Organic electroluminescent compound, several host materials and this comprehensive organic electroluminescent device

Abstract

The present disclosure relates to organic electroluminescent compounds, multiple host materials, and an organic electroluminescent device comprising these. By incorporating a specific combination of compounds according to the present disclosure as multiple host materials, or by incorporating compounds according to the present disclosure, organic electroluminescent devices with improved driving voltage, luminous efficacy, and / or lifetime characteristics compared to conventional organic electroluminescent devices can be provided.

Description

Technical field

[0001] The present disclosure relates to an organic electroluminescent compound, several host materials and an organic electroluminescent device comprising these. State of the art

[0002] A small-molecule green organic electroluminescent device (OLED) was first developed by Tang et al. of Eastman Kodak in 1987 using a TPD / ALq3 bilayer consisting of a light-emitting layer and a charge-transport layer. OLED development subsequently progressed rapidly, leading to commercialization. Three types of RGB light-emitting materials are used to realize a full-color OLED display, and the development of RGB light-emitting materials with high luminous efficacy, drive voltage, and / or long lifetime, as well as the development of OLEDs with such properties, are considered important tasks in improving the overall characteristics of the organic electroluminescent device, including resolution.

[0003] To improve luminous efficacy, drive voltage, and / or lifetime, various materials or concepts for an organic layer of an organic electroluminescent device have been proposed, but these have not proven satisfactory in practical application. Accordingly, there is a continuing need for the development of an organic electroluminescent device with improved performance, such as improved drive voltage, luminous efficacy, power efficiency, and / or lifetime characteristics compared to previously disclosed organic electroluminescent devices. Disclosure of the invention. Technical problem

[0004] The objective of the present disclosure is to provide an organic electroluminescent device with improved driver voltage, luminous efficacy and / or lifetime characteristics.

[0005] As a result of intensive studies to solve the technical problems, it was found in the course of the present invention that the above objective can be achieved by an organic electroluminescent device comprising an anode, a cathode, a first light-emitting layer arranged between the anode and the cathode, and a second light-emitting layer arranged between the first light-emitting layer and the cathode, wherein the first light-emitting layer contains a first compound, represented by the following formula 1 or the following formula 3, as a first host material, and the second light-emitting layer contains a second compound, represented by the following formula 2, as a second host material, and wherein the first light-emitting layer and the second light-emitting layer are in direct contact with each other: where in Formula 1 R1 to R16 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30)-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; with the proviso that at least one of R1 to R 16 for -(L) a -(Ar) b stands; L each independently for a single bond, a substituted or unsubstituted (C6-C 30 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene; Ar each independently for a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl; and a represents an integer from 1 to 4, b represents an integer from 1 to 4, and L and Ar can each be the same or different from each other; where in Formula 3 R 50 to R 61each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30)-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; with the proviso that at least one of R 50 to R 61 for -L 30 -Ar 30 stands; L 30 for a single bond, a substituted or unsubstituted (C6-C 12 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene; Ar 30 represented by the following formula B-1 or formula B-2, where in formulas B-1 and B-2 any one of R 62 to R 71 with L 30 is linked R 62 to R 71 each independently with L 30 are linked or for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30)-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30)-ring and an aromatic (C6-C 30 )-ring stand; R 67 and R 68 together to -O-, -S-, -NR 80 - or -CR 81 R 82 - can be linked; R 80 , R 81 and R 82 each independently for a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl or a substituted or unsubstituted (C3-C 30 )-Cycloalkyl stand; R 81 and R 82 can be linked together to form one or more rings; Ar1 and Ar2 each independently for hydrogen, deuterium or a substituted or unsubstituted (C6-C 30 )Aryl, provided that Ar1 and Ar2 are not both hydrogen; and R 100 to R 104each stand independently for hydrogen or deuterium; where in Formula 2 Ar A for a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl or the following formula A-1; where in Formula A-1 T1 for O, S, CR a R b or NR c stands; Ring A and ring B each independently for a substituted or unsubstituted (C6-C 30 )-arene ring or a substituted or unsubstituted (3- to 30-membered) heteroarene ring; Ar 11 for a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl is present; R 17 to R 24 Each independently hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30)-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30)-ring and an aromatic (C6-C 30 )-ring or -L 13 -N(Ar 13 )(Ar 14 ) stand; R 25 and R 26 Each independently a position that starts with L 12 linked, are or for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30)-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring or - L 13 -N(Ar 13 )(Ar 14 ) stand; R a and R b each independently for a substituted or unsubstituted (C1-C 30 )-Alkyl or a substituted or unsubstituted (C6-C 30 )-Aryl can stand alone or be linked together to form one or more rings; R c for a substituted or unsubstituted (C1-C 30 )-Alkyl or a substituted or unsubstituted (C6-C 30 )-Aryl stands; L 11to L 13 each independently for a single bond, a substituted or unsubstituted (C6-C 30 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene; and Ar 13 and Ar 14 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30)-Alkoxy, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl or a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl stand.

[0006] Furthermore, in accordance with the present invention, to achieve the purpose described above, an organic electroluminescent compound, represented by the following formula 11 and comprising at least one deuterium, an organic electroluminescent compound, represented by the following formula 12, an organic electroluminescent compound, represented by the following formula 13, an organic electroluminescent compound, represented by the following formula 31, and an organic electroluminescent compound, represented by the following formula 1-5, are provided.

[0007] It is true that in Formula 11 R1 to R 16 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30)-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; with the proviso that at least one of R1 to R 16 for -(L) a -(Ar) b stands; L each independently for a single bond, a substituted or unsubstituted (C6-C 30 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene; Ar each independently for a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl; and where a represents an integer from 1 to 4, b represents an integer from 1 to 4; L and Ar can be the same or different from each other. It follows that in formula 12 R1 to R 16 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; with the proviso that at least one of R1 to R 16represented by the following formula 12-1: where X represents O, S, CR 44 R 45 or NR 46 stands; L1 for a single bond, a substituted or unsubstituted (C6-C 30 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene is present, L1 with one of R 36 to R 46 is linked; R 36 to R 46 a site linked to L1, are or each independently for hydrogen, deuterium, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl.

[0008] It is true that in Formula 13 R 50 to R 61each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30)-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; with the proviso that at least one of R 50 to R 61 for -L 30 -Ar 30 stands; L 30 for a single bond, a substituted or unsubstituted (C6-C 12 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene; Ar 30 represented by the following formula B-1, where any one of R 62 to R 71 with L 30 is linked R 62 to R 71 each independently with L 30 are linked or for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30)-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; R 67and R 68 together to -O-, -S-, -NR 80 - or -CR 81 R 82 - can be linked; and R 80 , R 81 and R 82 each independently for a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl or a substituted or unsubstituted (C3-C 30 )-Cycloalkyl stand; R 81 and R 82 can be linked together to form one or more rings.

[0009] It is true that in Formula 31 R 51 to R 61 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30)-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; Ar1 and Ar2 each independently for hydrogen, deuterium or a substituted or unsubstituted (C6-C 30 )Aryl, provided that Ar1 and Ar2 are not both hydrogen; and R 100 to R 104 Each can stand independently for hydrogen or deuterium. where in Formula 1-5 R1 to R5 and R7 to R 16 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30)-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; L stands for a single binding; Ar stands for substituted or unsubstituted phenanthrenyl; and Hydrogen in the above formula can be replaced by deuterium. Advantageous effects of the invention

[0010] By using several host materials comprising an organic electroluminescent compound according to the present disclosure, or by using an organic electroluminescent compound according to the present disclosure, an organic electroluminescent device with improved driver voltage, luminous efficacy and / or lifetime characteristics can be provided. embodiment of the invention

[0011] The present revelation is described in detail below. However, the following description is intended to explain the present revelation and in no way to limit the scope of protection afforded by the revelation.

[0012] In this disclosure, the term "organic electroluminescent compound" means a compound that can be used in an organic electroluminescent device and can be included, as required, in any layer of which an organic electroluminescent device is constructed. For example, the organic electroluminescent material can be a hole injection material, a hole transport material, a hole auxiliary material, a light-emitting auxiliary material, an electron blocking material, a light-emitting material (containing a host material and a dopant material), an electron buffer material, a hole blocking material, an electron transport material, an electron injection material, etc.The hole transport zone material can be at least one of the group consisting of a hole transport material, a hole injection material, an electron blocking material, a hole auxiliary material and a light-emitting auxiliary material.

[0013] In this disclosure, the term “multiple host materials” means a host material comprising a combination of two or more compounds that may be included in any light-emitting layer from which an organic electroluminescent device is constructed. It can refer to a material both before its incorporation into an organic electroluminescent device (for example, before vapor deposition) and after its incorporation into an organic electroluminescent device (for example, after vapor deposition). For example, the multiple host materials of this disclosure are a combination of at least two host materials and may optionally further include conventional materials incorporated into an organic electroluminescent material.At least two compounds contained in the multiple host materials of the present disclosure may be contained together in a light-emitting layer or each in different light-emitting layers. For example, the at least two host materials may be evaporated as a mixture, evaporated together, or evaporated individually.

[0014] The term “(C1-C 30 )-Alkyl here means a linear or branched alkyl chain with 1 to 30 carbon atoms. According to one embodiment of the present disclosure, the number of carbon atoms can be 1 to 20, and according to another embodiment of the present disclosure, the number of carbon atoms can be 1 to 10. The above alkyl can include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, sec-butyl, etc.

[0015] The term “(C6-C 30 )-Aryl“, „(C6-C30 )-Arylen“ oder „(C6-C 30)-Arene” in the present disclosure refers to a monocyclic or fused ring residue derived from an aromatic hydrocarbon having 6 to 30 ring-structure carbon atoms and which may be partially saturated. According to one embodiment of the present disclosure, the number of ring-structure carbon atoms may be 6 to 20, and according to another embodiment of the present disclosure, the number of ring-structure carbon atoms may be 6 to 15. The above aryl may comprise a spiro structure. The above aryl may comprise phenyl, biphenyl, terphenyl, quaterphenyl, naphthyl, binaphtyl, phenylnaphthyl, naphthylphenyl, fluorenyl, phenylfluorenyl, dimethylfluorenyl, diphenylfluorenyl, benzofluorenyl, diphenylbenzofluorenyl, dibenzofluorenyl, phenanthrenyl, benzophenanthrenyl, phenylphenanthrenyl, anthracenyl, benzanthracenyl, Indenyl, Triphenylenyl, Pyrenyl, Tetracenyl, Perylenyl, Chrysenyl, Benzochrysenyl, Naphthacenyl, Fluoranthenyl,Benzofluoranthenyl, Tolyl, Xylyl, Mesityl, Cumenyl, Spiro[fluoren-fluoren]yl, Spiro[fluoren-benzofluoren]yl, Azulenyl, Tetramethyldihydrophenanthrenyl usw. einschließen. Spezieller kann das Aryl o-Tolyl, m-Tolyl, p-Tolyl, 2,3-Xylyl, 3,4-Xylyl, 2,5-Xylyl, Mesityl, o-Cumenyl, m-Cumenyl, p-Cumenyl, p-tert-butylphenyl, p-(2-Phenylpropyl)phenyl, 4'-Methylbiphenyl, 4"-tert-Butyl-p-Terphenyl-4-yl, o-Biphenyl, m-Biphenyl, p-Biphenyl, o-Terphenyl, m-Terphenyl-4-yl, m-Terphenyl-3-yl, m-Terphenyl-2-yl, p-Terphenyl-4-yl, p-Terphenyl-3-yl, p-Terphenyl-2-yl, m-Quaterphenyl, 1-Naphthyl, 2-Naphthyl, 1-Fluorenyl, 2-Fluorenyl, 3-Fluorenyl, 4-Fluorenyl, 9-Fluorenyl, 9,9-Dimethyl-1-fluorenyl, 9,9-Dimethyl-2-fluorenyl, 9,9-Dimethyl-3-fluorenyl, 9,9-Dimethyl-4-fluorenyl, 9,9-Diphenyl-1-fluorenyl, 9,9-Diphenyl-2-fluorenyl, 9,9-Diphenyl-3-fluorenyl, 9,9-Diphenyl-4-fluorenyl, 1-Anthryl, 2-Anthryl, 9-Anthryl, 1-Phenanthryl, 2-Phenanthryl, 3-Phenanthryl, 4-Phenanthryl, 9-Phenanthryl, 1-Chrysenyl, 2-Chrysenyl,3-Chrysenyl, 4-Chrysenyl, 5-Chrysenyl, 6-Chrysenyl, Benzo[c]phenanthryl, Benzo[g]Chrysenyl, 1-Triphenylenyl, 2-Triphenylenyl, 3-Triphenylenyl, 4-Triphenylenyl, 3-Fluoranthenyl, 4-Fluoranthenyl, 8-Fluoranthenyl, 9-Fluoranthenyl, Benzofluoranthenyl, 11,11-Dimethyl-1-benzo[a]fluorenyl, 11,11-Dimethyl-2-benzo[a]fluorenyl, 11,11-Dimethyl-3-benzo[a]fluorenyl, 11,11-Dimethyl-4-benzo[a]fluorenyl, 11,11-Dimethyl-5-benzo[a]fluorenyl, 11,11-Dimethyl-6-benzo[a]fluorenyl, 11,11-Dimethyl-7-benzo[a]fluorenyl, 11,11-Dimethyl-8-benzo[a]fluorenyl, 11,11-Dimethyl-9-benzo[a]fluorenyl, 11,11-Dimethyl-10-benzo[a]fluorenyl, 11,11-Dimethyl-1-benzo[b]fluorenyl, 11,11-Dimethyl-2-benzo[b]fluorenyl, 11,11-Dimethyl-3-benzo[b]fluorenyl, 11,11-Dimethyl-4-benzo[b]fluorenyl, 11,11-Dimethyl-5-benzo[b]fluorenyl, 11,11-Dimethyl-6-benzo[b]fluorenyl, 11,11-Dimethyl-7-benzo[b]fluorenyl, 11,11-Dimethyl-8-benzo[b]fluorenyl, 11,11-Dimethyl-9-benzo[b]fluorenyl, 11,11-Dimethyl-10-benzo[b]fluorenyl, 11,11-Dimethyl-1-benzo[c]fluorenyl, 11,11-Dimethyl-2-benzo[c]fluorenyl, 11,11-Dimethyl-3-benzo[c]fluorenyl, 11,11-Dimethyl-4-benzo[c]fluorenyl, 11,11-Dimethyl-5-benzo[c]fluorenyl, 11,11-Dimethyl-6-benzo[c]fluorenyl, 11,11-Dimethyl-7-benzo[c]fluorenyl, 11,11-Dimethyl-8-benzo[c]fluorenyl, 11,11-Dimethyl-9-benzo[c]fluorenyl, 11,11-Dimethyl-10-benzo[c]fluorenyl, 11,11-Diphenyl-1-benzo[a]fluorenyl, 11,11-Diphenyl-2-benzo[a]fluorenyl, 11,11-Diphenyl-3-benzo[a]fluorenyl, 11,11-Diphenyl-4-benzo[a]fluorenyl, 11,11-Diphenyl-5-benzo[a]fluorenyl, 11,11-Diphenyl-6-benzo[a]fluorenyl, 11,11-Diphenyl-7-benzo[a]fluorenyl, 11,11-Diphenyl-8-benzo[a]fluorenyl, 11,11-Diphenyl-9-benzo[a]fluorenyl, 11,11-Diphenyl-10-benzo[a]fluorenyl, 11,11-Diphenyl-1-benzo[b]fluorenyl, 11,11-Diphenyl-2-benzo[b]fluorenyl, 11,11-Diphenyl-3-benzo[b]fluorenyl, 11,11-Diphenyl-4-benzo[b]fluorenyl, 11,11-Diphenyl-5-benzo[b]fluorenyl, 11,11-Diphenyl-6-benzo[b]fluorenyl, 11,11-Diphenyl-7-benzo[b]fluorenyl, 11,11-Diphenyl-8-benzo[b]fluorenyl, 11,11-Diphenyl-9-benzo[b]fluorenyl, 11,11-Diphenyl-10-benzo[b]fluorenyl, 11,11-Diphenyl-1-benzo[c]fluorenyl, 11,11-Diphenyl-2-benzo[c]fluorenyl, 11,11-Diphenyl-3-benzo[c]fluorenyl, 11,11-Diphenyl-4-benzo[c]fluorenyl, 11,11-Diphenyl-5-benzo[c]fluorenyl, 11,11-Diphenyl-6-benzo[c]fluorenyl, 11,11-Diphenyl-7-benzo[c]fluorenyl, 11,11-Diphenyl-8-benzo[c]fluorenyl, 11,11-Diphenyl-9-benzo[c]fluorenyl, 11,11-Diphenyl-10-benzo[c]fluorenyl, 9,9,10,10-Tetramethyl-9,10-dihydro-1-phenanthrenyl, 9,9,10, 10-Tetramethyl-9, 10-dihydro-2-phenanthrenyl, 9,9,10,10-Tetramethyl-9,10-dihydro-3-phenanthrenyl, 9,9,10,10-Tetramethyl-9,10-dihydro-4-phenanthrenyl usw. einschließen.,

