Polycyclic aromatic compounds and organic electroluminescent devices using the same

1. An organic electroluminescent compound represented by Formula A-3, A-4, A-5 or A-6:

wherein X is B, Y are identical to or different from each other and are each independently selected from N-R 1 , CR 2 R 3 , O, S, Se, and SiR 4 R 5 , R 1 to R 5 are identical to or different from each other and are each independently selected from hydrogen, deuterium, substituted or unsubstituted C 3 -C 30 alkyl, substituted or unsubstituted C 2 -C 50 aryl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 2 -C 50 heteroaryl, substituted or unsubstituted C 1 -C 30 alkoxy, substituted or unsubstituted C 6 -C 30 aryloxy, substituted or unsubstituted C 1 -C 30 alkylthioxy, substituted or unsubstituted C 5 -C 30 arylthioxy, substituted or unsubstituted C 1 -C 30 alkylamine, substituted or unsubstituted C 5 -C 30 arylamine, substituted or unsubstituted C 1 -C 30 alkylsilyl, substituted or unsubstituted C 5 -C 30 arylsilyl, nitro, cyano, and halogen, Y 1 are identical to or different from each other and are each independently selected from CR 2 R 3 , O, S, Se, and SiR 4 R 5 , R 2 to R 5 are identical to or different from each other and are each independently selected from hydrogen, deuterium, substituted or unsubstituted C 1 -C 30 alkyl, substituted or unsubstituted C 6 -C 50 aryl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 2 -C 50 heteroaryl, substituted or unsubstituted C 1 -C 30 alkoxy, substituted or unsubstituted C 6 -C 30 aryloxy, substituted or unsubstituted C 1 -C 30 alkylthioxy, substituted or unsubstituted C 5 -C 30 arylthioxy, substituted or unsubstituted C 1 -C 30 alkylamine, substituted or unsubstituted C 5 -C 30 arylamine, substituted or unsubstituted C 1 -C 30 alkylsilyl, substituted or unsubstituted C 5 -C 30 arylsilyl, nitro, cyano, and halogen, with the proviso that R 2 and R 3 are optionally linked to each other to form an alicyclic or aromatic monocyclic or polycyclic ring, R 4 and R 5 are optionally linked to each other to form an alicyclic or aromatic monocyclic or polycyclic ring, each Z is independently CR or N, the substituents R are identical to or different from each other and are independently selected from hydrogen, deuterium, substituted or unsubstituted C 1 -C 30 alkyl, substituted or unsubstituted C 6 -C 50 aryl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 2 -C 50 heteroaryl, substituted or unsubstituted C 1 -C 30 alkoxy, substituted or unsubstituted C 6 -C 30 aryloxy, substituted or unsubstituted C 1 -C 30 alkylthioxy, substituted or unsubstituted C 5 -C 30 arylthioxy, substituted or unsubstituted C 1 -C 30 alkylamine, substituted or unsubstituted C 5 -C 30 arylamine, substituted or unsubstituted C 1 -C 30 alkylsilyl, substituted or unsubstituted C 5 -C 30 arylsilyl, nitro, cyano, and halogen, with the proviso that the substituents R are optionally bonded to each other or are optionally linked to other adjacent substituents to form alicyclic or aromatic monocyclic or polycyclic rings whose carbon atoms are optionally substituted with one or more heteroatoms selected from N, S, and O atoms.

2. The organic electroluminescent compound according to claim 1 , wherein the organic electroluminescent compound represented by Formula A-3, A-4, A-5 or A-6 is selected from the following compounds:

3. An organic electroluminescent device comprising a first electrode, a second electrode opposite to the first electrode, and one or more organic layers interposed between the first and second electrodes wherein at least one of the organic layers comprises the organic electroluminescent compound represented by Formula A-3, A-4, A-5 or A-6 according to claim 1 and optionally another organic electroluminescent compound represented by Formula A-3, A-4, A-5 or A-6.

4. The organic electroluminescent according to claim 3 , wherein the organic layers comprise an electron injecting layer, an electron transport layer, a hole injecting layer, a hole transport layer, an electron blocking layer, a hole blocking layer, and a light emitting layer, and at least one of the organic layers comprises the organic electroluminescent compound represented by Formula A-3, A-4, A-5 or A-6.

