ORGANIC ELECTROLUMINESCENT COMPOUND AND ORGANIC ELECTROLUMINESCENT DEVICE COMPRISING THE SAME

1 . An organic electroluminescent compound represented by the following formula 1, wherein an organic electroluminescent device comprising the organic electroluminescent compound represents a deep red color:

wherein

R 1 represents a substituted or unsubstituted (C4-C6)alkyl,

R 2 and R 3 , each independently, represent a substituted or unsubstituted (C1-C5)alkyl, and

R 4 to R 6 , each independently, represent hydrogen, deuterium, a substituted or unsubstituted (C1-C5)alkyl, or a substituted or unsubstituted (C5-C30)aryl; or are linked to an adjacent substituent to form a substituted or unsubstituted, mono- or polycyclic, (C3-C30) alicyclic or aromatic ring, or the combination thereof, wherein the carbon atom(s) of the alicyclic or aromatic ring, or the combination thereof may be replaced with at least one heteroatom selected from the group consisting of nitrogen, oxygen, and sulfur.

2 . The organic electroluminescent compound according to claim 1 ,

wherein the organic electroluminescent device comprising the organic electroluminescent compound represents an X value of 0.68 or more in the CIE 1931 colorimetric system.

3 . The organic electroluminescent compound according to claim 1 ,

wherein

R 1 represents a (C4-C6)alkyl unsubstituted or substituted with deuterium, and

R 2 and R 3 , each independently, represent (C1-C5)alkyl unsubstituted or substituted with deuterium.

4 . The organic electroluminescent compound according to claim 1 ,

wherein

the (C4-C6)alkyl is any one selected from the group consisting of n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl and 3-pentyl, and

the (C1-C5)alkyl is any one selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, tert-pentyl, neopentyl, isopentyl, sec-pentyl and 3-pentyl.

5 . The organic electroluminescent compound according to claim 1 ,

wherein

the structure of

in the formula 1 represents any one selected from the group consisting of:

6 . The organic electroluminescent compound according to claim 1 ,

wherein

the structure of

in the formula 1 represents any one selected from the group consisting of:

7 . The organic electroluminescent compound according to claim 1 ,

wherein the compound represented by formula 1 is selected from the group consisting of:

8 . An organic electroluminescent device comprising a cathode, an anode, and an organic layer disposed between the cathode and the anode,

wherein the organic layer comprises the compound represented by formula 1 recited in claim 1 .

9 . The organic electroluminescent device according to claim 8 , further comprising a compound represented by any one of the following formulas 2 to 4:

wherein

Ma represents a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (6- to 30-membered)heteroaryl,

La represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (6- to 30-membered)heteroarylene,

A represents S, O, NRS, or CR 8 R 9 ,

Xa to Xh, each independently, represent hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C2-C30)alkenyl, a substituted or unsubstituted (C2-C30)alkynyl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C6-C60)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted tri(C6-C30)arylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino, or a substituted or unsubstituted mono- or di-(C6-C30)arylamino; or are linked to an adjacent substituent to form a substituted or unsubstituted, mono- or polycyclic, (C3-C30) alicyclic or aromatic ring, or the combination thereof, wherein the carbon atom(s) of the alicyclic or aromatic ring, or the combination thereof may be replaced with at least one heteroatom from the group consisting of nitrogen, oxygen, and sulfur,

R 7 to R 9 , each independently, represent hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, a substituted or unsubstituted tri(C6-C30)arylsilyl, a substituted or unsubstituted mono- or di-(C1-C30)alkylamino, a substituted or unsubstituted mono- or di-(C6-C30)arylamino, or a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino; or R 8 and R 9 are linked to each other to form a substituted or unsubstituted, mono- or polycyclic, (C3-C30) alicyclic or aromatic ring, or the combination thereof, wherein the carbon atom(s) of the alicyclic or aromatic ring, or the combination thereof may be replaced with at least one heteroatom selected from the group consisting of nitrogen, oxygen, and sulfur, and

the heteroaryl(ene) contains at least one heteroatom selected from the group consisting of B, N, O, S, Si, and P.

10 . The organic electroluminescent device according to claim 9 ,

wherein the organic electroluminescent device comprises the compound represented by the formula 1 as a dopant, and the compound represented by any one of the formulas 2 to 4 as a host.