Organic electroluminescent compound and organic electroluminescent device comprising the same

Abstract

The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. The organic electroluminescent compound of the present disclosure may be comprised in a light-emitting layer, and is effective for producing an organic electroluminescent device having high luminescent efficiency and/or excellent lifespan characteristic.

1 . An organic electroluminescent compound represented by the following formula 1: 
       
         
           
           
               
               
           
         
         wherein 
         R 1  to R 8  each independently represent hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (5- to 30-membered)heteroaryl, with a proviso that one of R 2  to R 4  is bonded to R 
       
       
         
           
           
               
               
           
         
         R 9  to R 16  each independently represent hydrogen or deuterium; 
         Ar 1  represents a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (5- to 30-membered)heteroaryl; 
         D N  means that N hydrogen atoms are substituted with deuterium; and 
         N represents an integer of 8 to 50. 
       
     
     
         2 . The organic electroluminescent compound according to  claim 1 , wherein formula 1 is represented by any one of the following formulas 1-1 to 1-3: 
       
         
           
           
               
               
           
         
         wherein 
         R 1  to R 8 , R 9  to R 18 , Ar 1 , and D N  are as defined in  claim 1 ; and 
         N represents an integer of 8 to 30. 
       
     
     
         3 . The organic electroluminescent compound according to  claim 1 , wherein the substituents of the substituted alkyl, the substituted aryl, and the substituted heteroaryl in R 1  to R 8 , and Ar 1  each independently are at least one selected from the group consisting of deuterium; a halogen; a cyano; a carboxyl; a nitro; a hydroxyl; a (C1-C30)alkyl; a halo(C1-C30)alkyl; a (C2-C30)alkenyl; a (C2-C30)alkynyl; a (C1-C30)alkoxy; a (C1-C30)alkythio; a (C3-C30)cycloalkyl; a (C3-C30)cycloalkenyl; a (3- to 7-membered)heterocycloalkyl; a (C6-C30)aryloxy; a (C6-C30)arylthio; a (3- to 30-membered)heteroaryl unsubstituted or substituted with a (C6-C30)aryl(s); a (C6-C30)aryl unsubstituted or substituted with at least one of a (C1-C30)alkyl(s) and a (3- to 30-membered)heteroaryl(s); a tri(C1-C30)alkylsilyl; a tri(C6-C30)arylsilyl; a di(C1-C30)alkyl(C6-C30)arylsilyl; a (C1-C30)alkyldi(C6-C30)arylsilyl; an amino; a mono- or di-(C1-C30)alkylamino; a mono- or di-(C6-C30)arylamino; a (C1-C30)alkyl(C6-C30)arylamino; a (C1-C30)alkylcarbonyl; a (C1-C30)alkoxycarbonyl; a (C6-C30)arylcarbonyl; a di(C6-C30)arylboronyl; a di(C1-C30)alkylboronyl; a (C1-C30)alkyl(C6-C30)arylboronyl; a (C6-C30)aryl(C1-C30)alkyl; and a (C1-C30)alkyl(C6-C30)aryl. 
     
     
         4 . The organic electroluminescent compound according to  claim 1 , wherein
 R 1  to R 8  which are not bonded to   
       
         
           
           
               
               
           
         
       
       each independently represent hydrogen or deuterium; and
 Ar 1  represents a substituted or unsubstituted (C6-C25)aryl, or a substituted or unsubstituted (5- to 20-membered)heteroaryl. 
 
     
     
         5 . The organic electroluminescent compound according to  claim 1 , wherein
 R 1  to R 8  which are not bonded to   
       
         
           
           
               
               
           
         
       
       each independently represent hydrogen or deuterium; and
 Ar 1  represents a (C6-C25)aryl unsubstituted or substituted with at least one of a (C1-C6)alkyl(s), a (C6-C15)aryl(s), and a (5- to 15-membered)heteroaryl(s); or a (5- to 20-membered)heteroaryl unsubstituted or substituted with a (C6-C12)aryl(s). 
 
     
     
         6 . The organic electroluminescent compound according to  claim 1 , wherein N represents an integer of 13 to 30. 
     
     
         7 . The organic electroluminescent compound according to  claim 1 , wherein the compound represented by formula 1 is selected from the group consisting of the following compounds: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
         8 . An organic electroluminescent material comprising the organic electroluminescent compound according to  claim 1 . 
     
     
         9 . An organic electroluminescent device comprising the organic electroluminescent compound according to  claim 1 . 
     
     
         10 . The organic electroluminescent device according to  claim 9 , wherein the organic electroluminescent compound is comprised in a light-emitting layer.