine group, pyridazine group, pyrimidine group, indazole group, purine group, quinoline group, isoquinoline group, benzoquinoline group, phthalazine group, naphthyridine group, quinoxaline group, quinazoline group, sinnoline group, Selected from: phenanthridine group, acridine group, phenanthroline group, phenazine group, benzimidazole group, isobenzothiazole group, benzoxazole group, isobenzoxazole group, triazole group, tetraazole group, oxadiazole group, triazine group, thiadiazole group, imidazopyridine group, imidazopyrimidine group, azacarbazole group, and benzimidazole group; and a condensed ring of two or more of the π-electron-deficient nitrogen-containing cyclic groups.

[0238] According to one embodiment, the content of the sensor in the organic layer is greater than the content of the emitter. For example, the volume ratio of the sensor to the emitter is 30:0.1 to 10:3, or 10:0.1 to 20:5. As another example, the weight ratio of the sensor to the emitter is 10:0.1 to 20:5. On the other hand, the volume ratio of the host to the sensor in the organic layer is 60:40 to 95:5, or 70:30 to 90:10. Alternatively, the weight ratio of the host to the sensor is selected within the range of 60:40 to 95:5. By satisfying the above-described content ranges, the organic light-emitting element can have improved luminous efficiency and / or lifetime characteristics.

[0239] Figure 1 schematically shows a cross-sectional view of an organic light-emitting element 10 according to one embodiment of the present invention. The structure and manufacturing method of the organic light-emitting element according to one embodiment of the present invention will be described below with reference to Figure 1. The organic light-emitting element 10 has a structure in which a first electrode 11, an organic layer 15, and a second electrode 19 are stacked in order.

[0240] A substrate may be further placed below the first electrode 11 or above the second electrode 19. While a substrate commonly used in organic light-emitting devices can be used as the substrate, a glass substrate or a transparent plastic substrate with excellent mechanical strength, thermal stability, transparency, surface smoothness, ease of handling, and water repellency can also be used.

[0241] The first electrode 11 is formed, for example, by providing a material for the first electrode on the upper part of a substrate using a vapor deposition method or a sputtering method. The first electrode 11 is also the anode. The material for the first electrode is selected from materials having a high work function so that hole injection is easy. The first electrode 11 is a reflective electrode, a semi-transmissive electrode, or a transmissive electrode. As the material for the first electrode, indium tin oxide (ITO), indium zinc oxide (IZO), tin oxide (SnO2), zinc oxide (ZnO), etc. can be used. Alternatively, metals such as magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), and magnesium-silver (Mg-Ag) can be used.

[0242] The first electrode 11 may have a single layer or a multilayer structure including two or more layers. For example, the first electrode 11 may have a three-layer structure of ITO / Ag / ITO, but is not limited to this.

[0243] An organic layer 15 is placed on top of the first electrode 11.

[0244] The organic layer 15 includes a hole transport region, an emission layer, and an electron transport region.

[0245] The hole transport region is located between the first electrode 11 and the light-emitting layer.

[0246] The hole transport region may include a hole injection layer, a hole transport layer, an electron blocking layer, a buffer layer, or any combination thereof.

[0247] The hole transport region may consist only of a hole injection layer, or only of a hole transport layer. Alternatively, the hole transport region may have a structure of hole injection layer / hole transport layer or hole injection layer / hole transport layer / electron blocking layer, stacked sequentially from the first electrode 11.

[0248] If the hole transport region includes a hole injection layer, the hole injection layer (HIL) is formed on top of the first electrode 11 using various methods such as vacuum deposition, spin coating, casting, and LB (Langmuir-Blodgett) method.

[0249] When forming a hole injection layer by vacuum deposition, the deposition conditions vary depending on the compound used as the hole injection layer material, the desired structure of the hole injection layer, and its thermal properties. For example, the deposition temperature is approximately 100°C to 500°C, and the vacuum level is approximately 10°C. -8 torr~approximately 10 -3 Torr is selected within the range of approximately 0.01 Å / sec to approximately 100 Å / sec, but is not limited to these ranges.

[0250] When forming a hole injection layer by spin coating, the coating conditions vary depending on the compound used as the hole injection layer material, the desired structure of the hole injection layer, and its thermal properties. However, the coating speed is typically selected between approximately 2,000 rpm and 5,000 rpm, and the heat treatment temperature for solvent removal after coating is typically between approximately 80°C and 200°C, although these are not the only possible conditions.

[0251] The formation conditions for the hole transport layer and the electron blocking layer refer to the formation conditions for the hole injection layer.

[0252] The hole transport region may include, for example, at least one of the following: m-MTDATA, TDATA, 2-TNATA, NPB, β-NPB, TPD, Spiro-TPD, Spiro-NPB, methylated NPB, TAPC, HMTPD, 4,4',4”-tris(N-carbazolyl)triphenylamine (TCTA), polyaniline / dodecylbenzenesulfonic acid (PANI / DBSA), poly(3,4-ethylenedioxythiophene) / poly(4-styrenesulfonate) (PEDOT / PSS), polyaniline / camphorsulfonic acid (PANI / CSA), polyaniline / poly(4-styrenesulfonate) (PANI / PSS), a compound represented by the following chemical formula 201, and a compound represented by the following chemical formula 202: [ka]

[0253] [ka]

[0254] [ka]

[0255] In the aforementioned chemical formula 201, Ar 101 and Ar 102 They are independent of each other, Phenylene group, pentarenylene group, indenylene group, naphthylene group, azurenylene group, heptarenylene group, acenaphthylene group, fluorenylene group, phenarenylene group, phenantrenylene group, anthracenylene group, fluoranthenylene group, triphenylenylene group, pyrenylene group, chrysenyrene group, naphthacenylene group, picenylene group, perillenylene group, or pentacenylene group; or Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C1-C 60Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group, C3-C 10 Cycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkyl groups, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Phenylene, pentarenylene, indenylene, naphthylene, azurenylene, heptarenylene, acenaphthylene, fluorenylene, phenalenylene, phenantrenylene, anthracenylene, fluoranthenylene, triphenylenylene, pyrenylene, chrysenyrenylene, naphthracenylene, picenylene, perylenenylene, or pentacenylene groups, substituted with heteroaryl groups, monovalent nonaromatic condensed polycyclic groups, monovalent nonaromatic heterocondensed polycyclic groups, or any combination thereof.

[0256] In the aforementioned chemical formula 201, xa and xb are independent integers between 0 and 5, or 0, 1, or 2. For example, xa is 1 and xb is 0, but is not limited to that.

[0257] In the above chemical formulas 201 and 202, the R 101 ~R 108 , R 111 ~R 119 and R 121 ~R 124 They are independent of each other, Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C1-C 10 Alkyl groups (e.g., methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, etc.), or C1-C 10Alkoxy groups (e.g., methoxy group, ethoxy group, propoxy group, butoxy group, pentoxy group, etc.); C1-C substituted with deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, sulfonic acid or its salt, phosphoric acid or its salt, or any combination thereof. 10 Alkyl or C1-C 10 Alkoxy group; Phenyl group, naphthyl group, anthracenyl group, fluorenyl group, or pyrenyl group; or Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C1-C 10 Alkyl alkyl group, C1-C 10 A phenyl, naphthyl, anthracenyl, fluorenyl, or pyrenyl group substituted with an alkoxy group or any combination thereof; but not limited to these.

[0258] In the above chemical formula 201, R 109 teeth, Phenyl group, naphthyl group, anthracenyl group, or pyridinyl group; or Deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxylic acid or its salt, sulfonic acid or its salt, phosphoric acid or its salt, C1-C 20 Alkyl alkyl group, C1-C 20 A phenyl group, naphthyl group, anthracenyl group, or pyridinyl group substituted with an alkoxy group, a phenyl group, a naphthyl group, a naphthyl group, an anthracenyl group, a pyridinyl group, or any combination thereof;

[0259] According to one embodiment, the compound represented by chemical formula 201 is represented by the following chemical formula 201A, but is not limited thereto: [ka]

[0260] In the aforementioned chemical formula 201A, R 101 , R 111 , R 112 and R 109 For a detailed explanation, please refer to the section mentioned above.

[0261] For example, the compounds represented by chemical formula 201 and chemical formula 202 include, but are not limited to, the following compounds HT1 to HT20: [ka] [ka] [ka]

[0262] The thickness of the hole transport region is approximately 100 Å to approximately 10,000 Å, for example, approximately 100 Å to approximately 1,000 Å. If the hole transport region includes at least one of the hole injection layer and the hole transport layer, the thickness of the hole injection layer is approximately 100 Å to approximately 10,000 Å, for example, approximately 100 Å to approximately 1,000 Å, and the thickness of the hole transport layer is approximately 50 Å to approximately 2,000 Å, for example, approximately 100 Å to approximately 1,500 Å. When the thicknesses of the hole transport region, the hole injection layer, and the hole transport layer satisfy the above-described ranges, the hole transport characteristics to be satisfied can be obtained without a substantial increase in driving voltage.

[0263] The hole transport region may further contain, in addition to the aforementioned substances, charge-generating materials to improve conductivity. The charge-generating materials are uniformly or non-uniformly dispersed within the hole transport region.

[0264] The charge-generating substance is, for example, a p-type dopant. The p-type dopant is, but is not limited to, one of a quinone derivative, a metal oxide, and a cyano group-containing compound. For example, non-restrictive examples of the p-type dopant include, but is not limited to, quinone derivatives such as tetracyanoquinone dimethane (TCNQ) and 2,3,5,6-tetrafluoro-tetracyano-1,4-benzoquinone dimethane (F4-TCNQ), metal oxides such as tungsten oxide and molybdenum oxide, and cyano group-containing compounds such as the compounds HT-D1 and F12 listed below. [ka]

[0265] The hole transport region may further include a buffer layer.

