Composition for organic optoelectronic device, organic optoelectronic device, and display device

Abstract

The present invention relates to a composition for an organic optoelectronic device, the composition comprising: a first host compound represented by Chemical Formula 1 below; and a second host compound represented by Chemical Formula 2 below, to an organic optoelectronic device using the composition and a display device. The details of Chemical Formulas 1 and 2 above are as defined in the specification.

1 . A composition for an organic optoelectronic device comprising
 a first host compound represented by Chemical Formula 1; and   a second host compound represented by Chemical Formula 2:   
       
         
           
           
               
               
           
         
         wherein, in Chemical Formula 1, 
         X is O or S, 
         L 1  to L 3  are independently a single bond, or a substituted or unsubstituted C6 to C20 arylene group, 
         X 1  to X 3  are independently N or CR a , 
         at least two of X 1  to X 3  are N, 
         R 1  to R 3  are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C12 aryl group, or a combination thereof, 
         R a  is hydrogen, deuterium, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, or a combination thereof, and 
         R b  and R c  are independently a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, or a combination thereof, 
         wherein “substituted” of Chemical Formula 1 refers to replacement of at least one hydrogen by deuterium, a C6 to C30 aryl group, a dibenzofuranyl group, or a dibenzothiophenyl group; 
       
       
         
           
           
               
               
           
         
         wherein, in Chemical Formula 2, 
         Y 1  and Y 2  are independently a single bond, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 heteroarylene group, or a combination thereof, 
         Z 1  and Z 2  are independently a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heterocyclic group, or a combination thereof, 
         R 4  to R 9  are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heterocyclic group, or a combination thereof, and 
         m is one of integers of 0 to 2; 
         wherein “substituted” of Chemical Formula 2 refers to replacement of at least one hydrogen by deuterium, a C1 to C4 alkyl group, a C6 to C18 aryl group, or a C2 to C30 heteroaryl group. 
       
     
     
         2 . The composition for an organic optoelectronic device of  claim 1 , wherein Chemical Formula 1 is represented by one of Chemical Formula 1-A, Chemical Formula 1-B, and Chemical Formula 1-C: 
       
         
           
           
               
               
           
         
         wherein, in Chemical Formula 1-A, Chemical Formula 1-B, and Chemical Formula 1-C, 
         X is O or S, 
         L 1  to L 3  are independently a single bond, or a substituted or unsubstituted C6 to C20 arylene group, 
         R 1  to R 3  are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C12 aryl group, or a combination thereof, 
         R a  is hydrogen, deuterium, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, or a combination thereof, and 
         R b  and R c  are independently a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, or a combination thereof. 
       
     
     
         3 . The composition for an organic optoelectronic device of  claim 1 , wherein
 R a  is hydrogen, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracenyl group, a substituted or unsubstituted phenanthrenyl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group, and   R b  and R c  are independently a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracenyl group, a substituted or unsubstituted phenanthrenyl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group.   
     
     
         4 . The composition for an organic optoelectronic device of  claim 1 , wherein
 R a  is hydrogen or selected from substituents of Group II, and   R b  and R c  are independently selected from substituents of Group II:   
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         wherein, in Group II, * is a linking point with adjacent atoms. 
       
     
     
         5 . The composition for an organic optoelectronic device of  claim 1 , wherein
 L 1  to L 3  are independently a single bond, a para-phenylene group, a meta-phenylene group, or a biphenylene group,   R 1  to R 3  are independently hydrogen,   R a  is hydrogen or a phenyl group, and   R b  and R c  are independently, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group,   wherein “substituted” refers to replacement of at least one hydrogen by a phenyl group, a biphenyl group, a terphenyl group, naphthyl group, a triphenylene group, a dibenzofuranyl group, or a dibenzothiophenyl group.   
     
     
         6 . The composition for an organic optoelectronic device of  claim 1 , wherein Z 1  and Z 2  of Chemical Formula 2 are independently a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracenyl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group, a substituted or unsubstituted triazinyl group, a substituted or unsubstituted quinolinyl group, a substituted or unsubstituted isoquinolinyl group, a substituted or unsubstituted quinazolyl group, a substituted or unsubstituted dibenzothiophenyl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted fluorenyl group, or a combination thereof. 
     
     
         7 . The composition for an organic optoelectronic device of  claim 1 , wherein
 Chemical Formula 2 is one of structures of Group III, and   *—Y 1 —Z 1  and *—Y 2 —Z 2  are one of substituents of Group IV:   
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         wherein, in Groups III and IV, * is a linking point with adjacent atoms. 
       
     
     
         8 . The composition for an organic optoelectronic device of  claim 7 , wherein
 Chemical Formula 2 is represented by C-8 or C-17 of Group III and   *—Y 1 —Z 1  and *—Y 2 —Z 2  are independently selected from B-1 to B-6 of Group IV.   
     
     
         9 . The composition for an organic optoelectronic device of  claim 1 , wherein
 Chemical Formula 1 is represented by Chemical Formula 1-A or Chemical Formula 1-B,   Chemical Formula 2 is represented by Chemical Formula C-8 or Chemical Formula C-17, and   *—Y 1 —Z 1  and *—Y 2 —Z 2  of Chemical Formula 2 are selected from B-1, B-2, B-3, B-5, and B-6:   
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         wherein, in Chemical Formula 1-A and Chemical Formula 1-B, 
         X is O or S, 
         L 1  to L 3  are independently a single bond, a para-phenylene group, a meta-phenylene group, or a biphenylene group, 
         R 1  to R 3  are independently hydrogen, 
         R a  is hydrogen or a phenyl group, and 
         R b  and R c  are independently, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group, 
         wherein “substituted” refers to replacement of at least one hydrogen by a phenyl group, a biphenyl group, a terphenyl group, naphthyl group, a triphenylene group, a dibenzofuranyl group, or a dibenzothiophenyl group. 
       
     
     
         10 . An organic optoelectronic device, comprising
 an anode and a cathode facing each other, and   at least one organic layer disposed between the anode and the cathode   wherein the organic layer comprises the composition for an organic optoelectronic device of  claim 1 .   
     
     
         11 . The organic optoelectronic device of  claim 10 , wherein
 the organic layer comprises a light emitting layer, and   the composition for an organic optoelectronic device is included as a host of the light emitting layer.   
     
     
         12 . A display device comprising the organic optoelectronic device of  claim 10 .