[0016] The terms “(3- to 30-membered) heteroaryl”, “(3- to 30-membered) heteroarylene”, or “(3- to 30-membered) heteroarene” in the present disclosure shall refer to an aryl or arylene comprising 3 to 30 ring framework atoms and at least one heteroatom from the group consisting of B, N, O, S, Si, and P. The number of heteroatoms is preferably 1 to 4. The heteroaryl(s) mentioned above may be a monocyclic ring or an fused ring fused to at least one benzene ring and may be partially saturated. Furthermore, the heteroaryl(s) mentioned above may be formed by linking at least one heteroaryl or aryl group to a heteroaryl(s) group via one or more single bonds, and it may comprise a spiro structure. The above heteroaryl may be a monocyclic ring type heteroaryl such as furyl, thiophenyl, pyrrolyl, imidazolyl, pyrazolyl, thiazolyl, thiadiazolyl, isothiazolyl, isoxazolyl, oxazolyl,Oxadiazolyl, Triazinyl, Tetrazinyl, Triazolyl, Tetrazolyl, Furazanyl, Pyridyl, Pyrazinyl, Pyrimidinyl, Pyridazinyl usw. und ein Heteroaryl vom Typ anellierter Ring wie Benzofuranyl, Benzothiophenyl, Isobenzofuranyl, Dibenzofuranyl, Benzonaphthofuranyl, Benzophenanthrofuranyl, Dibenzothiophenyl, Benzonaphthothiophenyl, Benzimidazolyl, Benzothiazolyl, Benzoisothiazolyl, Benzophenanthrothiophenyl, Benzoisoxazolyl, Benzoxazolyl, Phenanthrooxazolyl, Phenanthrothiazolyl, Isoindolyl, Indolyl, Benzoindolyl, Indazolyl, Benzothiadiazolyl, Chinolyl, Isochinolyl, Cinnolinyl, Chinazolinyl, Benzochinazolinyl, Chinoxalinyl, Benzochinoxalinyl, Naphthyridinyl, Carbazolyl, Benzocarbazolyl, Dibenzocarbazolyl, Phenoxazinyl, Phenothiazinyl, Phenanthridinyl, Benzodioxolyl, Dihydroacridinyl usw. einschließen. Spezieller kann das Heteroaryl 1-Pyrrolyl, 2-Pyrrolyl, 3-Pyrrolyl, Pyrazinyl, 2-Pyridyl, 2-Pyrimidinyl, 4-Pyrimidinyl, 5-Pyrimidinyl, 6-Pyrimidinyl, 1,2,3-Triazin-4-yl, 1,2,4-Triazin-3-yl, 1,3,5-Triazin-2-yl, 1-Imidazolyl, 2-Imidazolyl, 1-Pyrazolyl, 1-Indolidinyl, 2-Indolidinyl, 3-Indolidinyl, 5-Indolidinyl, 6-Indolidinyl, 7-Indolidinyl, 8-Indolidinyl, 2-Imidazopyridyl, 3-Imidazopyridyl, 5-Imidazopyridyl, 6-Imidazopyridyl, 7-Imidazopyridyl, 8-Imidazopyridyl, 3-Pyridyl, 4-Pyridyl, 1-Indolyl, 2-Indolyl, 3-Indolyl, 4-Indolyl, 5-Indolyl, 6-Indolyl, 7-Indolyl, 1-Isoindolyl, 2-Isoindolyl, 3-Isoindolyl, 4-Isoindolyl, 5-Isoindolyl, 6-Isoindolyl, 7-Isoindolyl, 2-Furyl, 3-Furyl, 2-Benzofuranyl, 3-Benzofuranyl, 4-Benzofuranyl, 5-Benzofuranyl, 6-Benzofuranyl, 7-Benzofuranyl, 1-Isobenzofuranyl, 3-Isobenzofuranyl, 4-Isobenzofuranyl, 5-Isobenzofuranyl, 6-Isobenzofuranyl, 7-Isobenzofuranyl, 2-Chinolyl, 3-Chinolyl, 4-Chinolyl, 5-Chinolyl, 6-Chinolyl, 7-Chinolyl, 8-Chinolyl, 1-Isochinolyl, 3-Isochinolyl, 4-Isochinolyl, 5-Isochinolyl, 6-Isochinolyl, 7-Isochinolyl, 8-Isochinolyl, 2-Chinoxalinyl, 5-Chinoxalinyl, 6-Chinoxalinyl, 1-Carbazolyl, 2-Carbazolyl, 3-Carbazolyl, 4-Carbazolyl, 9-Carbazolyl,Azacarbazolyl-1-yl, Azacarbazolyl-2-yl, Azacarbazolyl-3-yl, Azacarbazolyl-4-yl, Azacarbazolyl-5-yl, Azacarbazolyl-6-yl, Azacarbazolyl-7-yl, Azacarbazolyl-8-yl, Azacarbazolyl-9-yl, 1-Phenanthridinyl, 2-Phenanthridinyl, 3-Phenanthridinyl, 4-Phenanthridinyl, 6-Phenanthridinyl, 7-Phenanthridinyl, 8-Phenanthridinyl, 9-Phenanthridinyl, 10-Phenanthridinyl, 1-Acridinyl, 2-Acridinyl, 3-Acridinyl, 4-Acridinyl, 9-Acridinyl, 2-Oxazolyl, 4-Oxazolyl, 5-Oxazolyl, 2-Oxadiazolyl, 5-Oxadiazolyl, 3-Furazanyl, 2-Thienyl, 3-Thienyl, 2-Methylpyrrol-1-yl, 2-Methylpyrrol-3-yl, 2-Methylpyrrol-4-yl, 2-Methylpyrrol-5-yl, 3-Methylpyrrol-1-yl, 3-Methylpyrrol-2-yl, 3-Methylpyrrol-4-yl, 3-Methylpyrrol-5-yl, 2-tert-Butylpyrrol-4-yl, 3-(2-Phenylpropyl)pyrrol-1-yl, 2-Methyl-1-indolyl, 4-Methyl-1-indolyl, 2-Methyl-3-indolyl, 4-Methyl-3-indolyl, 2-tert-Butyl-1-indolyl, 4-tert-Butyl-1-indolyl, 2-tert-Butyl-3-indolyl, 4-tert-Butyl-3-indolyl, 1-Dibenzofuranyl, 2-Dibenzofuranyl, 3-Dibenzofuranyl, 4-Dibenzofuranyl,1-Dibenzothiophenyl, 2-Dibenzothiophenyl, 3-Dibenzothiophenyl, 4-Dibenzothiophenyl, 1-Naphtho-[1,2-b]-benzofuranyl, 2-Naphtho-[1,2-b]-benzofuranyl, 3-Naphtho-[1,2-b]-benzofuranyl, 4-Naphtho-[1,2-b]-benzofuranyl, 5-Naphtho-[1,2-b]-benzofuranyl, 6-Naphtho-[1,2-b]-benzofuranyl, 7-Naphtho-[1,2-b]-benzofuranyl, 8-Naphtho-[1,2-b]-benzofuranyl, 9-Naphtho-[1,2-b]-benzofuranyl, 10-Naphtho-[1,2-b]-benzofuranyl, 1-Naphtho-[2,3-b]-benzofuranyl, 2-Naphtho-[2,3-b]-benzofuranyl, 3-Naphtho-[2,3-b]-benzofuranyl, 4-Naphtho-[2,3-b]-benzofuranyl, 5-Naphtho-[2,3-b]-benzofuranyl, 6-Naphtho-[2,3-b]-benzofuranyl, 7-Naphtho-[2,3-b]-benzofuranyl, 8-Naphtho-[2,3-b]-benzofuranyl, 9-Naphtho-[2,3-b]-benzofuranyl, 10-Naphtho-[2,3-b]-benzofuranyl, 1-Naphtho-[2,1-b]-benzofuranyl, 2-Naphtho-[2,1-b]-benzofuranyl, 3-Naphtho-[2,1-b]-benzofuranyl, 4-Naphtho-[2,1-b]-benzofuranyl, 5-Naphtho-[2,1-b]-benzofuranyl, 6-Naphtho-[2,1-b]-benzofuranyl, 7-Naphtho-[2,1-b]-benzofuranyl, 8-Naphtho-[2,1-b]-benzofuranyl, 9-Naphtho-[2,1-b]-benzofuranyl, 10-Naphtho-[2,1-b]-benzofuranyl, 1-Naphtho-[1,2-b]-benzothiophenyl, 2-Naphtho-[1,2-b]-benzothiophenyl, 3-Naphtho-[1,2-b]-benzothiophenyl, 4-Naphtho-[1,2-b]-benzothiophenyl, 5-Naphtho-[1,2-b]-benzothiophenyl, 6-Naphtho-[1,2-b]-benzothiophenyl, 7-Naphtho-[1,2-b]-benzothiophenyl, 8-Naphtho-[1,2-b]-benzothiophenyl, 9-Naphtho-[1,2-b]-benzothiophenyl, 10-Naphtho-[1,2-b]-benzothiophenyl, 1-Naphtho-[2,3-b]-benzothiophenyl, 2-Naphtho-[2,3-b]-benzothiophenyl, 3-Naphtho-[2,3-b]-benzothiophenyl, 4-Naphtho-[2,3-b]-benzothiophenyl, 5-Naphtho-[2,3-b]-benzothiophenyl, 1-Naphtho-[2,1-b]-benzothiophenyl, 2-Naphtho-[2,1-b]-benzothiophenyl, 3-Naphtho-[2,1-b]-benzothiophenyl, 4-Naphtho-[2,1-b]-benzothiophenyl, 5-Naphtho-[2,1-b]-benzothiophenyl, 6-Naphtho-[2,1-b]-benzothiophenyl, 7-Naphtho-[2,1-b]-benzothiophenyl, 8-Naphtho-[2,1-b]-benzothiophenyl, 9-Naphtho-[2,1-b]-benzothiophenyl, 10-Naphtho-[2,1-b]-benzothiophenyl, 2-Benzofuro[3,2-d]pyrimidinyl, 6-Benzofuro[3,2-d]pyrimidinyl,7-Benzofuro[3,2-d]pyrimidinyl, 8-Benzofuro[3,2-d]pyrimidinyl, 9-Benzofuro[3,2-d]pyrimidinyl, 2-Benzothio[3,2-d]pyrimidinyl, 6-Benzothio[3,2-d]pyrimidinyl, 7-Benzothio[3,2-d]pyrimidinyl, 8-Benzothio[3,2-d]pyrimidinyl, 9-Benzothio[3,2-d]pyrimidinyl, 2-Benzofuro[3,2-d]pyrazinyl, 6-Benzofuro[3,2-d]pyrazinyl, 7-Benzofuro[3,2-d]pyrazinyl, 8-Benzofuro[3,2-d]pyrazinyl, 9-Benzofuro[3,2-d]pyrazinyl, 2-Benzothio[3,2-d]pyrazinyl, 6-Benzothio[3,2-d]pyrazinyl, 7-Benzothio[3,2-d]pyrazinyl, 8-Benzothio[3,2-d]pyrazinyl, 9-Benzothio[3,2-d]pyrazinyl, 1-Silafluorenyl, 2-Silafluorenyl, 3-Silafluorenyl, 4-Silafluorenyl, 1-Germafluorenyl, 2-Germafluorenyl, 3-Germafluorenyl, 4-Germafluorenyl, 1-Dibenzoselenphenyl, 2-Dibenzoselenphenyl, 3-Dibenzoselenphenyl, 4-Dibenzoselenphenyl usw. einschließen.,

[0017] Der Begriff „(C3-C 30)-Cycloalkyl" means a mono- or polycyclic hydrocarbon with 3 to 30 ring-structure carbon atoms. According to one embodiment of the present disclosure, the number of ring-structure carbon atoms can be 3 to 20, and according to another embodiment of the present disclosure, the number of ring-structure carbon atoms can be 3 to 7. The above cycloalkyl can include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclopentylmethyl, cyclohexylmethyl, etc.

[0018] The term “(3- to 7-membered) heterocycloalkyl” means a cycloalkyl with 3 to 7 ring framework atoms and at least one heteroatom. The number of ring framework atoms can be 5 to 7. According to one embodiment of the present disclosure, the heteroatom can be at least one from the group consisting of B, N, O, S, Si, and P, and according to another embodiment of the present disclosure, the heteroatom can be at least one from the group consisting of O, S, and N. The above heterocycloalkyl can include tetrahydrofuran, pyrrolidine, thiolane, tetrahydropyran, etc.

[0019] Here, "an fused ring consisting of an aliphatic (C3-C3)" means 30 )-ring and an aromatic (C6-C 30)-ring” is a ring formed by the fusion of at least one aliphatic ring with 3 to 30 ring-structure carbon atoms, wherein the number of ring-structure carbon atoms is preferably 3 to 25, more preferably 3 to 18, and at least one aromatic ring with 6 to 30 ring-structure carbon atoms, wherein the number of ring-structure carbon atoms is preferably 6 to 25, more preferably 6 to 18. For example, the fused ring can be an fused ring of at least one benzene and at least one cyclohexane or an fused ring of at least one naphthalene and at least one cyclopentane, etc. Here, the carbon atoms in the fused ring can be from an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring may be replaced by at least one heteroatom selected from B, N, O, S, Si and P, for example at least one heteroatom selected from N, O and S.

[0020] The term "halogen" in the present disclosure includes F, Cl, Br and I.

[0021] Furthermore, "orfho-" ("o-"), "meta-" ("m-"), and "para" ("p-") are prefixes that indicate the relative positions of substituents. The prefix "orfho-" indicates that two substituents are adjacent to each other; for example, when two substituents occupy positions 1 and 2 in a benzene derivative, this is called an "ortho-" configuration. The prefix "meta-" indicates that two substituents occupy positions 1 and 3; for example, when two substituents occupy positions 1 and 3 in a benzene derivative, this is called a "meta-" configuration. The prefix "para-" indicates that two substituents occupy positions 1 and 4; for example, when two substituents occupy positions 1 and 4 in a benzene derivative, this is called a "para-" configuration.

[0022] “A ring formed by linkage to an adjacent substituent” here means a substituted or unsubstituted (3- to 30-membered) mono- or polycyclic, alicyclic, aromatic ring, or a combination thereof, formed by linking or annulating two or more adjacent substituents. For example, the ring may be a substituted or unsubstituted (5- to 25-membered) mono- or polycyclic, alicyclic, aromatic ring, or a combination thereof. According to one embodiment of the present disclosure, the number of ring skeleton atoms of the above ring may be 5 to 20 members, and according to another embodiment, 5 to 15 members. Furthermore, the ring may contain at least one heteroatom selected from the group consisting of B, N, O, S, Si, and P, for example, N, O, and S.Specific examples of the above ring are a substituted or unsubstituted dibenzothiophene ring, a substituted or unsubstituted dibenzofuran ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted phenanthrene ring, a substituted or unsubstituted fluorene ring, a substituted or unsubstituted benzofluorene ring, a substituted or unsubstituted benzothiophene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted indole ring, a substituted or unsubstituted indene ring, a substituted or unsubstituted benzene ring, a substituted or unsubstituted carbazole ring, etc.

[0023] Furthermore, "substituted" in the expression "substituted or unsubstituted" means that a hydrogen atom in a particular functional group is replaced by another atom or functional group (i.e., a substituent), and also includes replacement by a group formed by a linkage of two or more substituents. For example, the "group formed by a linkage of two or more substituents" could be pyridinetriazine. That is, pyridinetriazine can be a heteroaryl or can be interpreted as a substituent in which two heteroaryl groups are linked.

[0024] The substituted alkyl, the substituted alkenyl, the substituted aryl, the substituted arylene, the substituted heteroaryl, the substituted heteroarylene, the substituted cycloalkyl, the substituted cycloalkenyl, the substituted heterocycloalkyl, the substituted alkoxy, the substituted trialkylsilyl, the substituted dialkylarylsilyl, the substituted alkyldiarylsilyl, the substituted triarylsilyl, and the substituted fused ring consisting of an aliphatic ring and an aromatic ring can each be independently modified in the present disclosure by at least one substituent from the group consisting of deuterium; halogen; cyano; carboxyl; nitro; hydroxyl; phosphine oxide; (C1-C 30 )-Alkyl, unsubstituted or substituted by deuterium; halogen-(C1-C 30 )-alkyl; (C2-C 30 )-Alkenyl; (C2-C 30 )-Alkynyl; (C1-C 30 )-Alkoxy; (C1-C 30 )-Alkylthio; (C3-C 30 )-Cycloalkyl; (C3-C 30)-cycloalkenyl; (3- to 7-membered) heterocycloalkyl; (C6-C 30 )-Aryloxy; (C6-C 30 )-Arylthio; (3- to 30-membered) heteroaryl, unsubstituted or modified by at least one of deuterium and (C6-C 30 )-aryl is substituted; (C6-C 30 )-Aryl, unsubstituted or by at least one of deuterium, (C1-C 30 )-Alkyl, (C6-C 30 )-aryl and (3- to 30-membered) heteroaryl is substituted; Tri-(C1-C 30 )-Alkylsilyl; Tri-(C6-C 30 )-arylsilyl; Di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl; (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl; amino; Mono- or Di-(C1-C 30 )-alkylamino; Mono- or Di-(C2-C 30 )-alkenylamino; Mono- or Di-(C6-C 30 )-arylamino; Mono- or di-(3- to 30-membered)-heteroarylamino; (C1-C 30 )-Alkyl-(C2-C 30 )-alkenylamino; (C1-C 30 )-Alkyl-(C6-C 30 )-arylamino; (C1-C 30)-Alkyl-(3- bis 30-gliedrigem)-heteroarylamino; (C2-C 30 )-Alkenyl-(C6-C 30 )-arylamino; (C2-C 30 )-Alkenyl-(3- bis 30-gliedrigem)-heteroarylamino; (C6-C 30 )-Aryl-(3- bis 30-gliedrigem)-heteroarylamino; (C1-C 30 )-Alkylcarbonyl; (C1-C 30 )-Alkoxycarbonyl; (C6-C 30 )-Arylcarbonyl; Di-(C6-C 30 )-arylboronyl; (C6-C 30 )-Arylphosphin; Di-(C1-C 30 )-alkylboronyl; (C1-C 30 )-Alkyl-(C6-C 30 )-arylboronyl; (C6-C 30 )-Aryl-(C1-C 30 )-alkyl und (C1-C 30 )-Alkyl-(C6-C 30 )-aryl substituiert sein.

