Organic electroluminescence device and electronic device

Abstract

An organic electroluminescence device includes: a cathode; an anode; and an organic layer having one or more layers and provided between the anode and the cathode, in which the organic layer includes an emitting layer, and the emitting layer includes a first host material, a second host material and a phosphorescent dopant material. The first host material is a compound represented by a formula (1) below. The second host material is a compound represented by a formula (4) below.

What is claimed is: 
     
       1. An organic electroluminescence device, comprising:
 a cathode; 
 an anode; and 
 an organic layer having one or more layers and provided between the anode and the cathode, wherein 
 the organic layer comprises an emitting layer, 
 the emitting layer comprises a first host material, a second host material, and a phosphorescent dopant material, 
 the first host material is a compound represented by a formula (1) below, and 
 the second host material is a compound represented by a formula (4) one of formulae (7) to (9) below, 
 
       
         
           
           
               
               
           
         
         where: 
         X 1  to X 3  each are a nitrogen atom or CR 1  with a proviso that at least one of two or three of X 1  to X 3  is a are nitrogen atom atoms; 
         R 1  independently represents a hydrogen atom, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; 
         A is represented by a formula (2) below; and 
         Ar 11  and Ar 12  are each independently represented by the formula (2), or a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, 
       
       
         
           
           
               
               
           
         
         wherein Ar 11  and Ar 12  are different, one of Ar 11  and Ar 12  in the first host material is an aromatic hydrocarbon group having 6 to 30 ring carbon atoms substituted by a heterocyclic group, and where: 
         HAr 1  is represented by a formula (3) below; 
         m is 1 or 2; 
         when m is 1, L 1  is a single bond or a divalent linking group derived from one of benzene, biphenyl, terphenyl, naphthalene and phenanthrene; 
         when m is 2, L 1  is a trivalent linking group and HAr 1  are the same or different; 
         the linking group in L 1  is a substituted or unsubstituted divalent or trivalent aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted divalent or trivalent heterocyclic group having 5 to 30 ring atoms, or a divalent or trivalent multiple linking group provided by bonding two or three groups selected from the aromatic hydrocarbon group and the heterocyclic group; and 
         in the multiple linking group, the aromatic hydrocarbon group and the heterocyclic group forming the multiple linking group are mutually the same or different and are optionally mutually bonded to form a ring, 
       
       
         
           
           
               
               
           
         
         where: 
         Z 11  to and Z 18  each independently represent a nitrogen atom, CR 11 ; 
         Z 12  to Z 17  each independently represent CR 11  or a carbon atom to be bonded to L 1  by a single bond; 
         Y 1  represents an oxygen atom, a sulfur atom, SiR 12 R 13  or a silicon atom to be bonded to L 1  by a single bond; 
         one of the carbon atom at Z 12  to Z 17  Z 11  to Z 18  and R 11  to R 13  and the silicon atom at Y 1  is bonded to L 1 ; 
         with a proviso that when Z 11  is CR 11 , the carbon atom at R 11  is not bonded to L 1  and when Z 18  is CR 11 , the carbon atom at R 11  is not bonded to L 1 ;  
         R 11 , represents a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted furyl group, a substituted or unsubstituted thienyl group, a substituted or unsubstituted oxazolyl group, a substituted or unsubstituted thiazolyl group, a substituted or unsubstituted isoxazolyl group, a substituted or unsubstituted isothiazolyl group, a substituted or unsubstituted oxadiazolyl group, a substituted or unsubstituted thiadiazolyl group, a substituted or unsubstituted benzofuranyl group, a substituted or unsubstituted benzothiophenyl group, a substituted or unsubstituted benzoxazolyl group, a substituted or unsubstituted benzothiazolyl group, a substituted or unsubstituted benzisoxazolyl group, a substituted or unsubstituted benzisothiazolyl group, a substituted or unsubstituted benzoxadiazolyl group, a substituted or unsubstituted benzothiadiazolyl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, a substituted or unsubstituted piperidinyl group, a substituted or unsubstituted pyrrolidinyl group, a substituted or unsubstituted piperazinyl group, a substituted or unsubstituted morpholyl group, a substituted or unsubstituted phenazinyl group, a substituted or unsubstituted phenothiazinyl group, or a substituted or unsubstituted phenoxazinyl group; R 12  and R 13  represent the same as R 1  of the formula (1); a plurality of R 11  are mutually the same or different; adjacent ones of R 11  are optionally bonded to each other to form a ring; 
         R 12  and R 13  are mutually the same or different; and R 12  and R 13  are optionally bonded to each other to form a ring, 
       