5. The organic electroluminescent according to claim 4 , wherein the light emitting layer comprises, as a host compound, an anthracene derivative represented by Formula C:

wherein R 21 to R 28 are identical to or different from each other and are as defined for R 1 to R 4 in Formula A-3, A-4, A-5 or A-6 representing the organic electroluminescent compound according to claim 1 , Ar 9 and Ar 10 are identical to or different from each other and are each independently selected from hydrogen, deuterium, substituted or unsubstituted C 1 -C 30 alkyl, substituted or unsubstituted C 6 -C 50 aryl, substituted or unsubstituted C 2 -C 30 alkenyl, substituted or unsubstituted C 2 -C 20 alkynyl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 2 -C 30 cycloalkenyl, substituted or unsubstituted C 1 -C 30 heteroaryl, substituted or unsubstituted C 6 -C 30 heterocycloalkyl, substituted or unsubstituted C 1 -C 30 alkoxy, substituted or unsubstituted C 6 -C 30 aryloxy, substituted or unsubstituted C 1 -C 30 alkylthioxy, substituted or unsubstituted C 6 -C 30 arylthioxy, substituted or unsubstituted C 1 -C 30 alkylamine, substituted or unsubstituted C 6 -C 30 arylamine, substituted or unsubstituted C 1 -C 30 alkylsilyl, and substituted or unsubstituted C 6 -C 30 arylsilyl, L 13 is a single bond or is selected from substituted or unsubstituted C 6 -C 20 arylene and substituted or unsubstituted C 2 -C 20 heteroarylene, and k is an integer from 1 to 3, provided that when k is 2 or more, the linkers L 13 are identical to or different from each other.

6. The organic electroluminescent according to claim 5 , wherein Ar 9 in Formula C is represented by Formula C-1:

wherein R 31 to R 35 are identical to or different from each other and are as defined for R 1 to R 4 in Formula A-3, A-4, A-5 or A-6 representing the organic electroluminescent compound according to claim 1 and each of R 31 to R 35 is optionally bonded to an adjacent substituent to form a saturated or unsaturated ring.

7. The organic electroluminescent according to claim 5 , wherein L 13 in Formula C is a single bond or is substituted or unsubstituted C 6 -C 20 arylene.

8. The organic electroluminescent according to claim 5 , wherein the compound of Formula C is selected from the compounds of Formulae C1 to C48:

9. The organic electroluminescent according to claim 4 , wherein each of the hole transport layer and the electron blocking layer comprises a compound represented by Formula D:

wherein R 41 to R 43 are identical to or different from each other and are each independently selected from hydrogen, deuterium, substituted or unsubstituted C 1 -C 20 alkyl, substituted or unsubstituted C 6 -C 50 aryl, substituted or unsubstituted C 7 -C 50 arylalkyl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 1 -C 30 alkylsilyl, substituted or unsubstituted C 6 -C 30 arylsilyl, and halogen, L 31 to L 34 are identical to or different from each other and are each independently single bonds or selected from substituted or unsubstituted C 6 -C 50 arylene and substituted or unsubstituted C 2 -C 50 heteroarylene, Ar 31 to Ar 34 are identical to or different from each other and are each independently selected from substituted or unsubstituted C 6 -C 50 aryl and substituted or unsubstituted C 2 -C 50 heteroaryl, n is an integer from 0 to 4, provided that when n is 2 or greater, the aromatic rings containing R 43 are identical to or different from each other, m 1 to m 3 are integers from 0 to 4, provided that when both m 1 and m 3 are 2 or more, the R 41 , R 42 , and R 43 groups are identical to or different from each other, and hydrogen or deuterium atoms are bonded to the carbon atoms of the aromatic rings to which R 41 to R 43 are not attached.