[0025] In the present disclosure, “a combination thereof” refers to a combination of one or more elements from the relevant list to form a known or chemically stable arrangement that is conceivable to a person skilled in the art from the relevant list. For example, alkyl and deuterium can be combined to form a partially or fully deuterated alkyl group; halogen and alkyl can be combined to form a halogenated alkyl substituent; and halogen, alkyl, and aryl can be combined to form a halogenated arylalkyl.For example, a preferred combination of substituents may contain up to 50 atoms that are not hydrogen or deuterium, or up to 40 atoms that are not hydrogen or deuterium, or up to 30 atoms that are not hydrogen or deuterium, or in many cases, a preferred combination of substituents may include up to 20 atoms that are not hydrogen or deuterium.

[0026] If a substituent is not specified in the chemical formula or compound structure of this disclosure, this may mean that all possible positions for the substituents are hydrogen or deuterium. In the case of deuterium, this means that it is an isotope of hydrogen, and some of the hydrogen atoms may be the isotope deuterium, in which case the deuterium content can range from 0% to 100%. If, in this disclosure, in cases where a substituent is not specified in the chemical formula or compound structure, deuterium is not explicitly excluded (e.g., 0% deuterium, 100% hydrogen), and all substituents are hydrogen, then hydrogen and deuterium may be used in a mixture in a compound. Deuterium is one of the isotopes of hydrogen and is an element with a deuteron, which consists of a proton and a neutron, as its nucleus.It can be represented as hydrogen-2, whose element symbol is also D or . 2 The isotopes are atoms with the same atomic number (Z) but different mass numbers (A) and can also be interpreted as elements with the same number of protons but different numbers of neutrons.

[0027] In the following, an organic electroluminescent device comprising several host materials according to the present disclosure is described in detail.

[0028] An organic electroluminescent device according to the present disclosure comprises an anode, a cathode, a first light-emitting layer arranged between the anode and the cathode, and a second light-emitting layer arranged between the first light-emitting layer and the cathode. The first light-emitting layer contains a first compound, represented by Formula 1 or Formula 3 below, as a first host material.

[0029] In Formula 1, R1 to R 16 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30)-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring, with the proviso that at least one of R1 to R 16 -(L) a -(Ar) b is, preferably at least two of R1 to R 16 -(L) a -(Ar) b They can be.

[0030] According to one embodiment of the present disclosure, R1 to R 16 each independently for hydrogen, deuterium, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl or a substituted or unsubstituted fused ring of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring. According to another embodiment of the present disclosure, R1 to R 16 each independently for hydrogen, deuterium, a substituted or unsubstituted (C1-C 20 )-Alkyl, a substituted or unsubstituted (C6-C 20)-aryl or a substituted or unsubstituted (3- to 20-membered) heteroaryl. For example, R1 to R 16each independently hydrogen, deuterium, phenyl unsubstituted or naphthyl substituted, biphenyl, naphthyl unsubstituted or phenyl or naphthyl substituted, phenanthrenyl unsubstituted or phenyl substituted, unsubstituted 15-membered heteroaryl, triphenylenyl, anthracenyl unsubstituted or phenyl substituted, o-terphenyl, m-terphenyl, p-terphenyl, 2,3-benzophenanthrenyl unsubstituted or phenyl substituted, dimethylfluorenyl, dimethyl-2,3-benzofluorenyl, benzo[b]naphtho[2,3-d]furanyl, benzo[b]naphtho[1,2-d]furanyl, Phenanthro[4,5-bcd]furanyl, dibenzofuranyl, dibenzothiophenyl or carbazolyl, unsubstituted or substituted by phenyl, wherein these groups may be further substituted by deuterium, provided that at least one of R1 to R 16 -(L) a -(Ar) b is, and preferably two from R1 to R 16 by -(L)a -(Ar) b may be substituted.

[0031] According to one embodiment of the present invention, formula 1 is represented by one of the following formulas 1-1 to 1-4:

[0032] In formula 1, L independently represents a single bond, a substituted or unsubstituted (C6-C 30 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene. According to one embodiment of the present disclosure, L can each independently represent a single bond, a substituted or unsubstituted (C6-C 25 )-arylene or a substituted or unsubstituted (3- to 25-membered) heteroarylene. According to another embodiment of the present disclosure, L independently represents a single bond, a substituted or unsubstituted (C6-C) 20)-arylene or a substituted or unsubstituted (3- to 20-membered) heteroarylene. For example, L can be a single bond, a phenylene, a biphenylene, a naphthylene, a phenanthrenylene, an anthracenylene, a 2,3-benzophenanthrenylene, or a carbazolylene, with these groups potentially being further substituted by deuterium.

[0033] In Formula 1, Ar independently represents a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl. According to one embodiment of the present disclosure, Ar in each case independently represents a substituted or unsubstituted (C6-C 25 )-aryl or a substituted or unsubstituted (3- to 25-membered) heteroaryl. According to another embodiment of the present disclosure, Ar in each case independently represents a substituted or unsubstituted (C6-C 20)-aryl or a substituted or unsubstituted (3- to 20-membered) heteroaryl. For example, Ar can independently react with hydrogen, deuterium, phenyl (unsubstituted or naphthyl substituted), biphenyl, naphthyl (unsubstituted or phenyl or naphthyl substituted), phenanthrenyl (unsubstituted or phenyl substituted), unsubstituted 15-membered heteroaryl, triphenylenyl, anthracenyl (unsubstituted or phenyl substituted), o-terphenyl, m-terphenyl, p-terphenyl, 2,3-benzophenanthrenyl (unsubstituted or phenyl substituted), dimethylfluorenyl, dimethyl-2,3-benzofluorenyl, benzo[b]naphtho[2,3-d]furanyl, benzo[b]naphtho[1,2-d]furanyl, Phenanthro[4,5-bcd]furanyl, dibenzofuranyl, dibenzothiophenyl or carbazolyl, which may be unsubstituted or substituted by phenyl, these groups may be further substituted by deuterium.

[0034] Here, L and Ar can be the same or different from each other.

[0035] In formula 1, a represents an integer from 1 to 4 and b represents an integer from 1 to 4, and preferably a can be an integer from 1 to 2 and b can be an integer from 1 to 2.

[0036] In Formula 3, R 50 to R 61 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 3o )-ring. According to one embodiment of the present disclosure, R 50 to R 61 each independently for hydrogen, deuterium, a halogen, a substituted or unsubstituted (C6-C 30 )-aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl or a substituted or unsubstituted fused ring of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30)-ring. According to another embodiment of the present disclosure, R 50 to R 61 each independently for hydrogen, deuterium, a halogen, a substituted or unsubstituted (C6-C 20 )-aryl, a substituted or unsubstituted (3- to 20-membered) heteroaryl or a substituted or unsubstituted fused ring of an aliphatic (C3-C 20 )-ring and an aromatic (C6-C 20 )-ring. According to another embodiment of the present disclosure, R 50 to R 61 each independently for hydrogen or deuterium. For example, R 50 to R 61each independently hydrogen; deuterium; a phenyl that is unsubstituted or substituted by fluorine, naphthyl, phenanthrenyl, phenanthro[4,5-bcd]furanyl or phenanthro[4,5-bcd]thiophenyl; a biphenyl; a naphthyl that is unsubstituted or substituted by phenyl that is unsubstituted or by naphthyl, biphenyl, naphthyl that is unsubstituted or by phenyl, phenanthrenyl, triphenylenyl or terphenyl; a phenanthrenyl that is unsubstituted or substituted by deuterium or phenyl; a dimethyl-4,5-methylenephenanthrenyl; a phenanthro[4,5-bcd]furanyl that is unsubstituted or substituted by deuterium or phenyl; a phenanthro[4,5-bcd]thiophenyl, unsubstituted or substituted by phenyl; or a phenanthro[4,5-bcd]carbazolyl, substituted by phenyl, these groups being further substituted by deuterium; with the proviso that in formula 3 at least one of R 50 to R61 -L 30 -Ar 30 is and preferably R 50 -L 30 -Ar 3o may be.

[0037] L 30 stands for a single bond, a substituted or unsubstituted (C6-C 12 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene. According to one embodiment of the present disclosure, L 30 for a single bond, a substituted or unsubstituted (C6-C 12 )-arylene or a substituted or unsubstituted (3- to 20-membered) heteroarylene. For example, L 30 a single bond, a phenylene that is unsubstituted or substituted by fluorine, a biphenylene, a naphthylene, a phenanthro[4,5-bcd]furanylene, a phenanthro[4,5-bcd]thiophenylene or a phenanthro[4,5-bcd]carbazolylene, these groups may be further substituted by deuterium.

[0038] Ar 30is represented by the following formula B-1 or formula B-2, where in formula B-1 any one of R 62 to R 71 with L 30 is linked.

[0039] In Formula B-1, R 62 to R 71 each independently with L 30 linked or stand for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30)-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring. According to one embodiment of the present disclosure, R 62 to R 71 each independently with L 30 linked or stand for hydrogen, deuterium, a substituted or unsubstituted (C6-C 30 )-aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl or a substituted or unsubstituted fused ring of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C30 )-ring. According to another embodiment of the present disclosure, R 62 to R 71 each independently with L 30 linked or stand for hydrogen, deuterium, a substituted or unsubstituted (C6-C 20 )-aryl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 20 )-ring and an aromatic (C6-C 20 )-ring. For example, R 62 to R 71 each independently with L 30 linked or can be hydrogen, deuterium, a phenyl that is unsubstituted or substituted by deuterium, or a naphthyl that is unsubstituted or substituted by deuterium.

[0040] In Formula B-1, R 67 and R 68 together to -O-, -S-, -NR 80 - or -CR 81 R 82 -be linked.

[0041] In Formula B-1, R 80 , R 81 and R 82each independently for a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl or a substituted or unsubstituted (C3-C 30 )-Cycloalkyl; R 81 and R 82 can be linked together to form one or more rings. According to one embodiment of the present disclosure, R 80 , R 81 and R 82 each independently for a substituted or unsubstituted (C1-C 20 )-Alkyl or a substituted or unsubstituted (C6-C 20 )-Aryl. For example, R 80 , R 81 and R 82 Each can be either a methyl or a phenyl, independently.

[0042] In formula B-2, Ar1 and Ar2 each independently represent hydrogen, deuterium, or a substituted or unsubstituted (C6-C) 30)Aryl, provided that Ar1 and Ar2 are not both hydrogen.

[0043] In Formula B-2, R 100 to R 104 Each independently for hydrogen or deuterium.

[0044] According to one embodiment of the present disclosure, the second light-emitting layer contains a second compound, represented by the following formula 2, as a second host material.

[0045] In Formula 2, Ar 11 for a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl. According to one embodiment of the present disclosure, Ar 11 for a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (13- to 30-membered) heteroaryl. According to another embodiment of the present disclosure, Ar 11for a substituted or unsubstituted (C6-C 25 )-aryl or a substituted or unsubstituted (13- to 25-membered) heteroaryl. For example, Ar 11Phenyl, unsubstituted or substituted by naphthyl; naphthyl, unsubstituted or substituted by phenyl, naphthyl, or biphenyl; biphenyl, unsubstituted or substituted by naphthyl; o-terphenyl, unsubstituted or substituted by phenyl; m-terphenyl; p-terphenyl; dimethylfluorenyl; diphenylfluorenyl; phenanthrenyl, unsubstituted or substituted by phenyl; carbazolyl, unsubstituted or substituted by phenyl; 1,2-benzocarbazolyl; 2,3-benzocarbazolyl; 3,4-benzocarbazolyl; dibenzofuranyl; dibenzothiophenyl; benzo[b]naphtho[2,3-d]furanyl; benzo[b]naphtho[2,3-d]thiophenyl; Dimethyl-2,3-benzofluorenyl; Dimethyl-3,4-benzofluorenyl; Spirobifluorenyl or Triphenylenyl, these groups being further substituted by deuterium.

[0046] In Formula 2, R 17 to R 24each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30)-arylsilyl, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring or -L 13 -N(Ar 13 )(Ar 14 ). According to one embodiment of the present disclosure, R 17 to R 24 each independently for hydrogen, deuterium, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted fused ring of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring or -L 13 -N(Ar 13 )(Ar 14 For example, R 17 to R 24 Each can be either hydrogen or deuterium, independently of each other.

[0047] In Formula 2, Ar Afor a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl or the following formula A-1.

[0048] According to one embodiment of the present disclosure, Ar A in formula 2 for a substituted or unsubstituted (C6-C 25 )-Aryl, a substituted or unsubstituted (3- to 25-membered) heteroaryl or formula A-1. According to one embodiment of the present disclosure, Ar A for a substituted or unsubstituted (C6-C 20 )-Aryl, a substituted or unsubstituted (3- to 20-membered) heteroaryl or formula A-1. For example, Ar APhenyl, unsubstituted or substituted by naphthyl or phenanthrenyl; naphthyl, unsubstituted or substituted by phenyl, biphenyl or naphthyl; biphenyl, unsubstituted or substituted by naphthyl; phenanthrenyl, unsubstituted or substituted by phenyl; o-terphenyl; m-terphenyl; p-terphenyl; phenanthro[4,5-bcd]furanyl; 2,3-diphenyl-1,2-dihydronaphthyl; or formula A-1, wherein these groups may be further substituted by deuterium.

[0049] In Formula A-1, T1 stands for O, S, CR a R b or NR c For example, T1 can be O, S, or CR a R b be.

[0050] In formula A-1, ring A and ring B each independently represent a substituted or unsubstituted (C6-C 30)-arene ring or a substituted or unsubstituted (3- to 30-membered) heteroarene ring. According to one embodiment of the present disclosure, ring A and ring B each independently represent a substituted or unsubstituted (C6-C 25 )-Arene ring. According to another embodiment of the present disclosure, ring A and ring B each independently represent a substituted or unsubstituted (C6 -C 18 )-Arene ring. For example, ring A and ring B can each independently be a substituted or unsubstituted benzene ring or naphthalene ring, and their substituents can be at least one from the group consisting of deuterium, phenyl, naphthyl, biphenyl and combinations thereof.

[0051] In Formula A-1, R 25 and R 26 Each independently a position that starts with L 12is linked, or stand for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30)-arylsilyl, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring or - L 13 -N(Ar 13 )(Ar 14 ). According to one embodiment of the present disclosure, R 25 and R 26 each independently for one with L 12 linked site or for hydrogen, deuterium or a substituted or unsubstituted (C6-C 25 )Aryl. According to another embodiment of the present disclosure, R 25 and R 26 each independently for one with L 12 linked site or stand for hydrogen, deuterium or a (C6-C 18 )-Aryl, which is unsubstituted or substituted by deuterium. For example, R 25 and R 26 each independently for a position that starts with L 12linked, or for hydrogen, deuterium, phenyl, naphthyl or biphenyl etc., where these groups may be further substituted by deuterium.

[0052] R a and R b Each independently represents a substituted or unsubstituted (C1-C 30 )-Alkyl or a substituted or unsubstituted (C6-C 30 )-aryl or can be linked together to form one or more rings. According to one embodiment of the present disclosure, R a and R b each independently for a substituted or unsubstituted (C1-C 20 )-Alkyl. According to one embodiment of the present disclosure, R a and R b each independently for a substituted or unsubstituted (C1-C 10 )-Alkyl. For example, R a and R b Each can be an independent methyl group, either unsubstituted or substituted by deuterium.

[0053] R c stands for a substituted or unsubstituted (C1-C 30 )-Alkyl or a substituted or unsubstituted (C6-C 30 )-Aryl. According to one embodiment of the present disclosure, R c for a substituted or unsubstituted (C1-C 20 )-Alkyl or a substituted or unsubstituted (C6-C 20 )-Aryl.

[0054] L 11 to L 13 Each independently represents a single bond, a substituted or unsubstituted (C6-C 30 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene.

[0055] According to one embodiment of the present disclosure, L 11 to L 13 each independently for a single bond, a substituted or unsubstituted (C6-C 25)-arylene or a substituted or unsubstituted (5- to 25-membered) heteroarylene. According to another embodiment of the present disclosure, L 11 to L 13 each independently for a single bond, a substituted or unsubstituted (C6-C 18 )-arylene or a substituted or unsubstituted (5- to 20-membered) heteroarylene. For example, L 11 to L 13 Each group can independently represent a single bond, a phenylene, a naphthylene or a phenanthrenylene, with these groups potentially being further substituted by deuterium.

[0056] Ar 13 and Ar 14 Each independently represents hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30)-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl or a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl.

[0057] Meanwhile, the first light-emitting layer and the second light-emitting layer are in direct contact with each other.

[0058] According to one embodiment of the present disclosure, Ar 11 and Ar A each independently selected from the group consisting of a phenyl that is unsubstituted or substituted by deuterium, a biphenyl that is unsubstituted or substituted by deuterium, a terphenyl that is unsubstituted or substituted by deuterium, a naphthyl that is unsubstituted or substituted by deuterium, a phenanthrenyl that is unsubstituted or substituted by deuterium, or a combination thereof. According to one embodiment of the present disclosure, Ar 11selected from the group consisting of a phenyl that is unsubstituted or substituted by deuterium, a biphenyl that is unsubstituted or substituted by deuterium, a terphenyl that is unsubstituted or substituted by deuterium, a naphthyl that is unsubstituted or substituted by deuterium, a phenanthrenyl that is unsubstituted or substituted by deuterium, or a combination thereof, and is Ar A a dibenzofuranyl that is unsubstituted or substituted by deuterium, or a dibenzothiophenyl that is unsubstituted or substituted by deuterium.