[0266] The buffer layer can compensate for the optical resonance distance due to the wavelength of light emitted from the light-emitting layer, thereby increasing efficiency.

[0267] An emissive layer (EML) can be formed on top of the hole transport region using methods such as vacuum deposition, spin coating, casting, or LB. When forming the emissive layer by vacuum deposition or spin coating, the deposition and coating conditions vary depending on the compound used, but are generally selected within approximately the same range as those used for forming the hole injection layer.

[0268] On the other hand, if the hole transport region includes an electron blocking layer, the material of the electron blocking layer is selected from, but is not limited to, materials usable in the hole transport region as described above and host materials described later. For example, if the hole transport region includes an electron blocking layer, mCP described later can be used as the material of the electron blocking layer.

[0269] If the organic light-emitting element is a full-color organic light-emitting element, the light-emitting layer may be patterned with a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer. Alternatively, the light-emitting layer may have a structure in which a red light-emitting layer, a green light-emitting layer, and / or a blue light-emitting layer are laminated, allowing it to emit white light, and various other modifications are possible.

[0270] When the light-emitting layer contains a host and a dopant, the dopant content is usually selected in the range of about 0.01 parts by weight to about 15 parts by weight, based on about 100 parts by weight of host, but is not limited thereto.

[0271] The thickness of the light-emitting layer is approximately 100 Å to approximately 1,000 Å, for example, approximately 200 Å to approximately 600 Å. When the thickness of the light-emitting layer satisfies the above range, excellent light-emitting characteristics can be achieved without a substantial increase in driving voltage.

[0272] Next, an electron transport region is placed above the light-emitting layer.

[0273] The electron transport region may include a hole blocking layer, an electron transport layer, an electron injection layer, or any combination thereof.

[0274] For example, the electron transport region may have a hole blocking layer / electron transport layer / electron injection layer or an electron transport layer / electron injection layer structure, but is not limited to these. The electron transport layer may be a single layer or a multilayer structure containing two or more different materials.

[0275] The formation conditions for the hole blocking layer, electron transport layer, and electron injection layer in the electron transport region refer to the formation conditions for the hole injection layer.

[0276] If the electron transport region includes a hole blocking layer, the hole blocking layer includes, for example, at least one of the following BCP, Bphen, and BAlq, but is not limited to them. [ka]

[0277] The thickness of the hole blocking layer is approximately 20 Å to 1,000 Å, for example, approximately 30 Å to 300 Å. When the thickness of the hole blocking layer satisfies the above range, excellent hole blocking characteristics can be obtained without a substantial increase in driving voltage.

[0278] The electron transport layer may further include at least one of BCP, Bphen, Alq3, BAlq, TAZ, and NTAZ. [ka]

[0279] Alternatively, the electron transport layer may contain, but is not limited to, at least one of the following compounds ET1 to ET25. [ka] [ka] [ka]

[0280] The thickness of the electron transport layer is approximately 100 Å to 1,000 Å, for example, approximately 150 Å to 500 Å. When the thickness of the electron transport layer satisfies the above range, the desired electron transport characteristics can be obtained without a substantial increase in driving voltage.

[0281] The electron transport layer may further contain metal-containing materials in addition to the materials described above.

[0282] The metal-containing substance may also contain a Li complex. The Li complex may include, for example, the following compounds ET-D1 (lithium quinolate (LiQ)) or ET-D2. [ka]

[0283] Furthermore, the electron transport region includes an electron injection layer (EIL) that facilitates the injection of electrons from the second electrode 19.

[0284] The electron injection layer may contain LiF, NaCl, CsF, Li2O, BaO, or any combination thereof.

[0285] The thickness of the electron injection layer is approximately 1 Å to approximately 100 Å, for example, approximately 3 Å to approximately 90 Å. When the thickness of the electron injection layer satisfies the above range, the desired electron injection characteristics can be obtained without a substantial increase in the driving voltage.

[0286] [Second electrode 19] A second electrode 19 is provided on the upper part of the organic layer 15. The second electrode 19 also serves as the cathode. As the material for the second electrode 19, metals, alloys, conductive compounds, and combinations thereof with relatively low work functions can be used. Specifically, lithium (Li), magnesium (Mg), aluminum (Al), aluminum-lithium (Al-Li), calcium (Ca), magnesium-indium (Mg-In), magnesium-silver (Mg-Ag), etc., can be used as materials for forming the second electrode 19. Alternatively, various modifications are possible, such as forming a transmissive second electrode 19 using ITO or IZO to obtain a front-facing light-emitting element.

[0287] The organic light-emitting element described above has been explained with reference to Figure 1, but is not limited to that.

[0288] In another aspect, an electronic device including the organic light-emitting element is provided.

[0289] The electronic device may further include a thin-film transistor in addition to the organic light-emitting element described above. The thin-film transistor includes a source electrode, a drain electrode, and an active layer, and either one of the source electrode and the drain electrode may be electrically connected to either one of the first electrode and the second electrode of the organic light-emitting element.

[0290] In another aspect, a diagnostic composition comprising an organometallic compound represented by the chemical formula 1 is provided.

[0291] The diagnostic composition may contain one or more organometallic compounds represented by the chemical formula 1.

[0292] Since the organometallic compound represented by chemical formula 1 can provide high luminescence efficiency, the diagnostic composition containing the organometallic compound can have high diagnostic efficiency.

[0293] The diagnostic composition can be applied in a variety of ways, including to various diagnostic kits, diagnostic reagents, biosensors, and biomarkers.

[0294] In this specification, C1-C 60 Alkyl groups refer to monovalent groups of saturated aliphatic hydrocarbons having 1 to 60 carbon atoms, either linear or branched. Specific examples include methyl, ethyl, propyl, isobutyl, sec-butyl, tert-butyl, pentyl, iso-amyl, and hexyl groups. In this specification, C1-C 60 The alkylene group is the C1-C 60 This refers to a divalent group that has the same structure as an alkyl group.

[0295] In this specification, C1-C 60 Alkyl alkyl group, C1-C 20 Alkyl groups, and / or C1-C 10Examples of alkyl groups include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, isobutyl group, tert-butyl group, n-pentyl group, tert-pentyl group, neopentyl group, isopentyl group, sec-pentyl group, 3-pentyl group, sec-isopentyl group, n-hexyl group, isohexyl group, sec-hexyl group, tert-hexyl group, n-heptyl group, isoheptyl group, sec-heptyl group, tert-heptyl group, n-octyl group, isooctyl group, sec-octyl group, tert-octyl group, n-nonyl group, isononyl group, sec-nonyl group, tert-nonyl group, n-decyl group, isodecyl group, sec-decyl group, tert-decyl group, or any combination thereof. This includes mixed-substituted or unsubstituted methyl groups, ethyl groups, n-propyl groups, isopropyl groups, n-butyl groups, sec-butyl groups, isobutyl groups, tert-butyl groups, n-pentyl groups, tert-pentyl groups, neopentyl groups, isopentyl groups, sec-pentyl groups, 3-pentyl groups, sec-isopentyl groups, n-hexyl groups, isohexyl groups, sec-hexyl groups, tert-hexyl groups, n-heptyl groups, isoheptyl groups, sec-heptyl groups, tert-heptyl groups, n-octyl groups, isooctyl groups, sec-octyl groups, tert-octyl groups, n-nonyl groups, isononyl groups, sec-nonyl groups, tert-nonyl groups, n-decyl groups, isodecyl groups, sec-decyl groups, or tert-decyl groups. For example, the aforementioned chemical formula 9-33 is a branched C6 alkyl group and appears to be a tert-butyl group substituted with two methyl groups.

[0296] In this specification, C1-C 60 The alkoxy group is -OA 101 (Here, A 101 The above C1-C 60 This refers to a monovalent group having the chemical formula (which is an alkyl group), and specific examples include the methoxy group, ethoxy group, and isopropyloxy group.

[0297] In this specification, C1-C 60 Alkoxy group, C1-C 20 Alkoxy group, or C1-C10 Examples of alkoxy groups include methoxy, ethoxy, propoxy, butoxy, and pentoxy groups.

[0298] In this specification, C2-C 60 The alkenyl group is the C2-C 60 A structure having one or more carbon-carbon double bonds in the middle or terminal of an alkyl group, specific examples of which include ethenyl, propenyl, and butenyl groups. In this specification, C2-C 60 The alkenylene group is the C2-C 60 This refers to a divalent group that has the same structure as an alkenyl group.

[0299] In this specification, C2-C 60 The alkynyl group is the C2-C 60 It has a structure containing one or more carbon-carbon triple bonds in the middle or terminal of an alkyl group, and specific examples include an ethynyl group, a propynyl group, etc. In this specification, C2-C 60 The alkynylene group is the C2-C 60 This refers to a divalent group that has the same structure as an alkynyl group.

[0300] In this specification, C3-C 10 Cycloalkyl groups refer to monocyclic groups of monovalent saturated hydrocarbons having 3 to 10 carbon atoms, and specific examples include cyclopropyl groups, cyclobutyl groups, cyclopentyl groups, cyclohexyl groups, and cycloheptyl groups. In this specification, C3-C 10 The cycloalkylene group is the C3-C 10 This refers to a divalent group having the same structure as a cycloalkyl group.

[0301] In this specification, C3-C 10 Examples of cycloalkyl groups include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantanyl, bicyclo[1.1.1]pentyl, bicyclo[2.1.1]hexyl, bicyclo[2.2.1]heptyl (norbornyl), and bicyclo[2.2.2]octyl.

[0302] In this specification, C1-C 10 A heterocycloalkyl group refers to a monovalent monocyclic group having 1 to 10 carbon atoms, containing at least one heteroatom selected from N, O, P, Si, and S as a ring-forming atom. Specific examples include the tetrahydrofuranyl group and the tetrahydrothiophenyl group. In this specification, C1-C 10 The heterocycloalkylene group is the C1-C 10 This refers to a divalent group having the same structure as a heterocycloalkyl group.

