Organic electroluminescent compounds and organic electroluminescent device comprising the same
View Patent ↗The present invention relates to a novel organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound of the present invention has high luminous efficiency, and thus can be used as a host in a light-emitting layer; and an organic electroluminescent device comprising the organic electroluminescent compounds of the present invention has long operating lifespan, provides improved current efficiency and power efficiency, and gives colors having high purity.
1. An organic electroluminescent compound represented by the following formula 1 or formula 2:
wherein
X and Y each independently represent —CR 13 — or —N—, with the proviso that X and Y do not simultaneously represent —CR 13 —;
W and V each independently represent a single bond, O or S; and
R 1 to R 13 each independently represent hydrogen, deuterium, a halogen, a cyano group, a substituted or unsubstituted (C1-C30)alkyl group, a substituted or unsubstituted (C6-C30)aryl group, a substituted or unsubstituted 3- to 30-membered heteroaryl group, a substituted or unsubstituted (C3-C30)cycloalkyl group, a substituted or unsubstituted (C1-C30)alkoxy group, a substituted or unsubstituted tri(C1-C30)alkylsilyl group, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl group, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl group, a substituted or unsubstituted tri(C6-C30)arylsilyl group, a substituted or unsubstituted mono- or di(C1-C30)alkylamino group, a substituted or unsubstituted mono- or di(C6-C30)arylamino group, or a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino group; or are linked to an adjacent substituent(s) to form a substituted or unsubstituted mono- or polycyclic (C3-C30) alicyclic or aromatic ring whose carbon atom(s) may be replaced with at least one hetero atom selected from nitrogen, oxygen, and sulfur.
2. The organic electroluminescent compound according to claim 1 , wherein R 1 to R 13 in formulae 1 and 2 each independently represent hydrogen, a substituted or unsubstituted (C6-C20)aryl group, or a substituted or unsubstituted 5- to 20-membered heteroaryl group.
3. The organic electroluminescent compound according to claim 1 , wherein R 1 to R 13 in formulae 1 and 2 each independently represent hydrogen, or a substituted or unsubstituted (C6-C12)aryl group.
4. The organic electroluminescent compound according to claim 1 , wherein the substituents of the substituted alkyl group, the substituted cycloalkyl group, the substituted aryl group, the substituted heteroaryl group, the substituted alkoxy group, the substituted alkylsilyl group, the substituted arylsilyl group, the substituted alkylamino group, the substituted arylamino group, or the substituted mono- or polycyclic (C3-C30) alicyclic or aromatic ring in formulae 1 and 2 are each independently 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 3- to 7-membered heterocycloalkyl group; a (C6-C30)aryloxy group; a (C6-C30)arylthio group; a 3- to 30-membered heteroaryl group which is unsubstituted or substituted with a (C6-C30)aryl group; a (C6-C30)aryl group which is unsubstituted or substituted with a 3- 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 (C6-C30)arylcarbonyl group; a di(C6-C30)arylboronyl group; a di(C1-C30)alkylboronyl group; a (C1-C30)alkyl(C6-C30)arylboronyl group; a (C6-C30)aryl(C1-C30)alkyl group; and a (C1-C30)alkyl(C6-C30)aryl group.
5. The organic electroluminescent compound according to claim 1 , wherein the compound represented by formula 1 or 2 is selected from the group consisting of the following compounds:
6. An organic electroluminescent device comprising the organic electroluminescent compound according to claim 1 .