[0059] According to one embodiment of the present disclosure, Ar A represented by the following formula b-1.

[0060] In formula b-1, R 27 to R 32 Each independently a position that starts with L 12is linked, or stand for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30)-arylsilyl, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring or - L 13 -N(Ar 13 )(Ar 14 ) or can be linked with a neighboring substituent to form one or more rings. According to another embodiment of the present disclosure, R 27 to R 32 Each independently a position that starts with L 12 is linked, or stand for hydrogen, deuterium, a substituted or unsubstituted (C6-C 25 )-aryl or can be linked to a neighboring substituent to form one or more rings. According to another embodiment of the present disclosure, R 27 to R 32 Each independently a position that starts with L 12 is linked, or stand for hydrogen, deuterium, a substituted or unsubstituted (C6-C 18)-aryl or can be linked with a neighboring substituent to form a substituted or unsubstituted (3- to 20-membered) mono- or polycyclic aromatic ring. For example, R 27 to R 32 Each independently a position that starts with L 12 is linked, or represent a phenyl that is unsubstituted or substituted by deuterium, a biphenyl that is unsubstituted or substituted by deuterium, a naphthyl that is unsubstituted or substituted by deuterium, or may be linked with a neighboring substituent to form a benzene ring that is unsubstituted or substituted by deuterium.

[0061] T1, R 25 , R 26 , L 13 , Ar 13 and Ar 14 are defined as in formula 2 above.

[0062] According to one embodiment of the present disclosure, formula 2 is represented by the following formulas 2-1 and 2-2: wherein in formulas 2-1 and 2-2 R 27 to R 32 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring or -L 13 -N(Ar 13 )(Ar 14 ) may be standing or linked with a neighboring substituent to form one or more rings.

[0063] In formulas 2-1 and 2-2, R 33 to R 35 Each independently a position that starts with L 12 is linked, or stand for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C30 )-Cycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring or - L 13 -N(Ar 13 )(Ar 14 ) or can be linked to a neighboring substituent to form one or more rings. According to one embodiment of the present disclosure, R 33 to R 35 Each independently a position that starts with L 12is linked, or stand for hydrogen, deuterium, or a substituted or unsubstituted (C6-C 25 )-aryl or can be linked to a neighboring substituent to form one or more rings. According to another embodiment of the present disclosure, R 33 to R 35 Each independently a position that starts with L 12 is linked, or stand for hydrogen, deuterium, or a substituted or unsubstituted (C6-C 18 )-aryl or can be linked with a neighboring substituent to form a substituted or unsubstituted (3- to 20-membered) mono- or polycyclic aromatic ring. For example, R 33 to R 35 Each independently a position that starts with L 12is linked, or represent a phenyl that is unsubstituted or substituted by deuterium, a biphenyl that is unsubstituted or substituted by deuterium, or a naphthyl that is unsubstituted or substituted by deuterium, or may be linked with a neighboring substituent to form a benzene ring that is unsubstituted or substituted by deuterium.

[0064] T1, R 17 to R 26 , L 11 to L 13 , Ar 11 , Ar 13 and Ar 14 are as defined in Formula 2.

[0065] According to one embodiment of the present disclosure, at least one of formulas 1 and 2 comprises a compound comprising deuterium.

[0066] The compound represented by formula 1 may be selected from the following compounds, but is not limited to them.

[0067] In the above connections, D means nthat n hydrogen atoms are replaced by deuterium, where n is an integer from 1 up to the maximum number of hydrogen atoms in the compound. In particular, n is at least 1 and is an integer as large as the maximum number of hydrogen atoms in the compound. According to one embodiment of the present disclosure, when hydrogen is replaced by deuterium in any of the compounds represented by Formula 1, the deuterium substitution rate is preferably about 100% or less of the total number of hydrogen atoms, more preferably about 90% or less, still more preferably about 85% or less, and most preferably about 80% or less.The compound of formula 1 substituted with the above deuterium substitution rate can increase the bond dissociation energy as a result of deuteration, thereby increasing the stability of the compound, and an organic electroluminescent device containing the compound can exhibit improved lifetime properties.

[0068] According to one embodiment of the present disclosure, the compound represented by formula 2 may be selected from, but is not limited to, the following compounds.

[0069] In the above connections, D means nthat n hydrogen atoms are replaced by deuterium, where n is an integer from 1 up to the maximum number of hydrogen atoms in the compound. In particular, n is at least 1 and is an integer as large as the maximum number of hydrogen atoms in the compound. According to one embodiment of the present disclosure, when hydrogen is replaced by deuterium in any of the compounds represented by formula 2, the deuterium substitution rate is preferably about 100% or less of the total number of hydrogen atoms, more preferably about 90% or less, still more preferably about 85% or less, and most preferably about 80% or less.The compound of formula 2 substituted with the above deuterium substitution rate can increase the bond dissociation energy as a result of deuteration, thereby increasing the stability of the compound, and an organic electroluminescent device containing the compound can exhibit improved lifetime properties.

[0070] According to one embodiment of the present disclosure, the compound represented by formula 3 may be selected from, but is not limited to, the following compounds.

[0071] In the above connections, D means nthat n hydrogen atoms are replaced by deuterium, where n is an integer from 1 up to the maximum number of hydrogen atoms in the compound. In particular, n is at least 1 and is an integer as large as the maximum number of hydrogen atoms in the compound. According to one embodiment of the present disclosure, when hydrogen is replaced by deuterium in one of the compounds described by formula 3, the deuterium substitution rate is preferably about 100% or less of the total number of hydrogen atoms, more preferably about 90% or less, still more preferably about 85% or less, and most preferably about 80% or less.The compound of formula 3 substituted with the above deuterium substitution rate can increase the bond dissociation energy as a result of deuteration, thereby increasing the stability of the compound, and an organic electroluminescent device containing the compound can exhibit improved lifetime properties.

[0072] The compound represented by formula 1 according to the present disclosure can be synthesized by reference to synthesis methods known to those skilled in the art. For example, it can be prepared by reference to the following reaction scheme 1, but is not limited thereto.

[0073] In reaction scheme 1, R1 to R 16 , L, Ar, a and b as defined in Formula 1.

[0074] The compound represented by formula 2 according to the present disclosure can be synthesized by reference to synthesis methods known to those skilled in the art. For example, it can be prepared by reference to the following reaction scheme 2, but is not limited thereto.

[0075] In reaction scheme 2, Ar A , Ar 11 , R 17 to R 24 , L 11 and L 12 as defined in Formula 2.

[0076] The compound represented by formula 3 according to the present disclosure can be synthesized by reference to synthesis methods known to those skilled in the art. For example, it can be prepared by reference to the following reaction scheme 3, but is not limited thereto.

[0077] In reaction scheme 3, R 50 to R 61 , L 30 and Ar 30 as defined in Formula 3.

[0078] Although illustrative synthesis examples of the compounds represented by formulas 1, 2, and 3 are described above, it is readily apparent to the person skilled in the art that they all rely on a Suzuki cross-coupling reaction, a Wittig reaction, a Buchwald-Hartwig cross-coupling reaction, a Miyaura borylation reaction, an N-arylation reaction, an H-Mont-mediated etherification reaction, an intramolecular acid-induced cyclization reaction, a Pd(II)-catalyzed oxidative cyclization reaction, a Grignard reaction, a Heck reaction, a cyclodehydration reaction, an S N 1-Substitution reaction, one S N 2-substitution reaction, a phosphine-mediated reductive cyclization reaction, etc., and the above reactions proceed even when substituents defined in formulas 1 to 3, which are different from the substituents in the specific synthesis examples, are bound.

[0079] The organic electroluminescent compound is represented by the following formula 11 according to one embodiment of the present disclosure and comprises at least one deuterium.

[0080] In Formula 11, R1 to R 16 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30)-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 3o )-ring. According to one embodiment of the present disclosure, R1 to R 16 each independently for hydrogen, deuterium, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30)-Cycloalkyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl or a substituted or unsubstituted fused ring of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring. According to another embodiment of the present disclosure, R1 to R 16 each independently for hydrogen, deuterium, a substituted or unsubstituted (C1-C 20 )-Alkyl, a substituted or unsubstituted (C6-C 20 )-aryl or a substituted or unsubstituted (3- to 20-membered) heteroaryl. For example, R1 to R 16each independently hydrogen, deuterium, a phenyl that is unsubstituted or substituted by naphthyl, biphenyl, naphthyl that is unsubstituted or substituted by phenyl or naphthyl, phenanthrenyl that is unsubstituted or substituted by phenyl, unsubstituted 15-membered heteroaryl, triphenylenyl, anthracenyl that is unsubstituted or substituted by phenyl, o-terphenyl, m-terphenyl, p-terphenyl, 2,3-benzophenanthrenyl that is unsubstituted or substituted by phenyl, dimethylfluorenyl, dimethyl-2,3-benzofluorenyl, benzo[b]naphtho[2,3-d]furanyl, benzo[b]naphtho[1,2-d]furanyl, Phenanthro[4,5-bcd]furanyl, dibenzofuranyl, dibenzothiophenyl or carbazolyl, unsubstituted or substituted by phenyl, wherein these groups may be further substituted by deuterium; with the proviso that at least one of R1 to R 16 for -(L) a -(Ar) b stands.

[0081] In formula 11, L independently represents a single bond, a substituted or unsubstituted (C6-C 30 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene. According to one embodiment of the present disclosure, L can each independently represent a single bond, a substituted or unsubstituted (C6-C 25 )-arylene or a substituted or unsubstituted (3- to 25-membered) heteroarylene. According to another embodiment of the present disclosure, L independently represents a single bond, a substituted or unsubstituted (C6-C) 20)-arylene or a substituted or unsubstituted (3- to 20-membered) heteroarylene. For example, L can be a single bond, a phenylene, a biphenylene, a naphthylene, a phenanthrenylene, an anthracenylene, a 2,3-benzophenanthrenylene, or a carbazolylene, with these groups potentially being further substituted by deuterium.

[0082] In formula 11, Ar independently represents a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl. According to one embodiment of the present disclosure, Ar in each case independently represents a substituted or unsubstituted (C6-C 25 )-aryl or a substituted or unsubstituted (3- to 25-membered) heteroaryl. According to another embodiment of the present disclosure, Ar in each case independently represents a substituted or unsubstituted (C6-C 20)-aryl or a substituted or unsubstituted (3- to 20-membered) heteroaryl. For example, Ar can independently react with hydrogen, deuterium, a phenyl that is unsubstituted or substituted by naphthyl, biphenyl, naphthyl that is unsubstituted or substituted by phenyl or naphthyl, phenanthrenyl that is unsubstituted or substituted by phenyl, unsubstituted 15-membered heteroaryl, triphenylenyl, anthracenyl that is unsubstituted or substituted by phenyl, o-terphenyl, m-terphenyl, p-terphenyl, 2,3-benzophenanthrenyl that is unsubstituted or substituted by phenyl, dimethylfluorenyl, dimethyl-2,3-benzofluorenyl, benzo[b]naphtho[2,3-d]furanyl, benzo[b]naphtho[1,2-d]furanyl, Phenanthro[4,5-bcd]furanyl, dibenzofuranyl, dibenzothiophenyl or carbazolyl, unsubstituted or substituted by phenyl, wherein these groups may be further substituted by deuterium.

[0083] Here, L and Ar can be the same or different from each other.

[0084] In formula 11, a represents an integer from 1 to 4 and b represents an integer from 1 to 4, and preferably a can be an integer from 1 to 2 and b can be an integer from 1 to 2.

[0085] The residual percentage of hydrogen in the organic electroluminescent compound can be 10% to 20%, preferably 20% to 30%.

[0086] The compound represented by formula 11 may be selected from the following compounds, but is not limited to them.

[0087] In the above connections, D means nthat n hydrogen atoms are replaced by deuterium, where n is an integer from 1 up to the maximum number of hydrogen atoms in the compound. In particular, n is at least 1 and is an integer as large as the maximum number of hydrogen atoms in the compound. According to one embodiment of the present disclosure, when hydrogen is replaced by deuterium in one of the compounds described by formula 11, the deuterium substitution rate is preferably about 100% or less of the total number of hydrogen atoms, more preferably about 90% or less, still more preferably about 85% or less, and most preferably about 80% or less.The compound of formula 11 substituted with the above deuterium substitution rate can increase the bond dissociation energy as a result of deuteration, thereby increasing the stability of the compound, and an organic electroluminescent device containing the compound can exhibit improved lifetime properties.

[0088] The organic electroluminescent compound is represented by the following formula 12 according to one embodiment of the present disclosure.

[0089] In Formula 12, R1 to R 16 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 3o )-ring. According to one embodiment of the present disclosure, R1 to R 16 each independently for hydrogen, deuterium, a substituted or unsubstituted (C1-C 30)-Alkyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl or a substituted or unsubstituted fused ring of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 3o )-ring. According to another embodiment of the present disclosure, R1 to R 16 each independently for hydrogen, deuterium, a substituted or unsubstituted (C6-C 20 )-aryl or a substituted or unsubstituted (3- to 20-membered) heteroaryl. For example, R1 to R 16 Each can be independently hydrogen, deuterium, a phenyl or an unsubstituted 15-membered heteroaryl, with these groups potentially being further substituted by deuterium. with the proviso that at least one of R1 to R 16 represented by the following formula 12-1.

[0090] In Formula 12-1, X stands for O, S, CR 44 R 45 or NR 46 .

[0091] In formula 12-1, L1 represents a single bond, a substituted or unsubstituted (C6-C 30 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene. According to one embodiment of the present disclosure, L1 represents a single bond, a substituted or unsubstituted (C6-C 20 )-arylene or a substituted or unsubstituted (3- to 20-membered) heteroarylene. For example, L1 can be a single bond.

[0092] In Formula 12-1, L1 can be equipped with one of R 36 to R 46 be linked.

[0093] In Formula 12-1, R 36 to R 46a position linked to L1, or each independently represent hydrogen, deuterium, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl. According to one embodiment of the present disclosure, R 36 to R 46 each independently for hydrogen, deuterium, a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl. According to another embodiment of the present disclosure, R 36 to R 46 each independently for hydrogen, deuterium, a substituted or unsubstituted (C6-C 20)-aryl or a substituted or unsubstituted (3- to 20-membered) heteroaryl. For example, R 36 to R 46 Each can be independently hydrogen, deuterium, a phenyl or an unsubstituted 15-membered heteroaryl.

[0094] The compound represented by formula 12 may be selected from the following compounds, but is not limited to them.

[0095] In the above connections, D means nthat n hydrogen atoms are replaced by deuterium, where n is an integer from 1 up to the maximum number of hydrogen atoms in the compound. In particular, n is at least 1 and is an integer as large as the maximum number of hydrogen atoms in the compound. According to one embodiment of the present disclosure, when hydrogen is replaced by deuterium in one of the compounds described by formula 12, the deuterium substitution rate is preferably about 100% or less of the total number of hydrogen atoms, more preferably about 90% or less, still more preferably about 85% or less, and most preferably about 80% or less.The compound of formula 12 substituted with the above deuterium substitution rate can increase the bond dissociation energy as a result of deuteration, thereby increasing the stability of the compound, and an organic electroluminescent device containing the compound can exhibit improved lifetime properties.

[0096] The organic electroluminescent compound is represented by the following formula 13 according to one embodiment of the present disclosure.

[0097] In Formula 13, R 50 to R 61 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30)-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring. According to one embodiment of the present disclosure, R 50 to R 61each independently for hydrogen, deuterium, a substituted or unsubstituted (C6-C 30 )-aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl or a substituted or unsubstituted fused ring of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring. According to another embodiment of the present disclosure, R 50 to R 61 each independently for hydrogen, deuterium, a substituted or unsubstituted (C6-C 20 )-aryl, a substituted or unsubstituted (3- to 20-membered) heteroaryl or a substituted or unsubstituted fused ring of an aliphatic (C3-C 20 )-ring and an aromatic (C6-C 20 )-ring. For example, R 50 to R 61each independently hydrogen; deuterium; a phenyl that is unsubstituted or substituted by fluorine, naphthyl, phenanthrenyl, phenanthro[4,5-bcd]furanyl or phenanthro[4,5-bcd]thiophenyl; a biphenyl; a naphthyl that is unsubstituted or substituted by phenanthrenyl; a phenanthrenyl that is unsubstituted or substituted by deuterium or phenyl; a dimethyl-4,5-methylenephenanthrenyl; a phenanthro[4,5-bcd]furanyl that is unsubstituted or substituted by deuterium or phenyl; a phenanthro[4,5-bcd]thiophenyl that is unsubstituted or substituted by phenyl; or a phenanthro[4,5-bcd]carbazolyl substituted by phenyl, these groups being further substituted by deuterium; with the proviso that at least one of R 50 to R 61 -L 30 -Ar 30 is and preferably R 50 -L 30 -Ar 30 may be.

[0098] L 30stands for a single bond, a substituted or unsubstituted (C6-C 12 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene. According to one embodiment of the present disclosure, L 30 for a single bond, a substituted or unsubstituted (C6-C 12 )-arylene or a substituted or unsubstituted (3- to 20-membered) heteroarylene. For example, L 30 a single bond, a phenylene that is unsubstituted or substituted by fluorine, a biphenylene, a naphthylene, a phenanthro[4,5-bcd]furanylene, a phenanthro[4,5-bcd]thiophenylene or a phenanthro[4,5-bcd]carbazolylene, these groups may be further substituted by deuterium.

[0099] Ar 30 is represented by the following formula B-1.

[0100] In formula B-1, any one of R 62 to R 71 with L 30 linked.

