Organic electroluminescent compound and organic electroluminescent device containing the same

Abstract

The present disclosure provides an organic electroluminescent compound represented by the following formula (II): wherein each of R 1 to R 12 independently represents hydrogen, deuterium, a halogen, a substituted or unsubstituted (C1-C30) alkyl group, a substituted or unsubstituted (C6-C30) aryl group, or a substituted or unsubstituted 3- to 30-membered heteroaryl group; or is linked to one or more adjacent substituents to form a mono- or polycyclic, alicyclic or aromatic ring whose carbon atom(s) may be replaced by at least one atom selected from nitrogen, oxygen and sulfur; and the heteroaryl group contains at least one atom selected from B, N, O, S, P(═O), Si and P.

What is claimed is: 
     
         1 . An organic electroluminescent compound represented by the following formula (II): 
       
         
           
           
               
               
           
         
         wherein each of R 1  to R 12  independently represents hydrogen, deuterium, a halogen, a substituted or unsubstituted (C1-C30) alkyl group, a substituted or unsubstituted (C6-C30) aryl group, or a substituted or unsubstituted 3- to 30-membered heteroaryl group; or is linked to one or more adjacent substituents to form a mono- or polycyclic, alicyclic or aromatic ring whose carbon atom(s) may be replaced by at least one atom selected from nitrogen, oxygen and sulfur; and the heteroaryl group contains at least one atom selected from B, N, O, S, P(═O), Si and P. 
       
     
     
         2 . The organic electroluminescent compound of  claim 1 , wherein each of the substituents of the substituted groups in R 1  to R 12  independently includes at least one selected from the group consisting of deuterium, a halogen, a (C1-C30)alkyl group, a (C1-C30)alkyl group substituted with a halogen, a (C6-C30)aryl group, a 3- to 30-membered heteroaryl group, a 3- to 30-membered heteroaryl group substituted with a (C6-C30)aryl group, a (C6-C30)aryl group substituted with a 3- to 30-membered heteroaryl group, a (C3-C30)cycloalkyl group, a 5- to 7-membered heterocycloalkyl group, 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, a (C2-C30)alkenyl group, a (C2-C30)alkynyl group, a cyano group, a di(C1-C30)alkylamino group, a di(C6-C30)arylamino group, a (C1-C30)alkyl(C6-C30)arylamino 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, a (C1-C30)alkyl(C6-C30)aryl group, a carboxyl group, a nitro group, and a hydroxyl group. 
     
     
         2 . The organic electroluminescent compound of  claim 2 , wherein each of R 1  to R 12  is independently substituted with at least one selected from the group consisting of deuterium, chloro, fluoro, methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, t-butyl, n-pentyl, i-pentyl, n-hexyl, n-heptyl, n-octyl, 2-ethylhexyl, n-nonyl, decyl, dodecyl, hexadecyl, trifluoromethyl, perfluoroethyl, trifluoroethyl, perfluoropropyl, perfluorobutyl, phenyl, biphenyl, fluorenyl, fluoranthenyl, triphenylenyl, pyrenyl, chrysenyl, naphthacenyl, perylenyl, fluorotrimethylsilyl, triethylsilyl, tripropylsilyl, tri(t-butyl)silyl, t-butyldimethylsilyl, dimethylphenylsilyl, carbazolyl and triphenylsilyl, and more preferably at least one selected from the group consisting of deuterium, chloro, fluoro, methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, t-butyl, n-pentyl, i-pentyl, n-hexyl, n-heptyl, n-octyl, 2-ethylhexyl, n-nonyl and decyl. 
     
     
         4 . The organic electroluminescent compound of  claim 1 , wherein the aryl group includes a monocyclic ring or fused ring, each of whose rings has 4 to 7 ring backbone atoms. 
     
     
         5 . The organic electroluminescent compound of  claim 1 , wherein the aryl group includes phenyl, biphenyl, terphenyl, naphthyl, anthryl, indenyl, fluorenyl, phenanthrenyl, triphenylenyl, pyrenyl, perylenyl, chrysenyl, naphthacenyl, and fluoranthenyl, wherein said naphthyl includes 1-naphthyl and 2-naphthyl, said anthryl includes 1-anthryl, 2-anthryl and 9-anthryl and said fluorenyl includes 1-fluorenyl, 2-fluorenyl, 3-fluorenyl, 4-fluorenyl and 9-fluorenyl. 
     
     
         6 . The organic electroluminescent compound of  claim 1 , wherein the heteroaryl group includes a monocyclic ring-type heteroaryl, a fused ring-type heteroaryl, N-oxides thereof, and quaternary salts thereof. 
     
     
         7 . The organic electroluminescent compound of  claim 6 , wherein the monocyclic ring-type heteroaryl includes furyl, thiophenyl, pyrrolyl, imidazolyl, pyrazolyl, thiazolyl, thiadiazolyl, isothiazolyl, isoxazolyl, oxazolyl, oxadiazolyl, triazinyl, tetrazinyl, triazolyl, tetrazolyl, furazanyl, pyridyl, pyrazinyl, pyrimidinyl, and pyridazinyl. 
     
     
         8 . The organic electroluminescent compound of  claim 6 , wherein the fused ring-type heteroaryl includes benzofuranyl, benzothiophenyl, isobenzofuranyl, benzoimidazolyl, benzothiazolyl, benzoisothiazolyl, benzoisoxazolyl, benzoxazolyl, isoindolyl, indolyl, indazolyl, benzothiadiazolyl, quinolyl, isoquinolyl, cinnolinyl, quinazolinyl, quinoxalinyl, carbazolyl, phenanthridinyl, benzodioxolyl, dibenzofuranyl, and dibenzothiophenyl.