[0303] In this specification, C1-C 10 Examples of heterocycloalkyl groups include siloranil, silinanil, tetrahydrofuranil, tetrahydro-2H-pyranil, and tetrahydrothiophenyl groups.

[0304] In this specification, C3-C 10 A cycloalkenyl group is a monovalent monocyclic group having 3 to 10 carbon atoms and containing at least one carbon-carbon double bond within the ring, but lacking aromaticity. Specific examples include cyclopentenyl, cyclohexenyl, and cycloheptenyl groups. In this specification, C3-C 10 The cycloalkenylene group is the C3-C 10 This refers to a divalent group that has the same structure as a cycloalkenyl group.

[0305] In this specification, C2-C 10 A heterocycloalkenyl group is a monovalent monocyclic group having 2 to 10 carbon atoms, containing at least one heteroatom selected from N, O, P, Si, and S as a ring-forming atom, and having at least one double bond within the ring. 10 Specific examples of heterocycloalkenyl groups include the 2,3-dihydrofuranyl group and the 2,3-dihydrothiophenyl group. In this specification, C2-C 10 The heterocycloalkenylene group is the C2-C 10 This refers to a divalent group that has the same structure as a heterocycloalkenyl group.

[0306] In this specification, C6-C 60 The aryl group refers to a monovalent group having a carbocyclic aromatic system with 6 to 60 carbon atoms, C6-C 60 The arylene group refers to a divalent group having a carbocyclic aromatic system with 6 to 60 carbon atoms. 60 Specific examples of aryl groups include phenyl, naphthyl, anthracenyl, phenantrenyl, pyrenyl, and chrysenyl groups. 60 Aryl group and C6-C 60 If the arylene group contains two or more rings, the two or more rings are fused together.

[0307] In this specification, C7-C 60 The alkylaryl group is at least one C1-C 60 C6-C substituted with alkyl group 60 It means an aryl group.

[0308] In this specification, C1-C 60 A heteroaryl group refers to a monovalent group having a cyclic aromatic system with 1 to 60 carbon atoms, containing at least one heteroatom selected from N, O, P, Si, and S as a ring-forming atom. 60 A heteroarylene group refers to a divalent group having a cyclic aromatic system with 1 to 60 carbon atoms, containing at least one heteroatom selected from N, O, P, and S as a ring-forming atom. 60 Specific examples of heteroaryl groups include pyridinyl, pyrimidinyl, pyrazinyl, pyridadinyl, triazinyl, quinolinyl, and isoquinolinyl groups. 60 Heteroaryl group and C1-C 60 If a heteroarylene group contains two or more rings, the two or more rings are fused to each other.

[0309] In this specification, C2-C 60 The alkyl heteroaryl group is at least one C1-C 60 C1-C substituted with alkyl group 60It means a heteroaryl group.

[0310] In this specification, C6-C 60 The aryloxy group is -OA 102 (Here, A 102 is the above C6-C 60 (It is an aryl group) and C6-C 60 The arylthio group is -SA 103 (Here, A 103 is the above C6-C 60 It indicates that it is an aryl group.

[0311] In this specification, C1-C 60 The heteroaryloxy group is -OA 104 (Here, A 104 The above C1-C 60 (It is a heteroaryl group) and C1-C 60 The heteroarylthio group is -SA 105 (Here, A 105 The above C1-C 60 It indicates a heteroaryl group.

[0312] In this specification, a monovalent non-aromatic condensed polycyclic group means a monovalent group (for example, having 8 to 60 carbon atoms) in which two or more rings are fused to each other, containing only carbon as the ring-forming atom, and having non-aromaticity as a whole molecule. Specific examples of the monovalent non-aromatic condensed polycyclic group include the fluorenyl group. In this specification, a divalent non-aromatic condensed polycyclic group means a divalent group having the same structure as the monovalent non-aromatic condensed polycyclic group.

[0313] In this specification, a monovalent non-aromatic heterocondensed polycyclic group means a monovalent group (for example, having 1 to 60 carbon atoms) in which two or more rings are fused to each other, and which contains heteroatoms selected from N, O, P, Si, and S as ring-forming atoms in addition to carbon, and the entire molecule is non-aromatic. The monovalent non-aromatic heterocondensed polycyclic group includes a carbazolyl group, etc. In this specification, a divalent non-aromatic heterocondensed polycyclic group means a divalent group having the same structure as the monovalent non-aromatic heterocondensed polycyclic group.

[0314] In this specification, C5-C 30 A carbocyclic group is a saturated or unsaturated cyclic group having only 5 to 30 carbon atoms as ring-forming atoms. 30 A carbocyclic group is either a monocyclic or polycyclic group. (at least one R 1a (Substituted or not substituted) C5-C 30 A "carbon ring group" is, for example, (at least one R 1a This includes adamantane groups (substituted or unsubstituted), norbornene groups, bicyclo[1.1.1]pentane groups, bicyclo[2.1.1]hexane groups, bicyclo[2.2.1]heptane groups (norbornane groups), bicyclo[2.2.2]octane groups, cyclopentane groups, cyclohexane groups, cyclohexene groups, benzene groups, naphthalene groups, anthracene groups, phenanthrene groups, triphenylene groups, pyrene groups, chrysene groups, 1,2,3,4-tetrahydronaphthalene groups, cyclopentadiene groups, silole groups, fluorene groups, etc.

[0315] In this specification, C1-C 30 A heterocyclic group is a saturated or unsaturated cyclic group having at least one heteroatom selected from N, O, P, Si, and S, in addition to 1 to 30 carbon atoms as ring-forming atoms. 30 A heterocyclic group is either a monocyclic or polycyclic group. (at least one R 1a (Substituted or not substituted) C1-C 30 A heterocyclic group is, for example, (at least one R 1aThiophene group (substituted or unsubstituted), furan group, pyrrole group, silole group, borol group, phosphole group, selenofen group, gelmol group, benzothiophene group, benzofuran group, indole group, indene group, benzosilole group, benzoborol group, benzophosphole group, benzoselenophene group, benzogermol group, dibenzothiophene group, dibenzofuran group, carbazole group, dibenzosilole group, dibenzoborol group, dibenzophosphole Group, dibenzoselenophen group, dibenzogermol group, dibenzothiophene 5-oxide group, 9H-fluoren-9-one group, dibenzothiophene 5,5-dioxide group, azabenzothiophene group, azabenzofuran group, azaindole group, azaindene group, azabenzosilol group, azabenzobolol group, azabenzophosphole group, azabenzoselenophene group, azabenzogermol group, azadibenzothiophene group, azadibenzofuran group, aza Carbazole group, azafluorene group, azadibenzosilol group, azadibenzobolol group, azadibenzophosphole group, azadibenzoselenophene group, azadibenzogermole group, azadibenzothiophene 5-oxide group, aza-9H-fluoren-9-one group, azadibenzothiophene 5,5-dioxide group, pyridine group, pyrimidine group, pyrazine group, pyridazine group, triazine group, quinoline group, isoquinoline group, quinoxaline group, quinazoline group This includes phenanthroline group, pyrazole group, imidazole group, triazole group, oxazole group, isoxazole group, thiazole group, isothiazole group, oxadiazole group, thiadiazole group, benzopyrazole group, benzimidazole group, benzoxazole group, benzothiazole group, benzoxadiazole group, benzothiadiazole group, 5,6,7,8-tetrahydroisoquinoline group, 5,6,7,8-tetrahydroquinoline group, etc.

[0316] In this specification, TMS represents *-Si(CH3)3 and TMG represents *-Ge(CH3)3.

[0317] The substituted C5-C 30 Carbocyclic group, substituted C1-C 30 Heterocyclic group, substituted C1-C60 Alkyl alkyl group, substituted C2-C 60 Alkenyl group, substituted C2-C 60 Alkynyl group, substituted C1-C 60 Alkoxy group, substituted C3-C 10 Cycloalkyl groups, substituted C1-C 10 Heterocycloalkyl groups, substituted C3-C 10 Cycloalkenyl group, substituted C1-C 10 Heterocycloalkenyl group, substituted C6-C 60 Aryl group, substituted C6-C 60 Aryloxy group, substituted C6-C 60 Arylthio group, substituted C1-C 60 heteroaryl group, substituted C1-C 60 Heteroaryloxy group, substituted C1-C 60 At least one of the heteroarylthio group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituent of the substituted monovalent non-aromatic heterocondensed polycyclic group is Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, or C1-C 60 Alkoxy group; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -Si(Q 11 )(Q 12 )(Q 13 ), -Ge(Q 11 )(Q 12 )(Q 13 ), -N(Q 14 )(Q 15 ), -B(Q 16 )(Q 17 ), -P(=O)(Q 18 )(Q 19 ), or any combination thereof, C1-C 60 Alkyl alkyl group, C2-C 60 Alkenyl group, C2-C 60 Alkynyl group, or C1-C 60 Alkoxy group; C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroarylthio groups, monovalent non-aromatic condensed polycyclic groups, or monovalent non-aromatic heterocondensed polycyclic groups; Deuterium, -F, -Cl, -Br, -I, -CD3, -CD2H, -CDH2, -CF3, -CF2H, -CFH2, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C1-C 60 Alkyl alkyl group, C2-C 60Alkenyl group, C2-C 60 Alkynyl group, C1-C 60 Alkoxy group, C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -Si(Q 21 )(Q 22 )(Q 23 ), -Ge(Q 21 )(Q 22 )(Q 23 ), -N(Q 24 )(Q 25 ), -B(Q 26 )(Q 27 ), -P(=O)(Q 28 )(Q 29 ), or any combination thereof, replaced by C3-C 10 Cycloalkyl groups, C1-C 10 Heterocycloalkyl groups, C3-C 10 Cycloalkenyl group, C1-C 10 Heterocycloalkenyl group, C6-C 60 Aryl group, C6-C 60 Aryloxy group, C6-C 60 Arylthio group, C1-C 60 Heteroaryl group, monovalent non-aromatic condensed polycyclic group, or monovalent non-aromatic heterocondensed polycyclic group; or -4(Q 31 )(Q 32 )(Q 33 ), -Ge(Q 31 )(Q 32 )(Q 33 ), -N(Q 34 )(Q 35 ), -B(Q 36)(Q 37 ), or -P(=O)(Q 38 )(Q 39 ); and The above Q1 to Q9, Q 11 ~Q 19 Q 21 ~Q 29 and Q 31 ~Q 39 These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C1-C 60 Alkyl alkyl groups, substituted or unsubstituted C2-C 60 Alkenyl group, substituted or unsubstituted C2-C 60 Alkynyl group, substituted or unsubstituted C1-C 60 Alkoxy group, substituted or unsubstituted C3-C 10 Cycloalkyl groups, substituted or unsubstituted C1-C 10 Heterocycloalkyl groups, substituted or unsubstituted C3-C 10 Cycloalkenyl group, substituted or unsubstituted C1-C 10 Heterocycloalkenyl group, substituted or unsubstituted C6-C 60 Aryl group, substituted or unsubstituted C6-C 60 Aryloxy group, substituted or unsubstituted C6-C 60 Arylthio group, substituted or unsubstituted C1-C 60 Heteroaryl group, C1-C 60 Heteroaryloxy group, C1-C 60 It is a heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, or a substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group.