10. The organic electroluminescent according to claim 9 , wherein at least one of Ar 31 to Ar 34 in Formula D is represented by Formula E:

wherein R 51 to R 54 are identical to or different from each other and are each independently selected from hydrogen, deuterium, substituted or unsubstituted C 1 -C 30 alkyl, substituted or unsubstituted C 6 -C 50 aryl, substituted or unsubstituted C 2 -C 30 alkenyl, substituted or unsubstituted C 2 -C 20 alkynyl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 5 -C 30 cycloalkenyl, substituted or unsubstituted C 2 -C 50 heteroaryl, substituted or unsubstituted C 2 -C 30 heterocycloalkyl, substituted or unsubstituted C 1 -C 30 alkoxy, substituted or unsubstituted C 6 -C 30 aryloxy, substituted or unsubstituted C 1 -C 30 alkylthioxy, substituted or unsubstituted C 5 -C 30 arylthioxy, substituted or unsubstituted C 1 -C 30 alkylamine, substituted or unsubstituted C 5 -C 30 arylamine, substituted or unsubstituted C 1 -C 30 alkylsilyl, substituted or unsubstituted C 5 -C 30 arylsilyl, nitro, cyano, and halogen, which are optionally linked to each other to form a ring, Y is a carbon or nitrogen atom, Z is a carbon, oxygen, sulfur or nitrogen atom, Ar 35 to Ar 37 are identical to or different from each other and are each independently selected from substituted or unsubstituted C 5 -C 50 aryl and substituted or unsubstituted C 3 -C 50 heteroaryl, provided that when Z is an oxygen or sulfur atom, Ar 37 is nothing, provided that when Y and Z are nitrogen atoms, only one of Ar 35 , Ar 36 , and Ar 37 is present, provided that when Y is a nitrogen atom and Z is a carbon atom, Ar 36 is nothing, with the proviso that one of R 51 to R 54 and Ar 35 to Ar 37 is a single bond linked to one of the linkers L 31 to L 34 in Formula D.

11. The organic electroluminescent according to claim 9 , wherein the compound of Formula D is selected from the compounds of Formulae D1 to D79:

12. The organic electroluminescent according to claim 9 , wherein the compound of Formula D is selected from the compounds of Formulae D101 to D145:

13. The organic electroluminescent according to claim 4 , wherein each of the hole transport layer and the electron blocking layer comprises a compound represented by Formula F:

wherein R 61 to R 63 are identical to or different from each other and are each independently selected from hydrogen, deuterium, substituted or unsubstituted C 1 -C 30 alkyl, substituted or unsubstituted C 6 -C 50 aryl, substituted or unsubstituted C 2 -C 30 alkenyl, substituted or unsubstituted C 2 -C 20 alkynyl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 5 -C 30 cycloalkenyl, substituted or unsubstituted C 2 -C 50 heteroaryl, substituted or unsubstituted C 2 -C 30 heterocycloalkyl, substituted or unsubstituted C 1 -C 30 alkoxy, substituted or unsubstituted C 6 -C 30 aryloxy, substituted or unsubstituted C 1 -C 30 alkylthioxy, substituted or unsubstituted C 6 -C 30 arylthioxy, substituted or unsubstituted C 1 -C 30 alkylamine, substituted or unsubstituted C 6 -C 30 arylamine, substituted or unsubstituted C 1 -C 30 alkylsilyl, substituted or unsubstituted C 6 -C 30 arylsilyl, substituted or unsubstituted C 1 -C 30 alkylgermanium, substituted or unsubstituted C 1 -C 30 arylgermanium, cyano, nitro, and halogen, and Ar 51 to Ar 54 are identical to or different from each other and are each independently substituted or unsubstituted C 6 -C 40 aryl or substituted or unsubstituted C 2 -C 30 heteroaryl.

14. The organic electroluminescent according to claim 13 , wherein the compound of Formula F is selected from the compounds of Formulae F1 to F33:

15. The organic electroluminescent according to claim 4 , wherein one or more of the layers are formed by a deposition or solution process.

16. The organic electroluminescent according to claim 3 , wherein the organic electroluminescence device is used in a display or lighting system selected from flat panel displays, flexible displays, monochromatic flat panel lighting systems, white flat panel lighting systems, flexible monochromatic lighting systems, and flexible white lighting systems.