[0101] In formula B-1, any one of R 62 to R 71 with L 30 linked or they each stand independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30)-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring. According to one embodiment of the present disclosure, R 62 to R 71 each independently for hydrogen, deuterium, a substituted or unsubstituted (C6-C 30 )-aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl or a substituted or unsubstituted fused ring of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring. According to another embodiment of the present disclosure, R 62 to R 71 each independently for hydrogen, deuterium, a substituted or unsubstituted (C6-C20 )-aryl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 20 )-ring and an aromatic (C6-C 20 )-ring. For example, R 62 to R 71 Each can be independent hydrogen, deuterium, a phenyl that is unsubstituted or substituted by deuterium, or a naphthyl that is unsubstituted or substituted by deuterium.

[0102] R 67 and R 68 can be combined to form -O-, -S-, -NR 80 - or -CR 81 R 82 - be linked.

[0103] R 80 , R 81 and R 82 Each independently represents a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl or a substituted or unsubstituted (C3-C 30 )-Cycloalkyl; R81 and R 82 can be linked together to form one or more rings. According to one embodiment of the present disclosure, R 80 , R 81 and R 82 each independently for a substituted or unsubstituted (C1-C 20 )-Alkyl or a substituted or unsubstituted (C6-C 20 )-Aryl. For example, R 80 , R 81 and R 82 Each can be either a methyl or a phenyl, independently.

[0104] According to one embodiment of the present disclosure, formula B-1 is represented by the following formula B-1-1 or formula B-1-2:

[0105] In formulas B-1-1 and B-1-2, R 62 to R 66 and R 69 to R 71 as defined in formula B-1 above.

[0106] In formulas B-1-1 and B-1-2, R 67 and R 68 each independently with L 30linked or stand for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30)-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-Ring.

[0107] In formulas B-1-1 and B-1-2, T2 stands for -O-, -S-, -NR 80 - or -CR 81 R 82 -

[0108] In formulas B-1-1 and B-1-2, R 80 , R 81 and R 82 as defined in formula B-1 above.

[0109] According to one embodiment of the present invention, formula 13 is represented by one of the following formulas 13-2 to 13-5:

[0110] In formulas 13-2 to 13-5, T2 stands for -O-, -S-, -NR 80 - or -CR 81 R 82 -

[0111] In formulas 13-2 to 13-5, R 50 to R 71 , L 30 , R 80 , R 81 and R 82 as defined in Formula 13 above.

[0112] In formulas 13-2 to 13-5, L 30 with one of R 62 to R 71 linked.

[0113] According to one embodiment of the present disclosure, formula 13 is represented by the following formulas 13-6 or 13-7:

[0114] In formulas 13-6 and 13-7, R 50 to R 71 and L 30 as defined in Formula 13 above.

[0115] In formulas 13-6 and 13-7, L can 30 with one of R 64 to R 67 be linked.

[0116] According to one embodiment of the present disclosure, formula 13 contains deuterium.

[0117] The compound represented by formula 13 may be selected from the following compounds, but is not limited to them.

[0118] In the above connections, D means nthat n hydrogen atoms are replaced by deuterium, where n is an integer from 1 up to the maximum number of hydrogen atoms in the compound. In particular, n is at least 1 and is an integer as large as the maximum number of hydrogen atoms in the compound. According to one embodiment of the present disclosure, when hydrogen is replaced by deuterium in one of the compounds represented by formula 13, the deuterium substitution rate is preferably about 100% or less of the total number of hydrogen atoms, more preferably about 90% or less, still more preferably about 85% or less, and most preferably about 80% or less.The compound of formula 13 substituted with the above deuterium substitution rate can increase the bond dissociation energy as a result of deuteration, thereby increasing the stability of the compound, and an organic electroluminescent device containing the compound can exhibit improved lifetime properties.

[0119] The organic electroluminescent compound is represented by the following formula 31 according to one embodiment of the present disclosure.

[0120] In Formula 31, R 51 to R 61 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30)-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring. According to one embodiment of the present disclosure, R 51 to R 61each independently for hydrogen, deuterium, a halogen, a substituted or unsubstituted (C6-C 30 )-aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl or a substituted or unsubstituted fused ring of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring. According to another embodiment of the present disclosure, R 51 to R 61 each independently for hydrogen, deuterium, a halogen, a substituted or unsubstituted (C6-C 20 )-aryl, a substituted or unsubstituted (3- to 20-membered) heteroaryl or a substituted or unsubstituted fused ring of an aliphatic (C3-C 20 )-ring and an aromatic (C6-C 20 )-ring. For example, R 51 to R 61 Each can be either hydrogen or deuterium, independently of each other.

[0121] In formula 31, Ar1 and Ar2 each independently represent hydrogen, deuterium, or a substituted or unsubstituted (C6-C) 30 )-aryl, with the proviso that Ar1 and Ar2 are not both hydrogen. According to one embodiment of the present disclosure, Ar1 and Ar2 each independently represent hydrogen, deuterium, or a substituted or unsubstituted (C6-C 20 )-Aryl, with the proviso that Ar1 and Ar2 are not both hydrogen. For example, Ar1 and Ar2 can each independently be hydrogen; deuterium; a phenyl that is unsubstituted or substituted by naphthyl; a biphenyl; a terphenyl; a naphthyl that is unsubstituted or substituted by phenyl; a phenanthrenyl; a triphenylenyl, and Ar1 and Ar2 are not both hydrogen, and they can be further substituted by deuterium.

[0122] In Formula 31, R 100 to R 104 Each independently for hydrogen or deuterium.

[0123] The compound represented by formula 31 may be selected from the following compounds, but is not limited to them.

[0124] In the above connections, D means nthat n hydrogen atoms are replaced by deuterium, where n is an integer from 1 up to the maximum number of hydrogen atoms in the compound. In particular, n is at least 1 and is an integer as large as the maximum number of hydrogen atoms in the compound. According to one embodiment of the present disclosure, when hydrogen is replaced by deuterium in one of the compounds described by formula 31, the deuterium substitution rate is preferably about 100% or less of the total number of hydrogen atoms, more preferably about 90% or less, still more preferably about 85% or less, and most preferably about 80% or less.The compound of formula 31 substituted with the above deuterium substitution rate can increase the bond dissociation energy as a result of deuteration, thereby increasing the stability of the compound, and an organic electroluminescent device containing the compound can exhibit improved lifetime properties.

[0125] The organic electroluminescent compound is represented by the following formula 1-5 according to one embodiment of the present disclosure.

[0126] In Formula 5-1, R1 to R5 and R7 to R 16 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30)-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring. According to one embodiment of the present disclosure, R1 to R5 and R7 to R 16each independently for hydrogen, deuterium, a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl. According to another embodiment of the present disclosure, R1 to R5 and R7 to R 16 each independently for hydrogen, deuterium or a substituted or unsubstituted (C6-C 30 )-Aryl. For example, R1 to R5 and R7 to R 16 Each can be independent hydrogen, deuterium, or phenyl, etc.

[0127] In Formula 1-5, L stands for a single bond.

[0128] In formula 1-5, Ar represents a substituted or unsubstituted phenanthrenyl. For example, Ar can be a phenanthrenyl substituted by phenyl.

[0129] In formula 1-5, hydrogen in the above formula can be replaced by deuterium.

[0130] The compound represented by formula 1-5 may be selected from the following compounds, but is not limited to them.

[0131] In the above connections, D means nthat n hydrogen atoms are replaced by deuterium, where n is an integer from 1 up to the maximum number of hydrogen atoms in the compound. In particular, n is at least 1 and is an integer as large as the maximum number of hydrogen atoms in the compound. According to one embodiment of the present disclosure, when hydrogen is replaced by deuterium in one of the compounds represented by formulas 1-5, the deuterium substitution rate is preferably about 100% or less of the total number of hydrogen atoms, more preferably about 90% or less, still more preferably about 85% or less, and most preferably about 80% or less.The compound of formula 1-5 substituted with the above deuterium substitution rate can increase the bond dissociation energy as a result of deuteration, thereby increasing the stability of the compound, and an organic electroluminescent device containing the compound can exhibit improved lifetime properties.

[0132] The compound represented by formula 11 according to the present disclosure can be synthesized by reference to synthesis methods known to the skilled person. For example, it can be synthesized by reference to the following reaction scheme 3 or synthesis methods disclosed in Korean patent publications Nos. 10-2283849 and 10-1427457, etc., but is not limited thereto.

[0133] In reaction scheme 3, R1 to R 16 , L, Ar, a and b as defined in formula 11. Furthermore, in reaction scheme 3, D n, that n hydrogen atoms are replaced by deuterium, where n is an integer from 1 to the maximum number of hydrogen atoms in the compound.

[0134] The compound represented by formula 12 according to the present disclosure can be synthesized by reference to synthesis methods known to those skilled in the art. For example, it can be synthesized by reference to the following reaction scheme 4 or reaction scheme 5, but is not limited thereto.

[0135] In reaction schemes 4 and 5, R1 to R 16 , X, L1 and R 36 to R 43 as defined in Formula 12.

[0136] The compound represented by formula 13 according to the present disclosure can be synthesized by reference to synthesis methods known to those skilled in the art. For example, it can be synthesized by reference to the following reaction scheme 6, but is not limited thereto.

[0137] The compound represented by formula 31 according to the present disclosure can be synthesized by reference to synthesis methods known to those skilled in the art. For example, it can be synthesized by reference to the following reaction scheme 7, but is not limited thereto.

[0138] The compound represented by formulas 1-5 according to the present disclosure can be synthesized by reference to synthesis methods known to those skilled in the art. For example, it can be synthesized by reference to the following reaction scheme 8, but is not limited thereto.

[0139] Although illustrative synthesis examples of the compounds represented by formulas 11, 12, 13, 31 and 1-5 are described above, it is readily apparent to the person skilled in the art that they all proceed via a Suzuki cross-coupling reaction, a Wittig reaction, a Buchwald-Hartwig cross-coupling reaction, a Miyaura borylation reaction, an N-arylation reaction, an H-Mont-mediated etherification reaction, an intramolecular acid-induced cyclization reaction, a Pd(II)-catalyzed oxidative cyclization reaction, a Grignard reaction, a Heck reaction, a cyclodehydration reaction, an S N 1-Substitution reaction, one S N2-substitution reaction, a phosphine-mediated reductive cyclization reaction, etc., and the above reactions proceed even when substituents defined in formulas 11, 12, 13, 31 and 1-5, which are different from the substituents in the specific synthesis examples, are bound.

[0140] The organic electroluminescent compound represented by formula 11 above, which contains at least one deuterium, may have a residual percentage of hydrogen of 10% to 20%, preferably 20% to 30%.

[0141] The organic electroluminescent material according to one embodiment can be used as the light-emitting material for a white organic light-emitting device. Various structures have been proposed for the white organic light-emitting device, such as a method with parallel arrangements, a method with stacked arrangements, a method with color conversion material (CCM), etc., depending on the arrangement of red (R), green (G), yellowish-green (YG), or blue (B) light-emitting units. Furthermore, the organic electroluminescent compound according to one embodiment can also be applied to the organic electroluminescent device, which includes a quantum dot (QD).

[0142] In the organic electroluminescent device according to the present disclosure, the first light-emitting layer comprises, in addition to the compound described above, an additional host material, the second light-emitting layer comprises an additional host material, or both layers comprise an additional host material.

[0143] In the organic electroluminescent device according to the present disclosure, the light-emitting dopant of the first light-emitting layer is identical to or different from the light-emitting dopant of the second light-emitting layer.

[0144] In the organic electroluminescent device according to the present disclosure, both the first light-emitting layer and the second light-emitting layer are light-emitting layers that emit blue light.

[0145] The organic electroluminescent device according to the present disclosure may further comprise, in addition to the light-emitting layer, one or more layers selected from a hole injection layer, a hole transport layer, a hole support layer, a light-emitting support layer, an electron transport layer, an electron injection layer, an intermediate layer, a hole blocking layer, an electron blocking layer, and an electron buffer layer. The organic electroluminescent device may further comprise, in addition to the light-emitting material of the present disclosure, an amine-based compound and / or an azine-based compound.In particular, the hole injection layer, hole transport layer, hole auxiliary layer, light-emitting layer, light-emitting auxiliary layer, or electron-blocking layer may comprise an amine-based compound, for example, an arylamine-based compound, a styrylamine-based compound, or the like, as a hole injection material, hole transport material, hole auxiliary material, light-emitting material, light-emitting auxiliary material, and electron-blocking material. Furthermore, the electron transport layer, electron injection layer, electron buffer layer, and hole-blocking layer may contain an azine-based compound as an electron transport material, electron injection material, electron buffer material, and hole-blocking material. Additionally, the organic layer may further comprise at least one metal from the group consisting of Group 1 metals, Group 2 metals, transition metals of the 4th period, transition metals of the 5th period, or other metals.period, lanthanides and organic metals of the d-transition elements of the periodic table or at least one complex compound comprising such a metal.

[0146] A hole injection layer, a hole transport layer, an electron blocking layer, or a combination thereof can be used between the anode and the light-emitting layer. The hole injection layer can be multilayered to lower the hole injection barrier (or hole injection voltage) from the anode to the hole transport layer or electron blocking layer, with two compounds being used simultaneously in each of the multiple layers. The hole injection layer can also be doped with a p-type dopant. The electron blocking layer can be placed between the hole transport layer (or hole injection layer) and the light-emitting layer and restricts the excitons in the light-emitting layer by blocking the flow of electrons from the light-emitting layer to prevent light emission leakage.Multiple layers can be used in the hole transport layer or the electron blocking layer, with multiple compounds being used in each layer.

[0147] An electron buffer layer, a hole-blocking layer, an electron transport layer, an electron injection layer, or a combination thereof can be used between the light-emitting layer and the cathode. The electron buffer layer can be multilayered to control electron injection and improve the interface properties between the light-emitting layer and the electron injection layer, with two compounds being used simultaneously in each of the multiple layers. The hole-blocking layer can be placed between the electron transport layer (or electron injection layer) and the light-emitting layer and blocks the arrival of holes at the cathode, thereby improving the probability of electron-hole recombination in the light-emitting layer.The hole-blocking layer or the electron transport layer can also be multilayered, with several compounds being used in each layer. Furthermore, the electron injection layer can be doped with an n-type dopant.

[0148] The light-emitting auxiliary layer can be located between the anode and the light-emitting layer or between the cathode and the light-emitting layer. When the light-emitting auxiliary layer is located between the anode and the light-emitting layer, it can be used to promote hole injection and / or hole transport or to prevent electrode overflow. When the light-emitting auxiliary layer is located between the cathode and the light-emitting layer, it can be used to promote electron injection and / or electron transport or to prevent hole overflow.Furthermore, the hole support layer is located between the hole transport layer (or hole injection layer) and the light-emitting layer and can facilitate or block the hole transport (or injection) rate, thereby controlling the charge. If the organic electroluminescent device comprises two or more hole transport layers, the additional hole transport layer can also be used as a hole support layer or electron blocking layer. The light-emitting support layer, the hole support layer, or the electron blocking layer can improve the efficiency and / or lifetime of the organic electroluminescent device.

[0149] In the organic electroluminescent device of the present disclosure, at least one layer (hereinafter referred to as "a surface layer"), selected from a chalcogenide layer, a halogenated metal layer, and a metal oxide layer, can preferably be arranged on one or more inner surfaces of one or both electrodes of a pair of electrodes. Specifically, a chalcogenide layer (including oxides) of silicon and aluminum is preferably arranged on an anode surface of a layer of an electroluminescent medium, and a halogenated metal layer or a metal oxide layer is preferably arranged on a cathode surface of a layer of electroluminescent medium. The surface layer helps maintain the operational stability of the organic electroluminescent device. Preferably, the chalcogenide SiO₂ x (1≤X≤2), AlO X(1≤X≤1.5), SiON, SiAlON etc., includes the halogenated metal LiF, MgF2, CaF2, a rare earth metal fluoride etc. and includes the metal oxide Cs2O, Li2O, MgO, SrO, BaO, CaO etc.

[0150] Furthermore, in the organic electroluminescent device of the present disclosure, a mixed region consisting of an electron transport compound and a reductive dopant, or a mixed region consisting of a hole transport compound and an oxidative dopant, can be arranged on at least one surface of a pair of electrodes. In this case, the electron transport compound is reduced to an anion, making it easier to inject and transport electrons from the mixed region into an electroluminescent medium. Furthermore, the hole transport compound is oxidized to a cation, making it easier to inject and transport holes from the mixed region into the electroluminescent medium.Preferably, the oxidative dopant comprises various Lewis acid and acceptor compounds, and the reductive dopant comprises alkali metals, alkali metal compounds, alkaline earth metals, rare earth metals, and mixtures thereof. Furthermore, a layer of reductive dopant can be used as a charge-generating layer to fabricate an organic electroluminescent device having two or more light-emitting layers and emitting white light.

[0151] The organic electroluminescent device according to the present disclosure may further comprise one or more dopants in the light-emitting layer.

[0152] The dopant contained in the organic electroluminescent device of the present disclosure may be at least one phosphorescent or fluorescent dopant and is preferably a fluorescent dopant. The phosphorescent dopant material applied to the organic electroluminescent device of the present disclosure is not subject to any particular restrictions, but may preferably be selected from the group consisting of the metallated complex compounds of iridium (Ir), osmium (Os), copper (Cu), and platinum (Pt), more preferably from the group consisting of ortho-metallated complex compounds of iridium (Ir), osmium (Os), copper (Cu), and platinum (Pt), and even more preferably from the group consisting of ortho-metallated complex compounds of iridium (Ir), osmium (Os), copper (Cu), and platinum (Pt), and even more preferably from ortho-metallated iridium complex compounds.

[0153] The dopant contained in the organic electroluminescent device of the present disclosure may be a compound represented by the following formula D; however, it is not limited to such a compound.