       
         
           
           
               
               
           
         
       
       
        
         where: 
         Y 2  is represented by a formula (4-B) below; 
         one of Z 21  to Z 28  is a carbon atom to be bonded to L 211  in a formula (5) below, or a pair of adjacent ones of Z 21  to Z 28  are carbon atoms to be bonded to b and c in one of formulae (6-1) to (6-4) below to form a fused ring; 
         Z 21  to Z 28  which are not bonded to L 211,  b and c are CR 21 ; R 21  represents the same as R 1  of the formula (1); and a plurality of R 21  are mutually the same or different, 
       
       
         
           
           
               
               
           
         
         where: 
         Ar 210  is a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; 
         p is an integer of 1 to 3; 
         when p is 2 or more, a plurality of Ar 210  are mutually the same or different; 
         L 2  represents a single bond or a linking group; 
         the linking group in L 2  is a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms, or a polyvalent multiple linking group provided by bonding two or three groups selected from the aromatic hydrocarbon group and the heterocyclic group; and 
         in the multiple linking group, the aromatic hydrocarbon group and the heterocyclic group forming the multiple linking group are mutually the same or different and are optionally mutually bonded to form a ring, 
       
       
         
           
           
               
               
           
         
         where: 
         L 211  is a single bond or a linking group which is bonded to one of Z 21  to Z 28  in the formula (4); 
         the linking group in L 211  is a substituted or unsubstituted divalent or trivalent aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted divalent or trivalent heterocyclic group having 5 to 30 ring atoms, or a divalent or trivalent multiple linking group provided by bonding two or three groups selected from the aromatic hydrocarbon group and the heterocyclic group; 
         in the multiple linking group, the aromatic hydrocarbon group and the heterocyclic group forming the multiple linking group are mutually the same or different and are optionally mutually bonded to form a ring; 
         R 211 , R 212 , R 213 , and R 214  represent a hydrogen atom; 
         s2 is 4 and t2 is 3;  
         Ar 211  is a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; 
         R 211  and R 212  represent the same as R 1  of the formula (1); 
         s is 3 and t is 4; and 
         a plurality of R 211  and R 212  are mutually the same or different, 
       
       
         
           
           
               
               
           
         
         where: 
         b and c are bonded to one of the pair of adjacent ones of Z 21  to Z 28  to form a fused ring; 
         Ar 221  is a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; 
         R 221  to R 223  represent the same as R 1  of the formula (1); 
         u is 4; a plurality of R 221  are mutually the same or different; and adjacent ones of R 221  are optionally bonded to each other to form a ring. 
       
     
     
       2. The organic electroluminescence device according to  claim 1 , wherein
 the second host material is a compound represented by one of formulae (7) to (9) below,   
       
         
           
           
               
               
           
         
       
       where:
 Ar 210 , L 2  and p respectively represent the same as Ar 210 , L 2  and p of the formula (4-B); 
 when p is 2 or more, a plurality of Ar 210  are the same or different; 
 R 213  and R 214  represent the same as R 1  of the formula (1); a plurality of R 213  and R 214  are mutually the same or different; 
 s2 is 4 and t2 is 3; and 
 Ar 211 , R 211 , R 212 , s and t respectively represent the same as Ar 211 , R 211 , R 212 , s and t of the formula (5). 
 
     
     
       3. The organic electroluminescence device according to  claim 1 , wherein
 the second host material is a compound represented by one of formulae (10) to (27) below,   
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
       where:
 Ar 210 , L 2  and p respectively represent the same as Ar 210 , L 2  and p of the formula (4-B); 
 when p is 2 or more, a plurality of Ar 210  are mutually the same or different; 
 Ar 221  is a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; 
 R 221 , R 224 , R 231  and R 232  represent the same as R 1  of the formula (1); 
 u and u2 are 4; 
 a plurality of R 221  and R 224  are mutually the same or different; and 
 adjacent ones of R 221 , adjacent ones of R 224 , and R 2 ″ and R 232  are optionally respectively bonded to each other to form a ring. 
 
     
     
       4. The organic electroluminescence device according to  claim 1 , wherein
 Y 1  in the formula (3) is an oxygen atom or a sulfur atom.   
     
     
       5. The organic electroluminescence device according to  claim 1 , wherein Y 1  in the formula (3) is an oxygen atom or a sulfur atom, and one of Z 11  to Z 18  Z 12  to Z 17  is a carbon atom to be bonded to L 1  by a single bond and the rest of Z 11  to Z 18  Z 12  to Z 17 , which are not bonded to L 1 , are CR 11 . 
     