[0318] The following describes in more detail a compound and an organic light-emitting element according to one embodiment of the present invention, with reference to synthesis examples and examples, but the present invention is not limited to the following synthesis examples and examples. In the following synthesis examples, the expression "'B' was used instead of 'A'" means that the amount of "B" used and the amount of "A" used are the same on a molar equivalent basis.

[0319] [Examples] Synthesis Example 1: Synthesis of Compound 2 [ka]

[0320] (1) Synthesis of compound 2-C Compound 2-A (7.0g, 20 mmol), Compound 2-B (7.31g, 36 mmol), Pd2(dba)3 (2.77g, 3 mmol), SPhos (2.49g, 6 mmol), and NaO t Bu (4.37 g, 45 mmol) was mixed with 150 ml of toluene and stirred at 110°C for 12 hours. After the reaction was complete, the mixture was cooled to room temperature, and the organic layer extracted with saturated ammonium chloride (NH4Cl) and methylene chloride (MC) was dried over anhydrous magnesium sulfate (MgSO4) and filtered, then concentrated under reduced pressure. The resulting product was purified by silica gel column chromatography to obtain 9.8 g (93% yield) of compound 2-C. HPLC-MS: 348.17[M+H] +

[0321] (2) Synthesis of compound 2-D Compound 2-C (9.8 g, 28 mmol) was dissolved in 280 ml of MC and cooled to 0°C. 1.0 M BBr3 (56 ml, 56 mmol) was then gradually added dropwise. The mixture was then stirred at room temperature for 2 hours. After the reaction was complete, the mixture was cooled to 0°C, and water was gradually added dropwise to quench the residual BBr3. The solution was neutralized with saturated sodium bicarbonate (NaHCO3), and the organic layer extracted with methylene chloride (MC) was dried over anhydrous magnesium sulfate (MgSO4) and filtered. The mixture was then concentrated under reduced pressure. The resulting product was purified by silica gel column chromatography to obtain 7.2 g (77% yield) of compound 2-D. HPLC-MS: 334.16 [M+H] +

[0322] (3) Synthesis of compound 2-E Compound 2-D (7.2 g, 22 mmol), 1-bromo-3-iodobenzene (6.72 g, 24 mmol), CuI (1.36 g, 7 mmol), picolinic acid (1.17 g, 9.50 mmol), and K3PO4 (12.60 g, 59 mmol) were mixed with 250 ml of DMSO and stirred at 100°C for 12 hours. After the reaction was complete, the mixture was cooled to room temperature, and the organic layer extracted with saturated ammonium chloride (NH4Cl) and ethyl acetate (EA) was dried over anhydrous magnesium sulfate (MgSO4) and filtered, then concentrated under reduced pressure. The resulting product was purified by silica gel column chromatography to obtain 9.2 g (79% yield) of compound 2-E. HPLC-MS: 490.08 [M+H] +

[0323] (4) Synthesis of compound 2-G Compound 2-E (5.98 g, 12 mmol), compound 2-F (6.35 g, 12 mmol), Pd2(dba)3 (1.12 g, 1 mmol), SPhos (1 g, 2 mmol), and NaOtBu (1.76 g, 18 mmol) were placed in a round-bottom flask. This mixture was then mixed with toluene (100 mL) and stirred under reflux at 110°C for 12 hours. After the reaction was complete, the temperature was lowered to room temperature, and then ethyl acetate and saturated ammonium chloride aqueous solution were added. The organic solution layer was extracted using ethyl acetate, dried over anhydrous MgSO4, and filtered. The filtrate was concentrated and purified by silica gel column chromatography to obtain 10.6 g (yield 93%) of compound 2-G. HPLC-MS: 927.68 [M+H] +

[0324] (5) Synthesis of compound 2-H Compound 2-G (10.6 g, 11 mmol) and p-toluenesulfonic acid (0.18 g, 2 mmol) were placed in a round-bottom flask, then mixed with triethyl orthoformate (80 mL), and the mixture was refluxed and stirred at 80°C for 12 hours. After the reaction was complete, the temperature was lowered to room temperature, and then ethyl acetate and saturated ammonium chloride aqueous solution were added. The organic solution layer was extracted using ethyl acetate, dried over anhydrous MgSO4, and filtered. The filtrate was concentrated and purified by silica gel column chromatography to obtain 10.5 g (yield 94%) of compound 2-H. HPLC-MS: 937.87[M+H] +

[0325] (6) Synthesis of Compound 2 Compound 2-H (9 g, 4.70 mmol), K2PtCl4 (4.06 g, 5.17 mmol), and NaOAc (2.41 g, 29 mmol) were placed in a round-bottom flask and then mixed with dioxane (160 mL). The mixture was refluxed at 100 °C for 12 hours and stirred. After the reaction was complete, the temperature was lowered to room temperature, and then ethyl acetate and saturated ammonium chloride aqueous solution were added. The organic solution layer was extracted using ethyl acetate, dried with anhydrous MgSO4, and filtered. The filtrate was concentrated and purified by silica gel column chromatography to obtain 1.7 g (yield 17%) of compound 2. HPLC-MS: 1130.62[M+H] +

[0326] Synthesis Example 2: Synthesis of Compound 1 [ka]

[0327] (1) Synthesis of compound 1-B Compound 1-B (yield 82%) was synthesized using the same method as the synthesis method for compound 1-G in Synthesis Example 1, except that compound 1-A was used instead of compound 1-F. HPLC-MS: 876.39[M+H] +

[0328] (2) Synthesis of compound 1-C Compound 1-C (95% yield) was synthesized using the same method as the synthesis of compound 1-H in Synthesis Example 1, except that compound 1-B was used instead of compound 1-G. HPLC-MS: 886.39[M+H] +

[0329] (3) Synthesis of Compound 1 Compound 1 (yield 16%) was synthesized using the same method as the synthesis method for Compound 1 in Synthesis Example 1, except that Compound 1-C was used instead of Compound 1-H. HPLC-MS: 1079.60[M+H] +

[0330] Synthesis Example 3: Synthesis of Compound 46 [ka]

[0331] (1) Synthesis of compound 46-C Compound 46-C (yield 89%) was synthesized using the same method as the synthesis method for compound 1-C in Synthesis Example 1, except that compound 46-A was used instead of compound 1-A. HPLC-MS: 364.20 [M+H] +

[0332] (2) Synthesis of compound 46-D Compound 46-D (80% yield) was synthesized using the same method as the synthesis method for compound 1-D in Synthesis Example 1, except that compound 46-C was used instead of compound 1-C. HPLC-MS: 350.18 [M+H] +

[0333] (3) Synthesis of compound 46-E Compound 46-E (yield 73%) was synthesized using the same method as the synthesis method for compound 1-E in Synthesis Example 1, except that compound 46-D was used instead of compound 1-D. HPLC-MS: 506.11[M+H] +

[0334] (4) Synthesis of compound 46-G Compound 46-G (yield 84%) was synthesized using the same method as the synthesis method for compound 1-G in Synthesis Example 1, except that compound 46-E was used instead of compound 1-E. HPLC-MS: 944.68 [M+H] +

[0335] (5) Synthesis of compound 46-H Except for using compound 46-G instead of compound 1-G, compound 46-H (yield 95%) was synthesized using the same method as the synthesis method for compound 1-H in Synthesis Example 1. HPLC-MS: 954.66[M+H] +

[0336] (6) Synthesis of compound 46 Compound 46 (yield 23%) was synthesized using the same method as the synthesis method for compound 1 in Synthesis Example 1, except that compound 46-H was used instead of compound 1-H. HPLC-MS: 1147.67[M+H] +

[0337] Synthesis Example 4: Synthesis of Compound 91 [ka]

[0338] (1) Synthesis of compound 91-C Compound 91-C (yield 62%) was synthesized using the same method as the synthesis method for compound 1-C in Synthesis Example 1, except that compound 91-A was used instead of compound 1-A. HPLC-MS: 460.32[M+H] +

[0339] (2) Synthesis of compound 91-D Compound 91-D (yield 88%) was synthesized using the same method as the synthesis method for compound 1-D in Synthesis Example 1, except that compound 91-C was used instead of compound 1-C. HPLC-MS: 447.31[M+H] +