[0154] It is true that in Formula D R 101 to R 111 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30)-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or -L'4-N-(Ar'4)(Ar'5) may be linked to one or more neighboring substituents to form one or more rings; Y'1 stands for B; X'1 and X'2 each stand independently for NR'; R' each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30)-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or -L'4-N-(Ar'4)(Ar'5) stands or with at least one of R 101 , R 108 , R 109 and R 111 may be linked to one or more rings; L'4 each independently for a single bond, a substituted or unsubstituted (C6-C 30 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene; Ar'4 and Ar'5 each independently for hydrogen, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring, a substituted or unsubstituted (C6-C 30)-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl.

[0155] Preferably R 101 to R 111 each independently for hydrogen, deuterium, a substituted or unsubstituted (C1-C 20 )-Alkyl, a substituted or unsubstituted (C6-C 25 )-Aryl, a substituted or unsubstituted (5- to 25-membered) heteroaryl or - L'4-N-(Ar'4)(Ar'5) are or are linked with one or more neighboring substituents to form one or more rings.

[0156] Further preferred options are available. 101 to R 111 each independently for hydrogen, deuterium, unsubstituted (C1-C 10 )-Alkyl; (C6-C 18 )-Aryl, unsubstituted or by at least one of (C1-C 10 )-Alkyl, (13- to 18-membered) heteroaryl and di-(C6-C 18)-arylamino is substituted; (5- to 18-membered) heteroaryl that is unsubstituted or substituted by at least one (C1-C 10 )-alkyl is substituted; or -L'4-N-(Ar'4)(Ar'5) are present or are linked to one or more neighboring substituents to form one or more rings. For example, R 101 to R 111each be independently selected from hydrogen, a methyl, a tert-butyl, a substituted or unsubstituted phenyl, a biphenyl, a terphenyl, a triphenylenyl, a carbazolyl, a phenoxazinyl, a phenothiazinyl, a dimethylacridinyl, a dimethylxanthenyl, a diphenylamino unsubstituted or substituted by at least one of methyl and diphenylamino, a phenylnaphthylamino, a dibiphenylamino, a phenylamino substituted by phenylcarbazolyl or dibenzofuranyl, or a (17- to 21-membered) heteroaryl substituted by at least one of methyl and phenyl, or with an adjacent substituent to form a benzene ring, an indole ring substituted by at least one of phenyl and diphenylamino, a benzofuran ring, a benzothiophene ring, or a 19-membered The heteroring is linked by at least one methyl substitution.The substituent of the substituted phenyl can be one or more of a methyl, a carbazolyl, a dibenzofuranyl, a diphenylamino, a phenoxazinyl, a phenothiazinyl and a dimethylacridinyl.

[0157] According to one embodiment of the present disclosure, the following compounds may be cited as examples, but are not limited thereto.

[0158] In the above compounds, D2 to D5 mean that 2 to 5 hydrogen atoms are replaced by deuterium respectively.

[0159] The formation of layers in organic electroluminescent devices can be achieved by any dry deposition process, such as vacuum evaporation, sputtering, plasma, or ion plating, or by wet deposition processes, such as spin coating, dip coating, or flood coating. Using a wet film formation process, a thin film can be formed by dissolving or diffusing each layer-forming material in a suitable solvent, such as ethanol, chloroform, tetrahydrofuran, dioxane, etc. The solvent can be any solvent in which the layer-forming materials can be dissolved or diffused and in which there are no issues regarding film formation.

[0160] According to one embodiment of the present disclosure, when forming a layer by the first host material and the second host material, the layer can be formed according to the methods described above and can frequently be formed by co-deposition or mixed deposition. Co-deposition is a mixed deposition process in which two or more materials are placed in separate crucible sources and a current is applied to both cells simultaneously to vaporize the materials; mixed deposition is a mixed deposition process in which two or more materials are mixed in a crucible source prior to deposition and then a current is applied to one cell to vaporize the materials.

[0161] According to one embodiment of the present disclosure, if the first host material and the second host material are present in the same layer or different layers in the organic electroluminescent device, each of the two host compounds can be deposited separately. For example, the first host compound can be deposited and then the second host compound can be deposited.

[0162] According to one embodiment of the present disclosure, the present invention can provide a display device comprising several host materials, namely a first host material represented by formula 1 and a second host material represented by formula 2, an organic electroluminescent compound represented by formula 11, or an organic electroluminescent compound represented by formula 12. It is also possible to manufacture, using the organic electroluminescent device of the present disclosure, a display device, etc., such as a display device for smartphones, tablets, laptops, PCs, televisions, or vehicles, or a lighting device, etc., such as an outdoor or indoor lighting device.

[0163] The following section details the manufacturing processes of the compounds according to the present disclosure and their properties, as well as the drive voltage, conversion efficiency, and lifetime characteristics of an organic electroluminescent device (OLED) according to the present disclosure. However, the following examples merely describe the properties of the organic electroluminescent compound according to the present disclosure and the OLED it comprises, and the present disclosure is not limited to these examples. Example 1: Production of compound C-19 1) Synthesis of compound 1-1

[0164] In a flask, compound A (50 g, 277 mmol) was dissolved in 250 ml of THF and treated with zinc (81.6 g, 1248 mmol) and ZnCl₂ (49.8 g, 360 mmol). The mixture was then reacted for 1 hour at room temperature. After completion of the reaction, the organic layer was extracted with ethyl acetate and treated with MgSO₄. After filtration and concentration of the organic layer, the resulting mixture was purified by column chromatography, yielding compound 1-1 (42 g, yield: 85%). 2) Synthesis of compound 1-2

[0165] Compound 1-1 (40 g, 110 mmol) was dissolved in 600 mL of CHCl3 in a 1-L round-bottom flask. The reactant was then cooled to 0 °C and trifluoromethanesulfonic acid (128 mL, 1446 mmol) was added. The reaction mixture was stirred at 60 °C for 18 hours. After completion of the reaction, the mixture was cooled to room temperature, extracted with dichloromethane, and treated with MgSO4. The organic layer was filtered and concentrated. The resulting mixture was purified by column chromatography, giving compound 1-2 (14.3 g, yield: 40%). 3) Synthesis of compounds 1-3

[0166] In a flask, compound 1-2 (7.72 g, 23.5 mmol) was dissolved in 240 mL of dichloromethane and mixed with bromine (1.21 mL, 23.5 mmol), after which the mixture was reacted for 12 hours. Upon completion of the reaction, the mixture was neutralized with an aqueous solution of K₂CO₃ and sodium thiosulfate, extracted with dichloromethane, and treated with MgSO₄. After filtration and concentration of the organic layer, the resulting mixture was purified by column chromatography, yielding compound 1-3 (6.9 g, yield: 73%). 4) Synthesis of compound C-19

[0167] In a flask, compounds 1-3 (6.9 g, 16.9 mmol), compound B (5.5 g, 22 mmol), Pd(PPh3)4 (580 mg, 0.507 mmol), K2CO3 (11.7 g, 84.7 mmol), 45 mL toluene, 10 mL ethanol, and 45 mL distilled water were stirred under reflux for 15 hours. The mixture was cooled to room temperature, after which the organic layer was extracted with ethyl acetate and dried over magnesium sulfate. The organic layer was then distilled under reduced pressure and separated by column chromatography, giving compound C-19 (1.3 g, yield: 14%). MG C-19 530,67 Example 2: Production of compound C-4

[0168] In a flask, compounds 1-3 (7 g, 17 mmol), 2-1 (4.4 g, 22.34 mmol), Pd(PPh3)4 (590 mg, 0.515 mmol), K2CO3 (11.8 g, 85.93 mmol), 45 mL toluene, 1 mL ethanol, and 45 mL distilled water were stirred under reflux for 8 hours. The mixture was cooled to room temperature, after which the organic layer was extracted with ethyl acetate and dried over magnesium sulfate. The organic layer was then distilled under reduced pressure and separated by column chromatography, giving compound C-4 (1.6 g, yield: 20%). MG C-4 480,19 Example 3: Production of compound H2-256 1) Synthesis of compound 5-2

[0169] Compound 5-1 (30 g, 156.07 mmol) was dissolved in 900 ml of methylene chloride (MC) and treated with N-bromosuccinimide (NBS, 30.5 g, 171.67 mmol). The mixture was stirred under reflux for 2 hours, cooled to room temperature, and stirred for 15 hours. After the addition of aqueous sodium thiosulfate solution, the mixture was stirred. The organic layer was separated and neutralized by the addition of aqueous Na₂CO₃ solution. The organic layer was separated, dried over magnesium sulfate, filtered under reduced pressure, and distilled under reduced pressure. The residue was separated by column chromatography, giving compound 5-2 (36 g, yield: 85.10%). 2) Synthesis of compound H2-256

[0170] In a flask, compound 5-2 (20 g, 73.77 mmol), (10-phenylanthracene-9-yl)boronic acid (24.19 g, 81.14 mmol), Pd(OAc)₂ (0.66 g, 2.95 mmol), SPhos (3.63 g, 8.85 mmol), 400 mL toluene, K₃PO₄ (39.1 g, 184.4 mmol), 90 mL distilled water, and 90 mL ethanol were stirred under reflux. The reactant was cooled to room temperature after 4 hours. The reaction mixture was extracted with EE and washed with distilled water. The organic layer was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound H₂-256 (26 g, yield: 79.38%). MG Fp. H2-256 444,53 270,2 °C Example 4: Production of compound H2-691-D14

[0171] Compound H2-256 was synthesized according to the deuteration process disclosed in Korean patent publications No. 10-2283849 or 10-1427457, yielding compound H2-691-D14 (16.4 g, yield: 72.34%, MS: [M+H]+ = 459.3). MG Fp. H2-691-D14 458,3 268,9 °C Example 5: Production of compound H2-259

[0172] In a flask, compound 7-1 (16 g, 59.01 mmol), compound 7-2 (24.29 g, 64.91 mmol), Pd(OAc)₂ (0.53 g, 2.36 mmol), SPhos (2.42 g, 5.90 mmol), 400 mL toluene, K₃PO₄ (25.05 g, 118.03 mmol), 80 mL distilled water, and 40 mL ethanol were stirred under reflux. After 2 hours, the mixture was cooled to room temperature. The organic layer was extracted with EE and washed with distilled water. The organic layer was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound H₂-259 (14.4 g, yield: 46.87%). MG Fp. H2-259 520,63 250,4 °C Example 6: Production of compound H2-694-D9

[0173] Compound H2-259 was synthesized according to the deuteration process disclosed in Korean patent publications No. 10-2283849 or 10-1427457, yielding compound H2-694-D9 (7.4 g, yield: 60.70%, MS: [M+H]+ = 530.1). MG Fp. H2-694-D9 529,1 240,1 °C Example 7: Production of compound C3-1 1) Synthesis of compound C3-1 P-2

[0174] In a flask, 1-bromo-7-chlorophenanthrine (30 g, 124.2 mmol), 4,4,4',4',5,5,5',5'-octamethyl-2,2'-bi(1,3,2-dioxaborolane) (47.3 g, 186.3 mmol), PdCl₂(PPh₃)₂ (1.57 g, 6.21 mmol), KOAc (30.47 g, 310.54 mmol), and 600 mL of 1,4-dioxane were mixed and stirred under reflux. After 2 hours, the mixture was cooled to room temperature. After distilling off the 1,4-dioxane under reduced pressure, the residue was separated by column chromatography, giving compound C₃-1P₂ (32.0 g, yield: 89.28%). 2) Synthesis of compound C3-1P-1

[0175] In a flask, 7-bromotetraphene (30.0 g, 97.66 mmol), compound C3-1P-2 (31 g, 107.42 mmol), Pd(PPh3)4 (5.64 g, 4.88 mmol), TBAB (3.14 g, 9.76 mmol), K2CO3 (33.74 g, 244.14 mmol), 800 mL toluene, and 200 mL distilled water were mixed and stirred under reflux. After 4 hours and 30 minutes, the mixture was cooled to room temperature. The organic layer was extracted with EE and washed with distilled water. The organic layer was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound C3-1P-1 (33.0 g, yield: 86.89%). 3) Synthesis of compound C3-1

[0176] Compound C3-1P-1 (15.0 g, 38.57 mmol), phenylboronic acid (7.05 g, 57.85 mmol), Pd(OAc)₂ (0.43 g, 1.20 mmol), XPhos (2.2 g, 4.62 mmol), K₂CO₃ (15.99 g, 115.71 mmol), 400 mL toluene, 80 mL distilled water, and 60 mL ethanol were mixed and stirred under reflux. After 2 hours, the mixture was cooled to room temperature. The organic layer was extracted with EE and washed with distilled water. The organic layer was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound C3-1 (13.5 g, yield: 81.29%). MG Fp. Connection C3-1 430,55 210,8 °C Example 8: Production of compound C3-5

[0177] In a flask, compound C3-1P-1 (14.0 g, 35.99 mmol), 2-naphthylboronic acid (9.28 g, 53.99 mmol), Pd(OAc)₂ (0.40 g, 1.79 mmol), XPhos (2.06 g, 4.32 mmol), K₂CO₃ (14.92 g, 107.9 mmol), 400 mL toluene, 80 mL distilled water, and 60 mL ethanol were mixed and stirred under reflux. After 2 hours, the mixture was cooled to room temperature. The organic layer was extracted with EE and washed with distilled water. The organic layer was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound C3-5 (12.2 g, yield: 70.52%). MG Fp. Connection C3-5 480,61 187,2 °C Example 9: Production of compound C-366 1) Synthesis of compound C-366P-1

[0178] In a flask, 3-chlorophenanthrine (30.0 g, 141.1 mmol), 4,4,4',4',5,5,5',5'-octamethyl-2,2'-bis(1,3,2-dioxaborolane) (53.7 g, 211.6 mmol), Pd₂(dba)₃ (6.5 g, 7.05 mmol), SPhos (5.8 g, 14.1 mmol), KOAc (27.7 g, 282.1 mmol), and 750 mL of 1,4-dioxane were mixed and stirred under reflux. After 2 hours, the mixture was cooled to room temperature. After distilling off the 1,4-dioxane under reduced pressure, the residue was separated by column chromatography, giving compound C-366P-1 (34.9 g, yield: 81.31%). 2) Synthesis of compound C-366

[0179] In a flask, compound C-366P-1 (20.1 g, 66.1 mmol), 2-chlorodibenzo[g,p]chrysine (20.0 g, 55.1 mmol), Pd(OAc)₂ (0.62 g, 2.76 mmol), XPhos (2.6 g, 5.5 mmol), K₂CO₃ (19.0 g, 137.8 mmol), 400 mL toluene, 80 mL distilled water, and 80 mL ethanol were stirred under reflux. After 4 hours, the mixture was cooled to room temperature. After adding distilled water to the mixture, the organic layer was extracted with dichloromethane. The organic layer was further extracted by adding dichloromethane again to the remaining aqueous layer, after which the extracted organic layers were combined and dried over magnesium sulfate. The dried mixture was filtered under reduced pressure and then distilled under reduced pressure and separated by column chromatography, giving compound C-366 (25.1 g, yield: 90.27%). MG Fp. Connection C-366 504,63 263,0 °C Example 10: Production of compound C-541

[0180] In a flask, 7-bromotetraphene (12 g, 39.06 mmol), 4,4,5,5-tetramethyl-2-(phenanthro[4,5-bcd]furan-8-yl)-1,3,2-dioxaborolane (14.91 g, 46.87 mmol), Pd(OAc)₂ (0.33 g, 1.56 mmol), SPhos (1.92 g, 4.68 mmol), K₃PO₄ (20.73 g, 97.66 mmol), 300 mL toluene, 80 mL distilled water, and 80 mL ethanol were mixed and stirred under reflux. After 3 hours and 30 minutes, the mixture was cooled to room temperature. The organic layer was extracted with EE and washed with distilled water. The organic layer was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound C-541 (13.5 g, yield: 82.61%). MG Fp. Connection C-541 418,50 221,0 °C Example 11: Production of compound C-502

[0181] In a flask, 7-bromotetraphene (5.0 g, 16.27 mmol), 4,4,5,5-tetramethyl-2-(phenanthren-1-yl)-1,3,2-dioxaborolane (6.0 g, 19.72 mmol), Pd(OAc)₂ (0.14 g, 0.65 mmol), SPhos (0.8 g, 1.94 mmol), K₃PO₄ (8.64 g, 40.70 mmol), 125 mL toluene, 35 mL distilled water, and 35 mL ethanol were mixed and stirred under reflux. After 1 hour and 10 minutes, the mixture was cooled to room temperature. The organic layer was extracted with EE and washed with distilled water. The organic layer was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound C-502 (1.8 g, yield: 27.35%). MG Fp. Connection C-502 404,51 200 °C Example 12: Production of compound C-503

[0182] In a flask, 7-bromotetraphene (5.0 g, 16.27 mmol), 4,4,5,5-tetramethyl-2-(phenanthren-2-yl)-1,3,2-dioxaborolane (6.0 g, 19.72 mmol), Pd(OAc)₂ (0.14 g, 0.65 mmol), SPhos (0.8 g, 1.94 mmol), K₃PO₄ (8.64 g, 40.70 mmol), 125 mL toluene, 35 mL distilled water, and 35 mL ethanol were mixed and stirred under reflux. After 1 hour and 40 minutes, the mixture was cooled to room temperature. After adding distilled water, the organic layer was extracted with EE. The organic layer was treated with magnesium sulfate, dried, and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound C-503 (4.0 g, yield: 60.77 %). MG Fp. Connection C-503 404,51 233,9 °C Example 13: Production of compound C-571 1) Synthesis of compound C-571 P-2