     
       6. The organic electroluminescence device according to  claim 1 , wherein
 Z 13  or Z 16  in the formula (3) is a carbon atom to be bonded to L 1  by a single bond. 
 
     
     
       7. The organic electroluminescence device according to  claim 1 , wherein
 Z 11  or Z 18  in the formula (3) is a carbon atom to be bonded to L 1  by a single bond.   
     
     
       8. The organic electroluminescence device according to  claim 1 , wherein
 m is 1 in the formula (2), and 
 L 1  in the formula (2) is a linking group and L 1  as the linking group is a substituted or unsubstituted divalent aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted divalent heterocyclic group having 5 to 30 ring atoms. 
 
     
     
       9. The organic electroluminescence device according to  claim 1 , wherein
 two or three of X 1  to X 3  are nitrogen atoms in the formula (1).   
     
     
       10. The organic electroluminescence device according to  claim 1 , wherein
 in the formula (2), L 1  is a divalent or trivalent linking group derived from one of benzene, biphenyl, terphenyl, naphthalene and phenanthrene.   
     
     
       11. An electronic device comprising the organic electroluminescence device according to  claim 1 . 
     
     
       12. An organic electroluminescence device, comprising:
 a cathode;   an anode; and   an organic layer having one or more layers and provided between the anode and the cathode, wherein   the organic layer comprises an emitting layer,   the emitting layer comprises a first host material, a second host material, and a phosphorescent dopant material,   the first host material is a compound represented by a formula (1) below, and   the second host material is a compound represented by a formula (30) below,   
       
         
           
           
               
               
           
         
       
       where:
 X 1  to X 3  each are a nitrogen atom or CR 1  with a proviso that at least one of X 1  to X 3  is a nitrogen atom; 
 R 1  independently represents a hydrogen atom, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkenyl group having 2 to 30 carbon atoms, a substituted or unsubstituted alkynyl group having 2 to 30 carbon atoms, a substituted or unsubstituted alkylsilyl group having 3 to 30 carbon atoms, a substituted or unsubstituted arylsilyl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 30 carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 30 ring carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 ring carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms; 
 A is represented by a formula (2) below; 
 Ar 11  and Ar 12  are each independently represented by the formula (2), or a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 30 ring atoms,
   (HAr 1 ) m L 1 -   (2)
 
 
 
       where:
 HAr 1  is represented by a formula (3) below; 
 m is 1 or 2; 
 when m is 1, L 1  is a single bond or a divalent linking group; 
 when m is 2, L 1  is a trivalent linking group and HAr 1  are the same or different; 
 the linking group in L 1  is a substituted or unsubstituted divalent or trivalent aromatic hydrocarbon group having 6 to 30 ring carbon atoms, a substituted or unsubstituted divalent or trivalent heterocyclic group having 5 to 30 ring atoms, or a divalent or trivalent multiple linking group provided by bonding two or three groups selected from the aromatic hydrocarbon group and the heterocyclic group; and 
 in the multiple linking group, the aromatic hydrocarbon group and the heterocyclic group forming the multiple linking group are mutually the same or different and are optionally mutually bonded to form a ring, 
 
       
         
           
           
               
               
           
         
       
       where:
 Z 11  to Z 18  each independently represent a nitrogen atom, CR 11  or a carbon atom to be bonded to L 1  by a single bond; 
 Y 1  represents an oxygen atom, a sulfur atom, SiR 12 R 13  or a silicon atom to be bonded to L 1  by a single bond; 
 one of the carbon atom at Z 11  to Z 18  and R 11  to R 13  and the silicon atom at Y 1  is bonded to L 1 ; 
 R 11 , R 12  and R 13  represent the same as R 1  of the formula (1); 
 a plurality of R 11  are mutually the same or different; 
 adjacent ones of R 11  are optionally bonded to each other to form a ring; 
 R 12  and R 13  are mutually the same or different; and 
 R 12  and R 13  are optionally bonded to each other to form a ring, 
 
       
         
           
           
               
               
           
         
       
       where:
 Ar 230  is a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms; 
 Y 3  is selected from an oxygen atom, a sulfur atom, NR 230  and a nitrogen atom to be bonded to L 3  by a single bond; 
 L 3  is a single bond or a linking group and the linking group is a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms; 
 L 3  is optionally bonded to a carbon atom of the group including Y 3 , or is optionally bonded to Y 3  when Y 3  is a nitrogen atom; 
 w is 1 or 2; 
 when w is 1, two Ar 230  are mutually the same or different; 
 when w is 2, structures represented by a formula (30-1) below are mutually the same or different; 
 R 230  to R 232  each independently represent the same as R 1  of the formula (1); 
 u3 and u4 are each independently an integer of 3 to 4; 
 a plurality of R 231  are mutually the same or different; 
 adjacent ones of R 231  are optionally bonded to each other to form a ring; 
 R 232  are mutually the same or different; and 
 adjacent ones of R 232  are optionally bonded to each other to form a ring, 
 
