NOVEL ORGANIC ELECTROLUMINESCENT COMPOUNDS AND ORGANIC ELECTROLUMINESCENT DEVICE USING THE SAME

1 . An organic electroluminescent compound represented by the following formula 1:

wherein

L 1 represents a single bond, a substituted or unsubstituted 5- to 30-membered heteroarylene group, a substituted or unsubstituted (C6-C30)arylene group, or a substituted or unsubstituted (C6-C30)cycloalkylene group;

X 1 represents CH or N;

Y represents —O—, —S—, —CR 11 R 12 — or —NR 13 —;

Ar 1 represents a single bond, a substituted or unsubstituted 5- to 30-membered heteroarylene group, a substituted or unsubstituted (C6-C30)arylene group, or a substituted or unsubstituted (C1-C30)alkylene group;

Ar 2 represents hydrogen, deuterium, a substituted or unsubstituted (C1-C30)alkyl group, a substituted or unsubstituted (C6-C30)aryl group, or a substituted or unsubstituted 5- to 30-membered heteroaryl group;

R 1 to R 5 each independently represent hydrogen, deuterium, a halogen, a substituted or unsubstituted (C1-C30)alkyl group, a substituted or unsubstituted (C6-C30)aryl group, a substituted or unsubstituted 5- to 30-membered heteroaryl group, a substituted or unsubstituted (C3-C30)cycloalkyl group, a substituted or unsubstituted 5- to 7-membered heterocycloalkyl group, a substituted or unsubstituted (C6-C30)aryl(C1-C30)alkyl group, a substituted or unsubstituted (C6-C30)aryl group fused with at least one (C3-C30)cycloalkyl group, a 5- or 7-membered heterocycloalkyl group fused with at least one substituted or unsubstituted (C6-C30)aromatic ring, (C3-C30)cycloalkyl group fused with at least one substituted or unsubstituted (C6-C30)aromatic ring, —NR 14 R 15 , —SiR 16 R 17 R 18 , —SR 19 , —OR 20 , a substituted or unsubstituted (C2-C30)alkenyl group, a substituted or unsubstituted (C2-C30)alkynyl group, a cyano group, a nitro group, or a hydroxyl group; or are linked to an adjacent substituent via a substituted or unsubstituted (C3-C30)alkylene group or a substituted or unsubstituted (C3-C30)alkenylene group to form a mono- or polycyclic alicyclic ring or a mono- or polycyclic aromatic ring whose carbon atom(s) may be substituted by at least one hetero atom selected from nitrogen, oxygen and sulfur;

R 11 to R 20 have the same meaning as one of R 1 to R 5 ,

a, b and e each independently represent an integer of 1 to 4; where a, b or e is an integer of 2 or more, each of R 1 , each of R 2 or each of R 5 is the same or different;

c and d each independently represent an integer of 1 to 3; where c or d is an integer of 2 or more, each of R 3 or each of R 4 is the same or different; and

the heterocycloalkyl group and the heteroaryl(ene) group contain at least one hetero atom selected from B, N, O, S, P(═O), Si and P.

2 . The organic electroluminescent compound according to claim 1 , characterized in that substituents of the substituted (C1-C30)alkyl group, the substituted (C2-C30)alkenyl group, the substituted (C2-C30)alkynyl group, the substituted (C6-C30)cycloalkylene group, the substituted (C3-C30)cycloalkyl group, the substituted 5- to 7-membered heterocycloalkyl group, the substituted (C6-C30)aryl(ene) group, the substituted 5- to 30-membered heteroaryl(ene) group and the substituted aromatic ring represented by said L 1 , Ar 1 , Ar 2 , R 1 to R 5 and R 11 to R 20 each independently is at least one selected from the group consisting of deuterium, a halogen, a cyano group, a carboxyl group, a nitro group, a hydroxyl group, a (C1-C30)alkyl group, a halo(C1-C30)alkyl group, a (C2-C30)alkenyl group, a (C2-C30)alkynyl group, a (C1-C30)alkoxy group, a (C1-C30)alkylthio group, a (C3-C30)cycloalkyl group, a (C3-C30)cycloalkenyl group, a 5- to 7-membered heterocycloalkyl group, a (C6-C30)aryl group, a (C6-C30)aryloxy group, a (C6-C30)arylthio group, a 5- to 30-membered heteroaryl group, a 5- to 30-membered heteroaryl group substituted by a (C6-C30)aryl group, a (C6-C30)aryl group substituted by a 5- to 30-membered heteroaryl group, a tri(C1-C30)alkylsilyl group, a tri(C6-C30)arylsilyl group, a di(C1-C30)alkyl(C6-C30)arylsilyl group, a (C1-C30)alkyldi(C6-C30)arylsilyl group, an amino group, a mono or di(C1-C30)alkylamino group, a mono or di(C6-C30)arylamino group, a (C1-C30)alkyl(C6-C30)arylamino group, a (C1-C30)alkylcarbonyl group, a (C1-C30)alkoxycarbonyl group, a (C1-C30)arylcarbonyl group, a di(C6-C30)arylbornyl group, a di(C1-C30)alkylbornyl group, a (C1-C30)alkyl(C6-C30)arylbornyl group, a (C6-C30)aryl(C1-C30)alkyl group and a (C1-C30)alkyl(C6-C30)aryl group.

3 . The organic electroluminescent compound according to claim 1 , characterized in that L 1 represents a single bond, a substituted or unsubstituted 5- or 30-membered heteroarylene group or a substituted or unsubstituted (C6-C30)arylene group; and Y represents —O—, —S—, —CR 11 R 12 — (wherein R 11 and R 12 each independently represent a substituted or unsubstituted (C1-C30)alkyl group) or —NR 13 — (wherein R 13 represents a halogen, deuterium, a substituted or unsubstituted (C6-C30)aryl group, or a substituted or unsubstituted 5- or 30-membered heteroaryl group).

4 . The organic electroluminescent compound according to claim 1 , characterized in that *—Ar 1 —Ar 2 is selected from the following structures:

5 . The organic electroluminescent compound according to claim 1 , characterized in that said compound is selected from the group consisting of:

6 . An organic electroluminescent device comprising the organic electroluminescent compound according to claim 1 .