[0183] In a flask, 7-bromotetraphene (12.0 g, 39.06 mmol), 4-chlorophenylboronic acid (7.33 g, 46.87 mmol), PdCl₂(AMPHOS)₂ (1.10 g, 1.56 mmol), TBAB (1.26 g, 3.90 mmol), Na₂CO₃ (12.42 g, 117.19 mmol), 300 mL of toluene, and 80 mL of distilled water were mixed and stirred under reflux. After 1 hour, the mixture was cooled to room temperature. The organic layer was extracted with EE and washed with distilled water. The organic layer was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound C-571P-2 (12.0 g, yield: 90.87%). 2) Synthesis of compound C-571 P-1

[0184] In a flask, compound C-571 P-2 (12 g, 35.49 mmol), 4,4,4',4',5,5,5',5'-octamethyl-2,2'-bi(1,3,2-dioxaborolane) (13.51 g, 53.24 mmol), Pd2(dba)3 (1.62 g, 1.77 mmol), SPhos (1.45 g, 3.55 mmol), KOAc (10.44 g, 106.48 mmol), and 400 mL of 1,4-dioxane were mixed and stirred under reflux. After 6 hours, the mixture was cooled to room temperature. The organic layer was extracted with EE and washed with distilled water. It was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound C-571 P-1 (13.0 g, yield: 85.11 %). 3) Synthesis of compound C-571

[0185] In a flask, compound C-571 P-1 (13.0 g, 30.20 mmol), 8-bromophenanthro[4,5-bcd]furan (9.0 g, 33.22 mmol), Pd(OAc)₂ (0.27 g, 1.20 mmol), SPhos (1.48 g, 3.62 mmol), K₃PO₄ (16.03 g, 75.52 mmol), 300 mL toluene, 70 mL distilled water, and 50 mL ethanol were mixed and stirred under reflux. After 4 hours and 10 minutes, the mixture was cooled to room temperature. The organic layer was extracted with EE and washed with distilled water. The organic layer was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound C-571 (8.8 g, yield: 58.91 %). MG Fp. Connection C-571 494,59 217 °C Example 14: Production of compound C-576 1) Synthesis of compound C-576 P-2

[0186] In a flask, 7-bromotetraphene (12.0 g, 39.06 mmol), (4-chloro-2-fluorophenyl)boronic acid (8.1 g, 46.87 mmol), PdCl₂(AMPHOS)₂ (1.10 g, 1.56 mmol), TBAB (1.26 g, 3.90 mmol), Na₂CO₃ (12.42 g, 117.19 mmol), 300 mL of toluene, and 80 mL of distilled water were mixed and stirred under reflux. After 1 hour, the mixture was cooled to room temperature. The organic layer was extracted with EE and washed with distilled water. The organic layer was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound C-576P-2 (13.0 g, yield: 93.27%). 2) Synthesis of compound C-576 P-1

[0187] In a flask, compound C-576 P-2 (13 g, 36.43 mmol), 4,4,4',4',5,5,5',5'-octamethyl-2,2'-bis(1,3,2-dioxaborolane) (13.87 g, 54.65 mmol), Pd2(dba)3 (1.66 g, 1.82 mmol), SPhos (1.49 g, 3.64 mmol), KOAc (10.72 g, 109.29 mmol), and 400 mL of 1,4-dioxane were mixed and stirred under reflux. After 6 hours, the mixture was cooled to room temperature. The organic layer was extracted with EE and washed with distilled water. The organic layer was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound C-576 P-1 (8.0 g, yield: 48.97 %). 3) Synthesis of compound C-576

[0188] In a flask, compound C-576 P-1 (8.0 g, 17.84 mmol), 8-bromophenanthro[4,5-bcd]furan (5.8 g, 21.41 mmol), Pd(OAc)₂ (0.16 g, 7.13 mmol), SPhos (0.88 g, 2.14 mmol), K₃PO₄ (9.47 g, 44.61 mmol), 200 mL toluene, 40 mL distilled water, and 20 mL ethanol were mixed and stirred under reflux. After 3 hours and 10 minutes, the mixture was cooled to room temperature. The organic layer was extracted with EE and washed with distilled water. The organic layer was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound C-576 (7.3 g, yield: 79.83%). MG Fp. Connection C-571 512,58 262 °C Example 15: Production of compound C-501

[0189] In a flask, 7-bromotetraphene (22.83 g, 74.30 mmol), phenanthrene-9-ylboronic acid (15.0 g, 67.55 mmol), Pd(OAc)₂ (0.76 g, 3.37 mmol), SPhos (3.05 g, 7.43 mmol), K₃PO₄ (35.85 g, 168.88 mmol), 300 mL toluene, 150 mL distilled water, and 150 mL ethanol were mixed and stirred under reflux. After 1 hour and 10 minutes, the mixture was cooled to room temperature. The organic layer was extracted with EE and washed with distilled water. The organic layer was then dried over magnesium sulfate and filtered under reduced pressure. The organic layer was distilled under reduced pressure and separated by column chromatography, giving compound C-501 (20.0 g, yield: 66.54 %). MG Fp. Connection C-501 404,51 256 °C Example 16: Production of compound C-531

[0190] Compound C-501 was synthesized by a deuteration method selected from those described in Korean patent publications No. 10-2283849, 10-1427457, etc., yielding compound C-531 (12.2 g, yield: 63.8%, MS: [M+H]+ = 421.2). Example 17: Production of compound C-532

[0191] Compound C-502 was synthesized by a deuteration method selected from those described in Korean patent publications No. 10-2283849, 10-1427457, etc., yielding compound C-532 (11.0 g, yield: 46.2%, MS: [M+H]+ = 423.3).

[0192] For a detailed understanding of the present disclosure, a method for producing an organic electroluminescent device comprising an organic electroluminescent compound according to the present disclosure and its properties are described below. Apparatus examples 1 to 3: Production of OLEDs comprising the compound according to the present disclosure as a host

[0193] An OLED was fabricated according to the present disclosure. First, a transparent electrode thin film of indium tin oxide (ITO) (10 Ω / sq) on a glass substrate for an OLED (GEOMATEC CO., LTD., Japan) was successively subjected to ultrasonic washing with acetone and isopropyl alcohol, then stored in isopropyl alcohol, and subsequently used. The ITO substrate was then mounted on a substrate holder of a vacuum vapor deposition (VAC) apparatus. Compound HI was then introduced into one cell of the VAC apparatus, and compound HT-1 was introduced into another cell. The two materials were vaporized at different rates, and compound HI was deposited at a doping rate of 5 wt%, based on the total amount of compounds HI and HT-1, forming a hole injection layer with a thickness of 10 nm.Compound HT-1 was then deposited onto the hole injection layer, forming a first hole transport layer with a thickness of 80 nm. Subsequently, compound HT-2 was introduced into another cell of the vacuum vapor deposition apparatus and evaporated by applying an electric current to the cell, forming a second hole transport layer with a thickness of 15 nm on top of the first hole transport layer. After the formation of the hole injection layer and the hole transport layers, a light-emitting layer was deposited as follows: The host of the first light-emitting layer, shown in Table 1, was introduced as the host into one cell of the vacuum vapor deposition apparatus, and compound BD was introduced as the dopant into another cell. The two materials were evaporated at different rates, and the dopant was added at a doping rate of 2 wt.-%, based on the total amount of host and dopant, was deposited, forming a first light-emitting layer 5 nm thick on the second hole transport layer. Next, the host of the second light-emitting layer shown in Table 1 was placed as the host in one cell of the vacuum vapor deposition apparatus, and compound BD was placed as the dopant in another cell. The two materials were evaporated at different rates, and the dopant was deposited at a doping rate of 2 wt%, based on the total amount of host and dopant, forming a second light-emitting layer 13 nm thick on the first light-emitting layer. Compound ET-1 was deposited as an electron buffer layer to a thickness of 5 nm.Subsequently, compounds EI-1 and EI-2 were placed in two other cells and then evaporated at a rate of 2:1, forming an electron transport layer 25 nm thick on the light-emitting layer. Compounds Yb:LiF were placed in two other cells and evaporated at a rate of 2:1, depositing an electron injection layer 1 nm thick. Then, using a different vacuum vapor deposition apparatus, an 80 nm thick aluminum cathode was deposited on the electron injection layer, fabricating an OLED. All materials used for the fabrication of the OLED were sublimated by vacuum sublimation at 10°C. -6 Torr cleaned. Comparative example 1: Production of an OLED that includes the conventional compound as a host

[0194] An OLED was fabricated in the same manner as in Device Example 1, except that a single 18 nm thick light-emitting layer was deposited on the second hole transfer layer by using only the host from Table 1 below as the host of the light-emitting layer.

[0195] The driver voltage and conversion efficiency at a luminance of 1000 nits and the minimum time to reduce the luminance from 100% to 95% (lifetime: T) 95 The CIE color coordinates of the organic electroluminescent devices according to Device Examples 1 to 3 and Comparative Example 1, which were manufactured as described above, are shown in Table 1 below. Here, the conversion efficiency [Eff / Y] is the current efficiency [cd / A] divided by the CIE Y-coordinate value. Table 1 Host of the first light-emitting layer Host of the second light-emitting layer Driver voltage [V] Conversion efficiency [Eff / Y] Lifetime T 95 [h] Device example 1 3,5 95 250 Device example 2 3,5 89 250 Device example 3 3,5 94 410 Comparative example 1 3,5 81 250

[0196] It can be seen from Table 1 above that the organic electroluminescent device comprising a specific combination of compounds according to the present disclosure as host materials exhibits a significantly improved conversion efficiency compared to an organic electroluminescent device comprising the conventional compound as host material. Furthermore, it may be more stable with respect to thermal degradation.

[0197] The connections used in device examples 1 to 3 and comparative example 1 are shown in Table 2 below. Table 2 Hole injection layer / hole transport layer Light-emitting layer Electron buffer layer Electron transport layer / electron injection layer Device example 4: Production of an OLED comprising the compound according to the present disclosure as a host

[0198] An OLED was fabricated according to the present disclosure. First, a transparent electrode thin film of indium tin oxide (ITO) (10 Ω / sq) on a glass substrate for an OLED (GEOMATEC CO., LTD., Japan) was successively subjected to ultrasonic washing with acetone and isopropyl alcohol, then stored in isopropyl alcohol, and subsequently used. The ITO substrate was then mounted on a substrate holder of a vacuum vapor deposition (VAC) apparatus. Compound HI was then introduced into one cell of the VAC apparatus, and compound HT-1 was introduced into another cell. The two materials were vaporized at different rates, and compound HI was deposited at a doping rate of 3 wt%, based on the total amount of compounds HI and HT-1, forming a hole injection layer with a thickness of 10 nm.Compound HT-1 was then deposited onto the hole injection layer, forming a first hole transport layer 80 nm thick. Subsequently, compound HT-2 was introduced into another cell of the vacuum vapor deposition apparatus and evaporated by applying an electric current to the cell, forming a second hole transport layer 15 nm thick on top of the first hole transport layer. After the formation of the hole injection layer and the hole transport layers, a first light-emitting layer was deposited as follows: The compound shown in Table 3 was introduced as a host into one cell of the vacuum vapor deposition apparatus, and compound BD was introduced as a dopant into another cell. The two materials were evaporated at different rates, and the dopant was added at a doping rate of 2 wt.-%, based on the total amount of host and dopant, was deposited, forming a first light-emitting layer with a thickness of 5 nm on the second hole transport layer. Then, a second light-emitting layer was deposited on the first light-emitting layer as follows: Compounds H4-11:H2-231 (1:1) were introduced into two cells of the vacuum vapor deposition apparatus as the host, and compound BD was introduced into another cell as the dopant. The host was then deposited in a weight ratio of 1:1, and the dopant was deposited at a doping rate of 2 wt%, based on the total amount of host and dopant, forming a second light-emitting layer with a thickness of 13 nm on the first light-emitting layer. After the deposition of the light-emitting layers, compound ET-1 was deposited as a hole-blocking layer material at a thickness of 5 nm.Next, compounds EI-1 and EI-2 were loaded into two cells of the vacuum vapor deposition apparatus and then vaporized in a 2:1 weight ratio as electron transport layer materials, forming a 25 nm thick electron transport layer on the hole-blocking layer. Yb:LiF compounds were then vaporized onto the electron transport layer in a 2:1 weight ratio, depositing a 1 nm thick electron injection layer. Using a different vacuum vapor deposition apparatus, an 80 nm thick aluminum cathode was then deposited onto the electron injection layer, fabricating an OLED. All materials used for the fabrication of the OLED were desaturated by vacuum sublimation at 10°C. -6 Torr cleaned. Comparative example 2: Production of an OLED that includes the conventional compound as a host

[0199] An OLED was fabricated in the same manner as in apparatus example 4, except that the compound in Table 3 below was used as the host of the first light-emitting layer.

[0200] The driver voltage and current efficiency at a luminance of 1000 nits and the time until the luminance decreases from 100% to 95% (lifetime: T) 95 ) during testing of the lifetime at double acceleration of the organic electroluminescent devices according to Device Example 4 and Comparative Example 2, which were manufactured as described above, were each measured, and the results are shown in Table 3 below. Table 3 light-emitting layer Driver voltage [V] Luminous efficacy [cd / A] Life[%] Device example 4 C-501 3,4 5,5 54,8 Comparative example 2 BH-R1 3,7 5,2 13,4

[0201] Table 3 above shows that the organic electroluminescent device comprising the compound according to the present disclosure as a host exhibits significantly improved lifetime properties compared to an organic electroluminescent device comprising the conventional compound as a host. Furthermore, it may be more stable with respect to thermal degradation.

[0202] The connections used in Device Example 4 and Comparative Example 2 are shown in Table 4 below. Table 4 Hole injection layer / hole transport layer light-emitting layer Electron transport layer / hole blocking layer / electron injection layer Apparatus examples 5 to 22: Production of OLEDs comprising the compound according to the present disclosure as a host

[0203] An OLED was fabricated according to the present disclosure. First, a transparent electrode thin film of indium tin oxide (ITO) (10 Ω / sq) on a glass substrate for an OLED (GEOMATEC CO., LTD., Japan) was successively subjected to ultrasonic washing with acetone and isopropyl alcohol, then stored in isopropyl alcohol, and subsequently used. The ITO substrate was then mounted on a substrate holder of a vacuum vapor deposition (VAC) apparatus. Compound HI was then introduced into one cell of the VAC apparatus, and compound HT-1 was introduced into another cell. The two materials were vaporized at different rates, and compound HI was deposited at a doping rate of 5 wt%, based on the total amount of compounds HI and HT-1, forming a hole injection layer with a thickness of 10 nm.Compound HT-1 was then deposited onto the hole injection layer, forming a first hole transport layer with a thickness of 80 nm. Subsequently, compound HT-2 was introduced into another cell of the vacuum vapor deposition apparatus and evaporated by applying an electric current to the cell, forming a second hole transport layer with a thickness of 15 nm on top of the first hole transport layer. After the formation of the hole injection layer and the hole transport layers, a light-emitting layer was deposited as follows: The host of the first light-emitting layer, shown in Table 5, was introduced as the host into one cell of the vacuum vapor deposition apparatus, and compound BD was introduced as the dopant into another cell. The two materials were evaporated at different rates, and the dopant was added at a doping rate of 2 wt.-%, based on the total amount of host and dopant, was deposited, forming a first light-emitting layer 5 nm thick on the second hole transport layer. Next, the second light-emitting host layer shown in Table 5 was introduced as the host into one cell of the vacuum vapor deposition apparatus, and compound BD was introduced as the dopant into another cell. The two materials were evaporated at different rates, and the dopant was deposited at a doping rate of 2 wt%, based on the total amount of host and dopant, forming a second light-emitting layer 13 nm thick on the first light-emitting layer. Compound ET-1 was deposited as an electron buffer layer 5 nm thick.Then, compounds EI-1 and EI-2 were evaporated at a rate of 2:1 as electron transport layer material, forming an electron transport layer 25 nm thick on the second light-emitting layer. Compounds Yb:LiF were introduced into two other cells and evaporated at a rate of 2:1, depositing an electron injection layer 1 nm thick. Then, using a different vacuum vapor deposition apparatus, an aluminum cathode 80 nm thick was deposited on the electron injection layer, fabricating an OLED. All materials used for the fabrication of the OLED were desaturated by vacuum sublimation at 10°C. -6 Torr cleaned. Comparative example 3: Production of an OLED that includes the conventional compound as a host

[0204] An OLED was fabricated in the same way as in apparatus example 6, except that a single 18 nm thick light-emitting layer was deposited on the second hole transport layer by using only the host from Table 5 below as the host of the light-emitting layer.

[0205] The driver voltage and conversion efficiency at a luminance of 1000 nits and the minimum time to reduce the luminance from 100% to 95% (lifetime: T) 95 The CIE color coordinates of the organic electroluminescent devices, according to the device examples and the comparison examples prepared as described above, are shown in Table 5 below. Here, the conversion efficiency [Eff / Y] is the current efficiency [cd / A] divided by the CIE Y-coordinate value. Table 5 Host of the first light-emitting layer Host of the second light-emitting layer Driver voltage [V] Conversion efficiency [Eff / Y] Lifetime T 95 [h] Device example 5 H4-66-D24: H2-666-D13 3,5 6,3 148 Device example 6 H4-66-D24: H2-666-D13 3,5 6,0 143 Device example 7 H4-66-D24:H2-666-D13 3,5 6,3 106 Device example 8 H4-66-D24:H2-666-D13 3,5 5,8 63 Device example 9 H4-66-D24:H2-666-D13 3,5 6,3 106 Device example 10 H4-66-D24:H2-666-D13 3,5 6,1 106 Device example 11 H4-66-D24:H2-666-D13 3,9 6,3 103 Device example 12 H4-66-D24:H2-666-D13 3,5 6,1 106 Device example 13 H4-66-D24:H2-666-D13 3,5 6,2 175 Device example 14 H4-66-D24:H2-666-D13 3,5 5,8 86 Device example 15 H4-66-D24:H2-666-D13 3,5 6,2 190 Device example 16 H4-66-D24: H2-666-D13 3,5 6,0 3,7 Device example 17 H4-66-D24: H2-666-D13 3,5 6,1 94 Device example 18 H4-66-D24: H2-666-D13 3,5 6,1 171 Device example 19 H4-66-D24: H2-666-D13 3,5 6,3 230 Device example 20 H4-66-D24: H2-666-D13 3,5 6,0 294 Device example 21 H4-66-D24: H2-666-D13 3,5 6,3 173 Comparative example 3 3,5 5,7 75

[0206] It can be seen from Table 5 above that the organic electroluminescent device comprising a specific combination of compounds according to the present disclosure as host materials exhibits a significantly improved conversion efficiency and lifetime compared to the organic electroluminescent device comprising the conventional compound as host material, while maintaining the drive voltage. Furthermore, it may be more stable with respect to thermal degradation.