17. An organic electroluminescent compound represented by Formula 145:

18. An organic electroluminescent device comprising a first electrode, a second electrode opposite to the first electrode, and one or more organic layers interposed between the first and second electrodes wherein at least one of the organic layers comprises the organic electroluminescent compound represented by Formula 145 according to claim 17 and optionally another organic electroluminescent compound represented by Formula A-3, A-4, A-5 or A-6:

wherein X is B, Y are identical to or different from each other and are each independently selected from N-R 1 , CR 2 R 3 , O, S, Se, and SiR 4 R 5 , R 1 to R 5 are identical to or different from each other and are each independently selected from hydrogen, deuterium, substituted or unsubstituted C 1 -C 30 alkyl, substituted or unsubstituted C 6 -C 50 aryl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 2 -C 50 heteroaryl, substituted or unsubstituted C 1 -C 30 alkoxy, substituted or unsubstituted C 6 -C 30 aryloxy, substituted or unsubstituted C 1 -C 30 alkylthioxy, substituted or unsubstituted C 5 -C 30 arylthioxy, substituted or unsubstituted C 1 -C 30 alkylamine, substituted or unsubstituted C 5 -C 30 arylamine, substituted or unsubstituted C 1 -C 30 alkylsilyl, substituted or unsubstituted C 5 -C 30 arylsilyl, nitro, cyano, and halogen, with the proviso that R 2 and R 3 are optionally linked to each other to form an alicyclic or aromatic monocyclic or polycyclic ring, R 4 and R 5 are optionally linked to each other to form an alicyclic or aromatic monocyclic or polycyclic ring, each Z is independently CR or N, the substituents R are identical to or different from each other and are independently selected from hydrogen, deuterium, substituted or unsubstituted C 1 -C 30 alkyl, substituted or unsubstituted C 6 -C 50 aryl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 2 -C 50 heteroaryl, substituted or unsubstituted C 1 -C 30 alkoxy, substituted or unsubstituted C 6 -C 30 aryloxy, substituted or unsubstituted C 1 -C 30 alkylthioxy, substituted or unsubstituted C 5 -C 30 arylthioxy, substituted or unsubstituted C 1 -C 30 alkylamine, substituted or unsubstituted C 5 -C 30 arylamine, substituted or unsubstituted C 1 -C 30 alkylsilyl, substituted or unsubstituted C 5 -C 30 arylsilyl, nitro, cyano, and halogen, with the proviso that the substituents R are optionally bonded to each other or are optionally linked to other adjacent substituents to form alicyclic or aromatic monocyclic or polycyclic rings whose carbon atoms are optionally substituted with one or more heteroatoms selected from N, S, and O atoms.

19. The organic electroluminescent according to claim 18 , wherein the organic layers comprise an electron injecting layer, an electron transport layer, a hole injecting layer, a hole transport layer, an electron blocking layer, a hole blocking layer, and a light emitting layer, and at least one of the organic layers comprises the organic electroluminescent compound represented by Formula 145.

20. The organic electroluminescent according to claim 19 , wherein the light emitting layer comprises, as a host compound, an anthracene derivative represented by Formula C:

wherein R 21 to R 28 are identical to or different from each other and are as defined for R 1 to R 4 in Formula A-3, A-4, A-5 or A-6 representing the organic electroluminescent compound according to claim 18 , Ar 9 and Ar 10 are identical to or different from each other and are each independently selected from hydrogen, deuterium, substituted or unsubstituted C 1 -C 30 alkyl, substituted or unsubstituted C 6 -C 50 aryl, substituted or unsubstituted C 2 -C 30 alkenyl, substituted or unsubstituted C 2 -C 20 alkynyl, substituted or unsubstituted C 3 -C 30 cycloalkyl, substituted or unsubstituted C 5 -C 30 cycloalkenyl, substituted or unsubstituted C 2 -C 50 heteroaryl, substituted or unsubstituted C 2 -C 30 heterocycloalkyl, substituted or unsubstituted C 1 -C 30 alkoxy, substituted or unsubstituted C 6 -C 30 aryloxy, substituted or unsubstituted C 1 -C 30 alkylthioxy, substituted or unsubstituted C 6 -C 30 arylthioxy, substituted or unsubstituted C 1 -C 30 alkylamine, substituted or unsubstituted C 6 -C 30 arylamine, substituted or unsubstituted C 1 -C 30 alkylsilyl, and substituted or unsubstituted C 6 -C 30 arylsilyl, L 13 is a single bond or is selected from substituted or unsubstituted C 6 -C 20 arylene and substituted or unsubstituted C 2 -C 20 heteroarylene, and k is an integer from 1 to 3, provided that when k is 2 or more, the linkers L 13 are identical to or different from each other.