[0340] (3) Synthesis of compound 91-E Compound 91-E (yield 75%) was synthesized using the same method as the synthesis method for compound 1-E in Synthesis Example 1, except that compound 91-D was used instead of compound 1-D. HPLC-MS: 601.25[M+H] +

[0341] (4) Synthesis of compound 91-G Compound 91-G (yield 79%) was synthesized using the same method as the synthesis method for compound 1-G in Synthesis Example 1, except that compound 91-E was used instead of compound 1-E. HPLC-MS: 1040.77[M+H] +

[0342] (5) Synthesis of compound 91-H Compound 91-H (yield 93%) was synthesized using the same method as the synthesis method for compound 1-H in Synthesis Example 1, except that compound 91-G was used instead of compound 1-G. HPLC-MS: 1050.75 [M+H] +

[0343] (6) Synthesis of compound 91 Compound 91 (yield 36%) was synthesized using the same method as the synthesis method for compound 1 in Synthesis Example 1, except that compound 91-H was used instead of compound 1-H. HPLC-MS: 1242.70[M+H] +

[0344] 2-F synthesis example [ka]

[0345] Synthesis of compound 2-F(C) 1-F(A) (15.0 g, 50 mmol), 1-F(B) (7.10 g, 50 mmol), and Cs2CO3 (65.6 g, 201 mmol) were mixed with 350 ml of DMF and stirred at 110°C for 24 hours. After the reaction was complete, the mixture was cooled to room temperature, and the organic layer extracted with saturated ammonium chloride (NH4Cl) and methylene chloride (MC) was dried over anhydrous magnesium sulfate (MgSO4) and filtered, then concentrated under reduced pressure. Silica gel column chromatography was performed on the resulting product to obtain 16.0 g (76% yield) of compound 2-F(C). HPLC-MS: 417.9[M+H] +

[0346] Synthesis of compound 2-F(E) Compounds 2-F(C) (16.0 g, 38 mmol), 1-F(D) (12.6 g, 38 mmol), Pd(PPh3)4 (4.41 g, 3.8 mmol), and K2CO3 (15.8 g, 114 mmol) were mixed with 380 ml of 1,4-dioxane:H2O (3:1) and stirred at 100°C for 12 hours. After the reaction was complete, the mixture was cooled to room temperature, and the organic layer extracted with saturated ammonium chloride (NH4Cl) and methylene chloride (MC) was dried over anhydrous magnesium sulfate (MgSO4) and filtered, then concentrated under reduced pressure. Silica gel column chromatography was performed on the resulting product to obtain 16.3 g (yield 86%) of compound 2-F(E). HPLC-MS: 497.17[M+H] +

[0347] Synthesis of compound 2-F(G) 1-F(E) (10 g, 20 mmol), 1-F(F) (4.31 g, 24 mmol), Pd2(dba)3 (1.85 g, 2.0 mmol), SPhos (1.74 mmol), and K2CO3 (4.2 g, 30 mmol) were mixed with 1,4-dioxane:H2O(3:1)200 and stirred at 100°C for 12 hours. After the reaction was complete, the mixture was cooled to room temperature, and the organic layer extracted with saturated ammonium chloride (NH4Cl) and methylene chloride (MC) was dried over anhydrous magnesium sulfate (MgSO4) and filtered, then concentrated under reduced pressure. Silica gel column chromatography was performed on the resulting product to obtain 9.0 g (yield 81%) of compound 2-F(G). HPLC-MS: 551.47 [M+H] +

[0348] Synthesis of compound 2-F Compound 2-F(G) (9.0 g, 14 mmol), Pd / C (10 wt% on carbon, 1.8 g), and ammonium formate (18.11 g, 361 mmol) were placed in a round-bottom flask and mixed with ethanol (180 mL). The mixture was refluxed at 80°C for 4 hours and stirred. After the reaction was complete, the temperature was lowered to room temperature, and after filtering with Celite, ethyl acetate and saturated ammonium chloride aqueous solution were added. The organic solution layer was extracted using ethyl acetate, dried with anhydrous MgSO4, and then filtered. The filtrate was concentrated and purified by silica gel column chromatography to obtain 7.8 g (yield 75%) of compound 2-F. HPLC-MS: 520.46 [M+H] +

[0349] 1-A synthesis example [ka]

[0350] Synthesis of compound 1-A(B) 1-F(E) (16.3g, 33 mmol), 2-A(A) (5.01g, 39 mmol), Pd2(dba)3 (3.01g, 3.3 mmol), SPhos (2.7g, 7 mmol), and K2CO3 (6.82g, 49 mmol) were mixed with 330 ml of 1,4-dioxane:H2O (3:1) and stirred at 100°C for 12 hours. After the reaction was complete, the mixture was cooled to room temperature, and the organic layer extracted with saturated ammonium chloride (NH4Cl) and methylene chloride (MC) was dried over anhydrous magnesium sulfate (MgSO4) and filtered, then concentrated under reduced pressure. Silica gel column chromatography was performed on the resulting product to obtain 13.0 g (yield 79%) of compound 1-A(B). HPLC-MS: 499.32[M+H] +

[0351] Synthesis of compound 1-A Compound 1-A(B) (7.0 g, 14 mmol), Pd / C (10 wt% on carbon, 1.4 g), and ammonium formate (14.08 g, 281 mmol) were placed in a round-bottom flask and mixed with ethanol (140 mL). The mixture was refluxed at 80°C for 4 hours and stirred. After the reaction was complete, the temperature was lowered to room temperature, and after filtering with Celite, ethyl acetate and saturated ammonium chloride aqueous solution were added. The organic solution layer was extracted using ethyl acetate, dried with anhydrous MgSO4, and then filtered. The filtrate was concentrated and purified by silica gel column chromatography to obtain 6.5 g (yield 80%) of compound 1-A. HPLC-MS: 470.43 [M+H] +

[0352] Example 1 The ITO glass substrate was cut to a size of 50mm x 50mm x 0.5mm, ultrasonically cleaned in acetone isopropyl alcohol and pure water for 15 minutes each, and then cleaned with UV ozone for 30 minutes.

[0353] Next, m-MTDATA was deposited on the ITO electrode (anode) on the glass substrate at a deposition rate of 1 Å / sec to form a 600 Å thick hole injection layer, and α-NPD was deposited on the hole injection layer at a deposition rate of 1 Å / sec to form a 250 Å thick hole transport layer.

[0354] Compound 1 (dopant) and CBP (host) were co-deposited onto the hole transport layer at deposition rates of 0.1 Å / sec and 1 Å / sec, respectively, to form a 400 Å thick light-emitting layer.

[0355] An organic light-emitting element having the structure ITO / m-MTDATA(600Å) / α-NPD(250Å) / CBP+compound 1(10 wt%)(400Å) / BAlq(50Å) / Alq3(300Å) / LiF(10Å) / Al(1,200Å) was fabricated by depositing BAlq on the light-emitting layer at a deposition rate of 1 Å / sec to form a 50 Å thick hole-blocking layer, depositing Alq3 on the hole-blocking layer to form a 300 Å thick electron-transport layer, depositing LiF on the electron-transport layer to form a 10 Å thick electron-injection layer, and then vacuum-depositing Al on the electron-injection layer to form a 1,200 Å thick second electrode (cathode). [ka]

[0356] Examples 2-4 and Comparative Examples 1-5 An organic light-emitting element was fabricated using the same method as in Example 1, except that the compounds listed in Table 2 were used instead of compound 1 as dopants during the formation of the light-emitting layer.

[0357] Evaluation Example 1: Characterization of Organic Light-Emitting Devices The full width at half maximum (FWHM) and maximum emission wavelength (λ) of the organic light-emitting devices manufactured in Examples 1-4 and Comparative Examples 1-5 are as follows: max ) and life characteristics (T 95The lifetime characteristics (T) were evaluated, and the results are shown in Table 2. A current / voltmeter (Keithley 2400) and a luminance meter (Minolta Cs-1000A) were used as evaluation equipment. 95 The time it took for the brightness to reach 95% of the initial brightness of 100% was measured and is listed in Table 2 below as a relative value to Comparative Example 1.

[0358] [Table 2] [ka]

[0359] Table 2 above shows that the organic light-emitting element according to one embodiment has a long lifespan and is suitable for deep blue emission. In particular, the organic light-emitting elements of Examples 1 to 4 have significantly better lifespan characteristics than the organic light-emitting elements of Comparative Examples 1 to 5.

[0360] Example 5 A glass substrate on which ITO electrodes were placed was cut to a size of 50mm x 50mm x 0.5mm, ultrasonically cleaned in acetone isopropyl alcohol and pure water for 15 minutes each, and then cleaned with UV ozone for 30 minutes.

[0361] Next, HAT-CN was deposited on the ITO electrode (anode) on the glass substrate to form a 100 Å thick hole injection layer, NPB was deposited on the hole injection layer to form a 500 Å thick first hole transport layer, TCTA was deposited on the first hole transport layer to form a 50 Å thick second hole transport layer, and mCP was deposited on the second hole transport layer to form a 50 Å thick electron blocking layer.

[0362] A 400 Å thick light-emitting layer was formed by co-depositing a first host (H1), a second host (H2), a sensorizer (compound 1), and an emitter (compound BD1-5) onto the electron blocking layer. In this process, the first host and the second host were mixed in a ratio of 60:40, and the amount of the sensorizer and emitter was adjusted to 15% by weight and 1% by weight, respectively, based on the total weight of the first host, second host, sensorizer, and emitter.