[0207] The connections used in the device examples and the comparison examples are shown in Table 6 below. Table 6 Hole injection layer / hole transport layer light-emitting layer Electron buffer layer Electron transport layer / electron injection layer QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] KR 10-2283849

[0191] KR 10-1427457

[0191] Cited non-patent literature

[0000] Tang et al. of Eastman Kodak in 1987

[0002]

Claims

[1] Organic electroluminescent device comprising an anode a cathode a first light-emitting layer, which is arranged between the anode and the cathode, and a second light-emitting layer, which is arranged between the first light-emitting layer and the cathode, wherein the first light-emitting layer contains a first compound, represented by the following formula 1 or the following formula 3, as a first host material, and the second light-emitting layer contains a second compound, represented by the following formula 2, as a second host material, and wherein the first light-emitting layer and the second light-emitting layer are in direct contact with each other: where in Formula 1 R1 to R 16each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30)-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; with the proviso that at least one of R1 to R 16 for -(L) a -(Ar) b stands; L each independently for a single bond, a substituted or unsubstituted (C6-C 30 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene; Ar each independently for a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl; and a represents an integer from 1 to 4, b represents an integer from 1 to 4, and L and Ar can each be the same or different from each other; where in Formula 3 R 50 to R 61each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30)-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; with the proviso that at least one of R 50 to R 61 for -L 30 -Ar 30 stands; L 30 for a single bond, a substituted or unsubstituted (C6-C 12 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene; Ar 30 represented by the following formula B-1 or formula B-2, where in formulas B-1 and B-2 any one of R 62 to R 71 with L 30 is linked R 62 to R 71 each independently with L 30 are linked or for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30)-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30)-ring and an aromatic (C6-C 30 )-ring stand; R 67 and R 68 together to -O-, -S-, -NR 80 - or -CR 81 R 82 - can be linked; R 80 , R 81 and R 82 each independently for a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl or a substituted or unsubstituted (C3-C 30 )-Cycloalkyl stand; R 81 and R 82 can be linked together to form one or more rings; Ar1 and Ar2 each independently represent hydrogen, deuterium, or a substituted or unsubstituted (C6-C3)aryl, with the proviso that Ar1 and Ar2 are not both hydrogen; and R 100 to R 104each stand independently for hydrogen or deuterium; where in Formula 2 Ar A for a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl or the following formula A-1; where in Formula A-1 T1 for O, S, CR a R b or NR c stands; Ring A and ring B each independently for a substituted or unsubstituted (C6-C 30 )-arene ring or a substituted or unsubstituted (3- to 30-membered) heteroarene ring; Ar 11 for a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl is present; R 17 to R 24 Each independently hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30)-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30)-ring and an aromatic (C6-C 30 )-ring or -L 13 -N(Ar 13 )(Ar 14 ) stand; R 25 and R 26 Each independently a position that starts with L 12 linked, are or for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30)-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring or - L 13 -N(Ar 13 )(Ar 14 ) stand; R a and R b each independently for a substituted or unsubstituted (C1-C 30 )-Alkyl or a substituted or unsubstituted (C6-C 30 )-Aryl can stand alone or be linked together to form one or more rings; R c for a substituted or unsubstituted (C1-C 30 )-Alkyl or a substituted or unsubstituted (C6-C 30 )-Aryl stands; L 11to L 13 each independently for a single bond, a substituted or unsubstituted (C6-C 30 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene; and Ar 13 and Ar 14 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30)-Alkoxy, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl or a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl stand. [2] Organic electroluminescent device according to claim 1, wherein two R1 to R 16 in Formula 1 -(L) a -(Ar) b are. [3] Organic electroluminescent device according to claim 1, wherein formula 1 is represented by one of the following formulas 1-1 to 1-4: where in formulas 1-1 to 1-4 where R1 to R 16 , L, Ar, a and b as defined in claim 1. [4] Organic electroluminescent device according to claim 1, wherein Ar 11 and Ar A each independently selected from the group consisting of a phenyl that is unsubstituted or substituted by deuterium, a biphenyl that is unsubstituted or substituted by deuterium, a terphenyl that is unsubstituted or substituted by deuterium, a naphthyl that is unsubstituted or substituted by deuterium, a phenanthrenyl that is unsubstituted or substituted by deuterium, or a combination thereof. [5] Organic electroluminescent device according to claim 1, wherein Ar 11selected from the group consisting of a phenyl that is unsubstituted or substituted by deuterium, a biphenyl that is unsubstituted or substituted by deuterium, a terphenyl that is unsubstituted or substituted by deuterium, a naphthyl that is unsubstituted or substituted by deuterium, a phenanthrenyl that is unsubstituted or substituted by deuterium, or a combination thereof; and Ar A a dibenzofuranyl that is unsubstituted or substituted by deuterium, or a dibenzothiophenyl that is unsubstituted or substituted by deuterium. [6] Organic electroluminescent device according to claim 1, wherein formula Ar A represented by the following formula b-1: where in formula b-1 R 27 to R 32 Each independently a position that starts with L 12linked, are or for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 3o )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30)-arylsilyl, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring or - L 13 -N(Ar 13 )(Ar 14 ) may be present or linked to a neighboring substituent to form one or more rings; and T1, R 25 , R 26 , L 13 , Ar 13 and Ar 14 as defined in claim 1. [7] Organic electroluminescent device according to claim 1, wherein formula 2 is represented by one of the following formulas 2-1 and 2-2: where in formulas 2-1 and 2-2 R 27 to R 32 Each independently hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30)-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring or -L 13 -N(Ar 13 )(Ar 14) may be present or linked to a neighboring substituent to form one or more rings, R 33 to R 35 Each independently a position that starts with L 12 linked, are or for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30)-arylsilyl, a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring or -L 13 -N(Ar 13 )(Ar 14 ) may be present or linked to a neighboring substituent to form one or more rings; and T1, R 17 to R 26 , L 11 to L 13 , Ar 11 , Ar 13 and Ar 14 as defined in claim 1. [8] Organic electroluminescent device according to claim 1, wherein formula 3 is represented by the following formula 3-1: where R 51 to R 61 , L 30 and Ar 30 as defined in claim 1. [9] Organic electroluminescent device according to claim 1, wherein at least one of formulas 1 and 2 is a compound comprising deuterium. [10] Organic electroluminescent device according to claim 1, wherein the substituted alkyl, the substituted alkenyl, the substituted aryl, the substituted arylene, the substituted heteroaryl, the substituted heteroarylene, the substituted cycloalkyl, the substituted heterocycloalkyl, the substituted alkoxy, the substituted trialkylsilyl, the substituted dialkylarylsilyl, the substituted alkyldiarylsilyl, the substituted triarylsilyl, the substituted fused ring of an aliphatic ring and an aromatic ring, the substituted arene ring and the substituted heteroarene ring are each independently modified by at least one substituent from the group consisting of deuterium; halogen; cyano; carboxyl; nitro; hydroxyl; phosphine oxide; (C1-C 30 )-Alkyl, unsubstituted or substituted by deuterium; halogen-(C1-C 30 )-alkyl; (C2-C 30 )-Alkenyl; (C2-C 30 )-Alkynyl; (C1-C 30 )-Alkoxy; (C1-C 30)-Alkylthio; (C3-C 30 )-Cycloalkyl; (C3-C 30 )-cycloalkenyl; (3- to 7-membered) heterocycloalkyl; (C6-C 30 )-Aryloxy; (C6-C 30 )-Arylthio; (3- to 30-membered) heteroaryl, unsubstituted or modified by at least one of deuterium and (C6-C 30 )-aryl is substituted; (C6-C 30 )-Aryl, unsubstituted or by at least one of deuterium, (C1-C 30 )-Alkyl, (C6-C 30 )-aryl and (3- to 30-membered) heteroaryl is substituted; Tri-(C1-C 30 )-Alkylsilyl; Tri-(C6-C 30 )-arylsilyl; Di-(C1-C 30 )-alkyl-(C6-C 30 )-arylSilyl; (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl; amino; Mono- or Di-(C1-C 30 )-alkylamino; Mono- or Di-(C2-C 30 )-alkenylamino; Mono- or Di-(C6-C 30 )-arylamino; Mono- or di-(3- to 30-membered)-heteroarylamino; (C1-C 30 )-Alkyl-(C2-C 30 )-alkenylamino; (C1-C 30 )-Alkyl-(C6-C30 )-arylamino; (C1-C 30 )-Alkyl-(3- to 30-membered)-heteroarylamino; (C2-C 30 )-Alkenyl-(C6-C 30 )-arylamino; (C2-C 30 )-Alkenyl-(3- to 30-membered)-heteroarylamino; (C6-C 30 )-Aryl-3- to 30-membered)-heteroarylamino; (C1-C 30 )-Alkylcarbonyl; (C1-C 30 )-Alkoxycarbonyl; (C6-C 30 )-Arylcarbonyl; Di-(C6-C 30 )-aryl boronyl; (C6-C 30 )-Arylphosphine; Di-(C1-C 30 )-alkylboronyl; (C1-C 30 )-Alkyl-(C6-C 30 )-arylboronyl; (C6-C 30 )-Aryl-(C1-C 30 )-alkyl and (C1-C 30 )-Alkyl-(C6-C 30 )-aryl are substituted. [11] Organic electroluminescent device according to claim 1, wherein the compound represented by formula 1 is at least one of the following compounds selected: wherein D nThis means that n hydrogen atoms are replaced by deuterium, and n is an integer from 1 to the maximum number of hydrogen atoms in the compound. [12] Organic electroluminescent device according to claim 1, wherein the compound represented by formula 2 is at least one of the following compounds selected: wherein D n This means that n hydrogen atoms are replaced by deuterium, and n is an integer from 1 to the maximum number of hydrogen atoms in the compound. [13] Organic electroluminescent device according to claim 1, wherein the compound represented by formula 3 is at least one compound selected from the following: wherein D n This means that n hydrogen atoms are replaced by deuterium, and n is an integer from 1 to the maximum number of hydrogen atoms in the compound. [14] Organic electroluminescent device according to claim 1, wherein the first light-emitting layer further comprises an additional host material, the second light-emitting layer further comprises an additional host material, or both layers further comprise an additional host material. [15] Organic electroluminescent device according to claim 1, wherein the light-emitting dopant of the first light-emitting layer is identical to or different from the light-emitting dopant of the second light-emitting layer. [16] Organic electroluminescent device according to claim 1, wherein both the first light-emitting layer and the second light-emitting layer are light-emitting layers that emit blue light. [17] Organic electroluminescent compound represented by the following formula 11, comprising at least one deuterium: where in Formula 11 R1 to R 16 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30)-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; with the proviso that at least one of R1 to R 16 for -(L) a -(Ar) b stands; L each independently for a single bond, a substituted or unsubstituted (C6-C 30 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene; Ar each independently for a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl; and where a represents an integer from 1 to 4, b represents an integer from 1 to 4, and L and Ar can each be the same or different from each other. [18] Organic electroluminescent compound according to claim 17, wherein the residual percentage of hydrogen is 10% to 20%. [19] Organic electroluminescent compound according to claim 17, wherein the residual percentage of hydrogen is 20% to 30%. [20] Organic electroluminescent compound according to claim 17, wherein the compound represented by formula 11 is selected from the following compounds: wherein D n This means that n hydrogen atoms are replaced by deuterium, and n is an integer from 1 to the maximum number of hydrogen atoms in the compound. [21] Organic electroluminescent compound represented by the following formula 12: where in Formula 12 R1 to R 16 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30)-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30)-ring and an aromatic (C6-C 30 )-ring stand; with the proviso that at least one of R1 to R 16 represented by the following formula 12-1: X for O, S, CR 44 R 45 or NR 46 stands; L1 for a single bond, a substituted or unsubstituted (C6-C 30 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene is present and L1 is connected to one of R 36 to R 46 is linked; and R 36 to R 46 Positions linked to L1 are or each independently for hydrogen, deuterium, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C6-C 30 )-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl. [22] Organic electroluminescent compound according to claim 21, wherein the compound represented by formula 12 is selected from the following compounds: wherein D n This means that n hydrogen atoms are replaced by deuterium, and n is an integer from 1 to the maximum number of hydrogen atoms in the compound. [23] Organic electroluminescent compound represented by the following formula 13: where in Formula 13 R 50 to R 61 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30)-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; with the proviso that at least one of R 50 to R 61 for -L 30 -Ar 30 stands; L 30 for a single bond, a substituted or unsubstituted (C6-C12 )-arylene or a substituted or unsubstituted (3- to 30-membered) heteroarylene; Ar 30 represented by the following formula B-1: any one of R 62 to R 71 with L 30 is linked R 62 to R 71 each independently with L 30 are linked or for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; R 67 and R 68 together to -O-, -S-, -NR 80 - or -CR 81 R 82 - can be linked; and R 80 , R 81 and R 82 each independently for a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C6-C 30)-aryl or a substituted or unsubstituted (3- to 30-membered) heteroaryl or a substituted or unsubstituted (C3-C 30 )-Cycloalkyl stand; R 81 and R 82 can be linked together to form one or more rings. [24] Organic electroluminescent compound according to claim 23, wherein the compound represented by formula 13 is selected from the following compounds: wherein D n This means that n hydrogen atoms are replaced by deuterium, and n is an integer from 1 to the maximum number of hydrogen atoms in the compound. [25] Organic electroluminescent compound according to claim 23, wherein formula B-1 is represented by the following formula B-1-1 or formula B-1-2: where in formulas B-1-1 and B-1-2 R 62 to R 66 and R 69 to R 71 as defined in claim 25; R 67 and R68 each independently with L 30 are linked or for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30)-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; T2 for -O-, -S-, -NR 80 - or -CR 81 R 82 - stands; and R 80 , R 81 and R 82 as defined in claim 25. [26] Organic electroluminescent compound according to claim 23, wherein formula 13 is represented by one of the following formulas 13-2 to 13-5: where in formulas 13-2 to 13-5 T2 for -O-, -S-, -NR 80 - or -CR 81 R 82 - stands; R 50 to R 71 , L 30 , R 80 , R 81 and R 82 as defined in claim 23; and L 30 with one of R 62 to R 71 is linked. [27] Organic electroluminescent device according to claim 23, wherein formula 13 is represented by the following formula 13-6 or 13-7: where in formulas 13-6 and 13-7 R 50 to R 71 and L 30 as defined in claim 23; and L 30 with one of R 64 to R 67 It may be linked. [28] Organic electroluminescent compound according to claim 23, wherein formula 13 comprises deuterium. [29] Organic electroluminescent compound represented by the following formula 31: where in Formula 31 R 51 to R 61 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30 )-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30)-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 30 )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30 )-ring and an aromatic (C6-C 30 )-ring stand; Ar1 and Ar2 each independently for hydrogen, deuterium or a substituted or unsubstituted (C6-C 30 )Aryl, provided that Ar1 and Ar2 are not both hydrogen; and R 100 to R 104 Each can stand independently for hydrogen or deuterium. [30] Organic electroluminescent compound according to claim 29, wherein the compound represented by formula 31 is selected from the following compounds: wherein D n This means that n hydrogen atoms are replaced by deuterium, and n is an integer from 1 to the maximum number of hydrogen atoms in the compound. [31] Organic electroluminescent compound represented by the following formula 1-5: where in Formula 1-5 R1 to R5 and R7 to R 16 each independently for hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C 30)-Alkyl, a substituted or unsubstituted (C2-C 30 )-Alkenyl, a substituted or unsubstituted (C6-C 30 )-Aryl, a substituted or unsubstituted (3- to 30-membered) heteroaryl, a substituted or unsubstituted (C3-C 30 )-Cycloalkyl, a substituted or unsubstituted (C3-C 30 )-Cycloalkenyl, a substituted or unsubstituted (3- to 7-membered) heterocycloalkyl, a substituted or unsubstituted (C1-C 30 )-Alkoxy, a substituted or unsubstituted tri-(C1-C 30 )-alkylsilyl, a substituted or unsubstituted di-(C1-C 30 )-alkyl-(C6-C 30 )-arylsilyl, a substituted or unsubstituted (C1-C 3o )-Alkyldi-(C6-C 30 )-arylsilyl, a substituted or unsubstituted tri-(C6-C 30 )-arylsilyl or a substituted or unsubstituted fused ring consisting of an aliphatic (C3-C 30)-ring and an aromatic (C6-C 30 )-ring stand; L stands for a single binding; Ar stands for substituted or unsubstituted phenanthrenyl; and Hydrogen in the above formula can be replaced by deuterium. [32] Organic electroluminescent compound according to claim 31, wherein the compound represented by formula 1-5 is selected from the following compounds:

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