[0363] An organic light-emitting element was fabricated by first depositing DBFPO on the light-emitting layer to form a 100 Å thick hole-blocking layer, then co-depositing DBFPO and Liq in a 5:5 weight ratio on the hole-blocking layer to form a 300 Å thick electron-transport layer, then depositing Liq on the electron-transport layer to form a 10 Å thick electron-injection layer, and finally depositing Al on the electron-injection layer to form a 1,000 Å thick cathode. [ka]

[0364] Examples 6-8 and Comparative Examples 6-10 An organic light-emitting element was fabricated using the same method as in Example 5, except that the compounds listed in Table 3 below were used as the sensorizers during the formation of the light-emitting layer.

[0365] Evaluation Example 2: Characterization of Organic Light-Emitting Devices The maximum emission wavelength (λ) of each organic light-emitting device manufactured in Examples 5-8 and Comparative Examples 6-10. max ), external quantum efficiency (EQE) and lifetime characteristics (T 95 The lifetime characteristics (T) were evaluated, and the results are shown in Table 3. A current / voltmeter (Keithley 2400) and a luminance meter (Minolta Cs-1000A) were used as evaluation equipment. 95 The time it took for the brightness to reach 95% of the initial brightness of 100% was measured, and the relative values ​​to Comparative Example 6 are listed in Table 3 below.

[0366] [Table 3]

[0367] Table 3 above shows that the organic light-emitting element according to one embodiment has high external quantum efficiency, a long lifetime, and is suitable for deep blue emission. In particular, the organic light-emitting elements of Examples 5 to 8 have significantly better external quantum efficiency and lifetime characteristics compared to the organic light-emitting elements of Comparative Examples 6 to 10. [Explanation of symbols]

[0368] 10 Organic light-emitting devices 11 1st electrode 15 Organic layer 19 2nd electrode

Claims

1. Organometallic compounds represented by the following chemical formula 1: 【Chemistry 1】 In the aforementioned chemical formula 1, M １ It is a transition metal, L １１ This is a ligand represented by the following chemical formula 1-1, L １２ It is an organic ligand, n11 is 1, n12 is 0, 1, or 2. 【Chemistry 2】 In the above chemical formula 1-1, *1 to *4 are M, which are independent of each other. １ It is a combined site with, A １０ It is an N-containing heterocyclic group, A ２０ and A ３０ are, independently of each other, C ５ -C ３０ carbocyclic group and C １ -C ３０ heterocyclic group, and are selected from T １ This is a single bond, *-N(R １ )-*', *-B(R １ )-*', *-P(R １ )-*', *-C(R １ ) (Caution ２ )-*', *-Si(R １ ) (Caution ２ )-*', *-Ge(R １ ) (Caution ２ )-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ２ - *', *-C (R １ ) = C(R ２ ) - *', * - C (= S) - *', and * - C ≡ C - *' are selected, T ２ This is a single bond, *-N(R ３ )-*', *-B(R ３ )-*', *-P(R ３ )-*', *-C(R ３ ) (Caution ４ )-*', *-Si(R ３ ) (Caution ４ )-*', *-Ge(R ３ ) (Caution ４ )-*', *-S-*', *-Se-*', *-O-*', *-C(=O)-*', *-S(=O)-*', *-S(=O) ２ - *', *-C (R ３ ) = C(R ４ ) - *', * - C (= S) - *', and * - C ≡ C - *' are selected, X １１ is C(R １１ ) or N, X １２ is C(R １２ ) or N, X ２０ is C or N, X ３０ is C or N, X ２１ , X ２２ , X ３１ and X ３２ These are C or N, independently of each other. Ar １ This is a group with a molecular weight of 350 or more, represented by the following chemical formula 2. 【Transformation 3】 In the aforementioned chemical formula 2, E １ and E ５ Deuterium, -F, -Cl, -Br, -I, -SF ５ , hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C １ -C ６０ Alkyl, substituted or unsubstituted C ２ -C ６０ Alkenyl group, substituted or unsubstituted C ２ -C ６０ Alkynyl group, substituted or unsubstituted C １ -C ６０ alkoxy group, substituted or unsubstituted C ３ -C １０ Cycloalkyl groups, substituted or unsubstituted C １ -C １０ Heterocycloalkyl groups, substituted or unsubstituted C ３ -C １０ Cycloalkenyl group, substituted or unsubstituted C １ -C １０ Heterocycloalkenyl group, substituted or unsubstituted C ６ -C ６０ Aryl group, substituted or unsubstituted carbon ６ -C ６０ Aryloxy group, substituted or unsubstituted C ６ -C ６０ Arylthio group, substituted or unsubstituted C １ -C ６０ Heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q １ ) (Q ２ ), -Si(Q ３ ) (Q ４ ) (Q ５ ), -Ge(Q ３ ) (Q ４ ) (Q ５ ), -B (Q ６ ) (Q ７ ), or -P (=O) (Q ８ ) (Q ９ ) and E ２ to E ４ are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, -SF ５ , hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid group or its salt, substituted or unsubstituted C １ -C ６０ alkyl group, substituted or unsubstituted C ２ -C ６０ alkenyl group, substituted or unsubstituted C ２ -C ６０ alkynyl group, substituted or unsubstituted C １ -C ６０ alkoxy group, substituted or unsubstituted C ３ -C １０ cycloalkyl group, substituted or unsubstituted C １ -C １０ heterocycloalkyl group, substituted or unsubstituted C ３ -C １０ cycloalkenyl group, substituted or unsubstituted C １ -C １０ heterocycloalkenyl group, substituted or unsubstituted C ６ -C ６０ aryl group, substituted or unsubstituted C ６ -C ６０ aryloxy group, substituted or unsubstituted C ６ -C ６０ arylthio group, substituted or unsubstituted C １ -C ６０ heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic hetero-condensed polycyclic group, -N(Q １ )(Q ２ ), -Si(Q ３ )(Q ４ )(Q ５ ), -Ge(Q ３ )(Q ４ )(Q ５ ), -B(Q ６ )(Q ７ ), or -P(=O)(Q ８ )(Q ９ ), and * indicates a bonding site with an adjacent atom. Ar １ It has an asymmetric structure, R １１ and R １２ These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, -SF ５ , hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C １ -C ６０ Alkyl, substituted or unsubstituted C ２ -C ６０ Alkenyl group, substituted or unsubstituted C ２ -C ６０ Alkynyl group, substituted or unsubstituted C １ -C ６０ alkoxy group, substituted or unsubstituted C ３ -C １０ Cycloalkyl groups, substituted or unsubstituted C １ -C １０ Heterocycloalkyl groups, substituted or unsubstituted C ３ -C １０ Cycloalkenyl group, substituted or unsubstituted C １ -C １０ Heterocycloalkenyl group, substituted or unsubstituted C ６ -C ６０ Aryl group, substituted or unsubstituted carbon ６ -C ６０ Aryloxy group, substituted or unsubstituted C ６ -C ６０ Arylthio group, substituted or unsubstituted C １ -C ６０ Heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q １ ) (Q ２ ), -Si(Q ３ ) (Q ４ ) (Q ５ ), -Ge(Q ３ ) (Q ４ ) (Q ５ ), -B (Q ６ ) (Q ７ ), or -P (=O) (Q ８ ) (Q ９ ) and R １１ and R １２ Two or more adjacent elements are optionally joined to form at least one R １０ Substitute or non-substitute C ５ -C ３０ A carbon ring group, or at least one R １０ Substitute or non-substitute C １ -C ３０ It can form a heterocyclic group, R １ ~R ４ , R １０ , R ２０ , R ３０ , R ４１ and R ４４ These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, -SF ５ , hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C １ -C ６０ Alkyl, substituted or unsubstituted C ２ -C ６０ Alkenyl group, substituted or unsubstituted C ２ -C ６０ Alkynyl group, substituted or unsubstituted C １ -C ６０ alkoxy group, substituted or unsubstituted C ３ -C １０ Cycloalkyl groups, substituted or unsubstituted C １ -C １０ Heterocycloalkyl groups, substituted or unsubstituted C ３ -C １０ Cycloalkenyl group, substituted or unsubstituted C １ -C １０ Heterocycloalkenyl group, substituted or unsubstituted C ６ -C ６０ Aryl group, substituted or unsubstituted carbon ６ -C ６０ Aryloxy group, substituted or unsubstituted C ６ -C ６０ Arylthio group, substituted or unsubstituted C １ -C ６０ Heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q １ ) (Q ２ ), -Si(Q ３ ) (Q ４ ) (Q ５ ), -Ge(Q ３ ) (Q ４ ) (Q ５ ), -B (Q ６ ) (Q ７ ), or -P (=O) (Q ８ ) (Q ９ ) and R １ ~R ４ , R １０ , R ２０ , R ３０ , R ４１ and R ４４ Two or more adjacent elements are optionally joined to each other, resulting in a substitution or non-substitution of C. ５ -C ３０ A carbon ring group, or a substituted or unsubstituted C １ -C ３０ It can form a heterocyclic group, b 20 R ２０ Two or more of these elements selectively combine with each other to form a substituted or non-substituted C. ５ -C ３０ A carbon ring group, or a substituted or unsubstituted C １ -C ３０ It can form a heterocyclic group, b 30 R ３０ Two or more of these elements selectively combine with each other to form a substituted or non-substituted C. ５ -C ３０ A carbon ring group, or a substituted or unsubstituted C １ -C ３０ It can form a heterocyclic group, b20 and b30 are independently 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10. If b20 is 2 or more, then R is 2 or more. ２０ They may be the same or different from each other, and if b30 is 2 or more, then 2 or more R ３０ They may be the same or different from each other. R ４２ C is either substituted or non-substituted. １ -C ６０ It is an alkyl group, R ４２ Its molecular weight is 18 or more. R ４３ Deuterium, -F, -Cl, -Br, -I, -SF ５ , hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, substituted or unsubstituted C １ -C ６０ Alkyl, substituted or unsubstituted C ２ -C ６０ Alkenyl group, substituted or unsubstituted C ２ -C ６０ Alkynyl group, substituted or unsubstituted C １ -C ６０ alkoxy group, substituted or unsubstituted C ３ -C １０ Cycloalkyl groups, substituted or unsubstituted C １ -C １０ Heterocycloalkyl groups, substituted or unsubstituted C ３ -C １０ Cycloalkenyl group, substituted or unsubstituted C １ -C １０ Heterocycloalkenyl group, substituted or unsubstituted C ６ -C ６０ Aryl group, substituted or unsubstituted carbon ６ -C ６０ Aryloxy group, substituted or unsubstituted C ６ -C ６０ Arylthio group, substituted or unsubstituted C １ -C ６０ Heteroaryl group, substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, substituted or unsubstituted monovalent non-aromatic heterocondensed polycyclic group, -N(Q １ ) (Q ２ ), -Si(Q ３ ) (Q ４ ) (Q ５ ), -Ge(Q ３ ) (Q ４ ) (Q ５ ), -B (Q ６ ) (Q ７ ), or -P (=O) (Q ８ ) (Q ９ ) and R ４２ and R ４３ At least one of them has a molecular weight of 19 or more. The substituted C ５ -C ３０ Carbocyclic group, substituted C １ -C ３０ heterocyclic group, substituted C １ -C ６０ Alkyl alkyl group, substituted C ２ -C ６０ Alkenyl group, substituted C ２ -C ６０ Alkynyl group, substituted C １ -C ６０ Alkoxy group, substituted C ３ -C １０ Cycloalkyl groups, substituted C １ -C １０ Heterocycloalkyl groups, substituted C ３ -C １０ Cycloalkenyl group, substituted C １ -C １０ heterocycloalkenyl group, substituted C ６ -C ６０ Aryl group, substituted carbon ６ -C ６０ Aryloxy group, substituted C ６ -C ６０ Arylthio group, substituted C １ -C ６０ heteroaryl group, substituted C １ -C ６０ heteroaryloxy group, substituted C １ -C ６０ The substituents of the heteroarylthio group, the substituted monovalent non-aromatic condensed polycyclic group, and the substituted monovalent non-aromatic heterocondensed polycyclic group are Deuterium, -F, -Cl, -Br, -I, -CD ３ , -CD ２ H, -CDH ２ , -CF ３ , -CF ２ H, -CFH ２ hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C １ -C ６０ alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, or C １ -C ６０ Alkoxy group; Deuterium, -F, -Cl, -Br, -I, -CD ３ , -CD ２ H, -CDH ２ , -CF ３ , -CF ２ H, -CFH ２ hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ heteroaryl group, C １ -C ６０ Heteroaryloxy group, C １ -C ６０ Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q １１ ) (Q １２ ), -Si(Q １３ ) (Q １４ ) (Q １５ ), -Ge(Q １３ ) (Q １４ ) (Q １５ ), -B (Q １６ ) (Q １７ ), -P(=O)(Q １８ ) (Q １９ C, replaced by any combination thereof. １ -C ６０ alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, or C １ -C ６０ Alkoxy group; C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ heteroaryl group, C １ -C ６０ Heteroaryloxy group, C １ -C ６０ Heteroarylthio groups, monovalent non-aromatic condensed polycyclic groups, or monovalent non-aromatic heterocondensed polycyclic groups; Deuterium, -F, -Cl, -Br, -I, -CD ３ , -CD ２ H, -CDH ２ , -CF ３ , -CF ２ H, -CFH ２ hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C １ -C ６０ alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, C １ -C ６０ Alkoxy group, C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ Heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ２１ ) (Q ２２ ), -Si(Q ２３ ) (Q ２４ ) (Q ２５ ), -Ge(Q ２３ ) (Q ２４ ) (Q ２５ ), -B (Q ２６ ) (Q ２７ ), -P(=O)(Q ２８ ) (Q ２９ C, replaced by any combination thereof. ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ heteroaryl group, C １ -C ６０ Heteroaryloxy group, C １ -C ６０ Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, or monovalent non-aromatic heterocondensed polycyclic group; or -N(Q) ３１ ) (Q ３２ ), -Si(Q ３３ ) (Q ３４ ) (Q ３５ ), -Ge(Q ３３ ) (Q ３４ ) (Q ３５ ), -B (Q ３６ ) (Q ３７ ), or -P (=O) (Q ３８ ) (Q ３９ ); and The aforementioned Q １ ~Q ９ Q １１ ~Q １９ Q ２１ ~Q ２９ and Q ３１ ~Q ３９ These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C １ -C ６０ alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, C １ -C ６０ Alkoxy group, C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C １ -C ６０ C substituted with alkyl group ６ -C ６０ Aryl group, C ６ -C ６０ C substituted with an aryl group ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ heteroaryl group, C １ -C ６０ Heteroaryloxy group, C １ -C ６０ It is a heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, or a monovalent non-aromatic heterocondensed polycyclic group.

2. M １ The organometallic compound according to claim 1, wherein is Pt, Pd, or Au.

3. A １０ The organometallic compounds according to claim 1, selected independently from A10-1 to A10-20 below: 【Chemistry 4】 In the above chemical formulas A10-1 to A10-20, R １１ and R １２ The explanation relating to this is the same as in claim 1, R １３ ~R １６ The explanations relating to this are independent of each other and R in claim 1. １０ This is similar to the explanation regarding the above, *, *', and *'' are bonding sites with adjacent atoms, respectively.

4. A ２０ and A ３０ These are, independently of each other, a benzene group, a naphthalene group, anthracene group, a phenanthrene group, a triphenylene group, a pyrene group, a chrysene group, a cyclopentadiene group, a 1,2,3,4-tetrahydronaphthalene group, a furan group, a thiophene group, a silole group, an indene group, a fluorene group, an indole group, a carbazole group, a benzofuran group, a benzothiophene group, a benzothiophene group, a benzosilole group, azafluorene group, azacarbazole group, azadibenzofuran group, azadibenzothiophene group, azadibenzosilole group, azadibenzosilole group, a pyridine group, a pyrimidine group, a pyrazine group, a pyridazine group, a triazine group, a quinoline group, and The organometallic compound according to claim 1, wherein the group is a soquinoline group, a quinoxaline group, a quinazoline group, a phenanthroline group, a pyrrole group, a pyrazole group, an imidazole group, a triazole group, a tetrazole group, an oxazole group, an isoxazole group, a thiazole group, an isothiazole group, an oxadiazole group, a thiadiazole group, a benzopyrazole group, a benzimidazole group, an indazole group, a benzoxazole group, a benzothiazole group, a benzoxadiazole group, a benzothiadiazole group, a benzotriazole group, a diazaindene group, a triazaindene group, a 5,6,7,8-tetrahydroisoquinoline group, or a 5,6,7,8-tetrahydroquinoline group.

5. A ２０ The organometallic compound according to claim 1, selected from the following chemical formulas A20-1 to A20-13: 【Transformation 5】 In the above chemical formulas A20-1 to A20-13, X ２０ For further explanation, please refer to claim 1. Y ２１ is a single bond, O, S, N(R) ２６ ), C (R ２６ ) (Caution ２７ ), or Si (R ２６ ) (Caution ２７ ) and R ２１ ~R ２９ These are, independently of each other, R in claim 1 ２０ Refer to the explanation below. *, *', and *'' are bonding sites with adjacent atoms, respectively.

6. A ３０ The organometallic compound according to claim 1, selected from the following chemical formulas A30-1 to A30-12: 【Transformation 6】 In the above chemical formulas A30-1 to A30-12, X ３０ For further explanation, please refer to claim 1. Y ３１ is a single bond, O, S, N(R) ３７ ), C (R ３７ ) (Caution ３８ ), or Si (R ３７ ) (Caution ３８ ) and R ３１ ~R ３８ These are, independently of each other, R in claim 1 ３０ Refer to the explanation below. *, *', and *'' are bonding sites with adjacent atoms, respectively.

7. Ar １ The organometallic compound according to claim 1, wherein the group is represented by one of the following chemical formulas Ar1-1 to Ar1-13: 【Transformation 7】 【Transformation 8】 【Chemistry 9】 【Chemistry 10】 【Chemistry 11】 【Chemistry 12】 【Chemistry 13】 【Chemistry 14】 【Chemistry 15】 【Chemistry 16】 【Chemistry 17】 [Chemistry 18] 【Chemistry 19】 In the aforementioned chemical formulas Ar1-1 and Ar1-13, E １ ~E ５ The explanation relating to this is the same as in claim 1, Y ６１ and Y ６２ These are independent of each other, single bonds, O, S, N(E) ６８ ), or C (E ６８ ) (E ６９ ) and E １１ ~E １８ , E ２１ ~E ２８ , E ３１ ~E ３８ , E ４１ ~E ４８ , E ５１ ~E ５７ and E ６１ ~E ６９ These are, independently of each other, hydrogen, deuterium, -F, -Cl, -Br, -I, and -CD. ３ , -CD ２ H, -CDH ２ , -CF ３ , -CF ２ H, -CFH ２ hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C １ -C ６０ alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, or C １ -C ６０ Alkoxy group; Deuterium, -F, -Cl, -Br, -I, -CD ３ , -CD ２ H, -CDH ２ , -CF ３ , -CF ２ H, -CFH ２ hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ heteroaryl group, C １ -C ６０ Heteroaryloxy group, C １ -C ６０ Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q １１ ) (Q １２ ), -Si(Q １３ ) (Q １４ ) (Q １５ ), -Ge(Q １３ ) (Q １４ ) (Q １５ ), -B (Q １６ ) (Q １７ ), -P(=O)(Q １８ ) (Q １９ C, replaced by any combination thereof. １ -C ６０ alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, or C １ -C ６０ Alkoxy group; C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ heteroaryl group, C １ -C ６０ Heteroaryloxy group, C １ -C ６０ Heteroarylthio groups, monovalent non-aromatic condensed polycyclic groups, or monovalent non-aromatic heterocondensed polycyclic groups; Deuterium, -F, -Cl, -Br, -I, -CD ３ , -CD ２ H, -CDH ２ , -CF ３ , -CF ２ H, -CFH ２ hydroxyl group, cyano group, nitro group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C １ -C ６０ alkyl group, C ２ -C ６０ Alkenyl group, C ２ -C ６０ Alkynyl group, C １ -C ６０ Alkoxy group, C ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ Heteroaryl group, monovalent non-aromatic condensed polycyclic group, monovalent non-aromatic heterocondensed polycyclic group, -N(Q ２１ ) (Q ２２ ), -Si(Q ２３ ) (Q ２４ ) (Q ２５ ), -B (Q ２６ ) (Q ２７ ), -P(=O)(Q ２８ ) (Q ２９ C, replaced by any combination thereof. ３ -C １０ Cycloalkyl groups, C １ -C １０ Heterocycloalkyl groups, C ３ -C １０ Cycloalkenyl group, C １ -C １０ Heterocycloalkenyl group, C ６ -C ６０ Aryl group, C ６ -C ６０ Aryloxy group, C ６ -C ６０ Arylthio group, C １ -C ６０ heteroaryl group, C １ -C ６０ Heteroaryloxy group, C １ -C ６０ Heteroarylthio group, monovalent non-aromatic condensed polycyclic group, or monovalent non-aromatic heterocondensed polycyclic group; or -N(Q) ３１ ) (Q ３２ ), -Si(Q ３３ ) (Q ３４ ) (Q ３５ ), -Ge(Q ３３ ) (Q ３４ ) (Q ３５ ), -B (Q ３６ ) (Q ３７ ), or -P (=O) (Q ３８ ) (Q ３９ ); and E １１ ~E １８ , E ２１ ~E ２８ , E ３１ ~E ３８ , E ４１ ~E ４８ , E ５１ ~E ５７ and E ６１ ~E ６９ Two or more of these elements selectively combine with each other to form a substituted or non-substituted C. ５ -C ３０ A carbon ring group, or a substituted or unsubstituted C １ -C ３０ It can form a heterocyclic group, * indicates a bonding site with an adjacent atom.

8. R １ ~R ４ , R １０ ~R １２ , R ２０ , R ３０ , R ４１ and R ４４ They are independent of each other, Hydrogen, deuterium, -F, -Cl, -Br, -I, hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, -SF ５ , C １ -C ２０ alkyl group, or C １ -C ２０ Alkoxy group; Deuterium, -F, -Cl, -Br, -I, -CD ３ , -CD ２ H, -CDH ２ , -CF ３ , -CF ２ H, -CFH ２ hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C １ -C １０ C substituted with alkyl groups, cyclopentyl groups, cyclohexyl groups, cycloheptyl groups, cyclooctyl groups, adamantanyl groups, norbornanyl groups, norborneyl groups, cyclopentenyl groups, cyclohexenyl groups, cycloheptenyl groups, phenyl groups, naphthyl groups, pyridinyl groups, pyrimidinyl groups, or any combination thereof. １ -C ２０ Alkyl or C １ -C ２０ Alkoxy group; Cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantanyl group, norbornanyl group, norborneyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, naphthyl group, fluorenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, chrysenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrimidinyl group, pyridadinyl group, isoin Dylyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, synnolinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, or imidazopyridinyl group; Deuterium, -F, -Cl, -Br, -I, -CD ３ , -CD ２ H, -CDH ２ , -CF ３ , -CF ２ H, -CFH ２ hydroxyl group, cyano group, nitro group, amino group, amidino group, hydrazine group, hydrazone group, carboxyl group or its salt, sulfonic acid group or its salt, phosphate group or its salt, C １ -C ２０ alkyl group, C １ -C ２０ Alkoxy group, cyclopentyl group, cyclohexyl group, cycloheptyl group, cyclooctyl group, adamantanyl group, norbornanyl group, norborneyl group, cyclopentenyl group, cyclohexenyl group, cycloheptenyl group, phenyl group, naphthyl group, fluorenyl group, phenantrenyl group, anthracenyl group, fluoranthenyl group, triphenylenyl group, pyrenyl group, crisenyl group, pyrrolyl group, thiophenyl group, furanyl group, imidazolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyrazolyl group Dinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolinyl group, synnolinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group, tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarb Cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, adamantanyl, norbornanyl, norbornenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, phenyl, naphthyl, fluorenyl, phenantrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, pyrrolyl, thiophenyl, furanyl, imidazopyridinyl, imidazopyridinyl, cyclopentyl, cyclohexenyl, cycloheptenyl, phenyl, naphthyl, fluorenyl, phenantrenyl, anthracenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, pyrrolyl, thiophenyl, furanyl, imidazopyridinyl Zolyl group, pyrazolyl group, thiazolyl group, isothiazolyl group, oxazolyl group, isoxazolyl group, pyridinyl group, pyridinyl group, pyrimidinyl group, pyridadinyl group, isoindolyl group, indolyl group, indazolyl group, prinyl group, quinolinyl group, isoquinolinyl group, benzoquinolinyl group, quinoxalinyl group, quinazolyl group, synnolinyl group, carbazolyl group, phenanthrolinyl group, benzimidazolyl group, benzofuranyl group, benzothiophenyl group, isobenzothiazolyl group, benzoxazolyl group, isobenzoxazolyl group, triazolyl group,Tetrazolyl group, oxadiazolyl group, triazinyl group, dibenzofuranyl group, dibenzothiophenyl group, benzocarbazolyl group, dibenzocarbazolyl group, imidazopyridinyl group, or imidazopyrimidinyl group; or, -N(Q) １ ) (Q ２ ), -Si(Q ３ ) (Q ４ ) (Q ５ ), -Ge(Q ３ ) (Q ４ ) (Q ５ ), -B (Q ６ ) (Q ７ ), or -P (=O) (Q ８ ) (Q ９ ); and Q １ ~Q ９ They are independent of each other, -CH ３ 、-CD ３ 、-CD ２ H、-CDH ２ 、-CH ２ CH ３ 、-CH ２ CD ３ 、-CH ２ CD ２ H、-CH ２ CDH ２ 、-CHDCH ３ 、-CHDCD ２ H、-CHDCDH ２ 、-CHDCD ３ 、-CD ２ CD ３ 、-CD ２ CD ２ H、または-CD ２ CDH ２ ; n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, phenyl group, or naphthyl group; or Deuterium, C １ -C １０ The organometallic compound according to claim 1, wherein the group is an n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert-butyl group, n-pentyl group, isopentyl group, sec-pentyl group, tert-pentyl group, phenyl group, or naphthyl group, substituted with an alkyl group, a phenyl group, or any combination thereof.

9. The organometallic compound represented by chemical formula 1 is represented by the following chemical formula 11 or 12, according to claim 1: 【Chemistry 20】 【Chemistry 21】 In the aforementioned chemical formulas 11 and 12, M １ A ２０ A ３０ , X １１ , X １２ , X ２０ ~X ２２ , X ３０ ~X ３２ , T １ , T ２ Ar １ , R ２０ , R ３０ , R ４１ ~R ４４ The explanations relating to b20 and b30 are the same as in claim 1, X １３ is C(R １３ ) or N, X １４ is C(R １４ ) or N, X １５ is C(R １５ ) or N, X １６ is C(R １６ ) or N, R １３ ~R １６ The explanations relating to this are independent of each other and R in claim 1. １０ This is similar to the explanation provided.

10. The organometallic compound according to claim 1, which is one of the following compounds 1 to 324: 【Chemistry 22】 【Chemistry 23】 【Chemistry 24】 【Chemistry 25】 【Chemistry 26】 【Chemistry 27】 【Chemistry 28】 【Chemistry 29】 【Transformation 30】 【Chemistry 31】 【Chemistry 32】 【Transformation 33】 【Transformation 34】 【Chemistry 35】 【Transformation 36】 【Chemistry 37】 【Transformation 38】 【Chemistry 39】 【Chemistry 40】 【Chemistry 41】 【Chemistry 42】 【Chemistry 43】 【Chemistry 44】 【Chemistry 45】 【Chemistry 46】 【Chemistry 47】 【Chemistry 48】

11. First electrode and, The second electrode and The first electrode and the second electrode are interposed in an organic layer, An organic light-emitting element comprising an organometallic compound according to any one of claims 1 to 10.

12. The aforementioned organic layer includes a light-emitting layer, The organic light-emitting element according to claim 11, wherein the light-emitting layer contains the organometallic compound.

13. The organic light-emitting element according to claim 12, wherein the light-emitting layer emits blue light having a maximum emission wavelength of 400 nm to 490 nm.

14. The light-emitting layer includes a host and an emitter. The organic light-emitting element according to claim 12, wherein the emitter contains the organometallic compound.

15. The light-emitting layer includes a host, a sensor, and an emitter. The organic light-emitting element according to claim 12, wherein the sensor contains the organometallic compound.

16. The organic light-emitting element according to claim 15, wherein the host includes a hole-transporting host, an electron-transporting host, a bipolar host, or a combination thereof.

17. The organic light-emitting element according to claim 15, wherein the emitter is a metal-free organic compound.

18. The organic light-emitting element according to claim 15, wherein the host and the sensor are substantially non-luminescent, and the emitter emits light.

19. The organic layer includes a hole transport region interposed between the first electrode and the light-emitting layer, and an electron transport region interposed between the light-emitting layer and the second electrode. The hole transport region includes at least one layer selected from a hole injection layer, a hole transport layer, and an electron blocking layer. The electron transport region includes at least one layer selected from a hole blocking layer, an electron transport layer, and an electron injection layer. The organic light-emitting element according to claim 12, wherein at least one of the hole transport region and the electron transport region contains the organometallic compound.

20. An electronic device comprising an organic light-emitting element as described in claim 11.

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