       
         
           
           
               
               
           
         
         Y 3 , L 3 , R 231 , R 232 , u3 and u4 respectively represent the same as Y 3 , L 3 , R 231 , R 232 , u3 and u4 of the formula (30). 
       
     
     
       13. The organic electroluminescence device according to  claim 1 , wherein
 the phosphorescent dopant material is an ortho-metalated complex of a metal atom selected from iridium (Ir), osmium (Os) and platinum (Pt). 
 
     
     
       14. The organic electroluminescence device according to  claim 12 , wherein
 the phosphorescent dopant material is an ortho-metalated complex of a metal atom selected from iridium (Ir), osmium (Os) and platinum (Pt).   
     
     
       15. An electronic device comprising the organic electroluminescence device according to  claim 12 . 
     
     
       16. The organic electroluminescence device according to  claim 12 , wherein
 the second host material is a compound represented by any one of formulae (30-A) to (30-D)   
       
         
           
           
               
               
           
         
         where: 
         Ar 230 , L 3 , w and R 230  respectively represent the same as Ar 230 , L 3 , w and R 230  of the formula (30); 
         R 233  and R 234  respectively represent the same as R 231  and R 232  of the formula (30); and 
         u5 is 3 and u6 is 4. 
       
     
     
       17. The organic electroluminescence device according to  claim 12 , wherein
 Ar 230  is a phenyl group, biphenyl group or terphenyl group.   
     
     
       18. The organic electroluminescence device according to  claim 12 , wherein
 L 3  is a phenyl group, biphenyl group or terphenyl group.   
     
     
       19. The organic electroluminescence device according to  claim 12 , wherein
 Ar 230  is a phenyl group, biphenyl group or terphenyl group, and   L 3  is phenyl group, biphenyl group of terphenyl group.   
     
     
       20. The organic electroluminescence device according to claim 1, wherein:
 X 1 , X 2 , and X 3  are nitrogen atoms; and   L 1  is a single bond.    
     
     
       21. The organic electroluminescence device according to claim 1, wherein
 in Z 11  to Z 18 , at least one of R 11  is a substituted or unsubstituted carbazolyl group.    
     
     
       22. The organic electroluminescence device according to claim 20, wherein
 in Z 11  to Z 18 , at least one of R 11  s a substituted or unsubstituted carbazolyl group.    
     
     
       23. The organic electroluminescence device according to claim 20, wherein
 Z 14  or Z 15  in the formula (3) is a carbon atom bonded to L 1  by a single bond.    
     
     
       24. The organic electroluminescence device according to claim 21, wherein
 Z 14  or Z 15  in the formula (3) is a carbon atom bonded to L 1  by a single bond.    
     
     
       25. The organic electroluminescence device according to claim 22, wherein
 Z 14  or Z 15  in the formula (3) is a carbon atom bonded to L 1  by a single bond.    
     
     
       26. The organic electroluminescence device according to claim 20, wherein
 Z 13  or Z 16  represents CR 11 , wherein R 11  is a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted furyl group, a substituted or unsubstituted thienyl group, a substituted or unsubstituted oxazolyl group, a substituted or unsubstituted thiazolyl group, a substituted or unsubstituted isoxazolyl group, a substituted or unsubstituted isothiazolyl group, a substituted or unsubstituted oxadiazolyl group, a substituted or unsubstituted thiadiazolyl group, a substituted or unsubstituted benzofuranyl group, a substituted or unsubstituted benzothiophenyl group, a substituted or unsubstituted benzoxazolyl group, a substituted or unsubstituted benzothiazolyl group, a substituted or unsubstituted benzisoxazolyl group, a substituted or unsubstituted benzisothiazolyl group, a substituted or unsubstituted benzoxadiazolyl group, a substituted or unsubstituted benzothiadiazolyl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, a substituted or unsubstituted piperidinyl group, a substituted or unsubstituted pyrrolidinyl group, a substituted or unsubstituted piperazinyl group, a substituted or unsubstituted morpholyl group, a substituted or unsubstituted phenazinyl group, a substituted or unsubstituted phenothiazinyl group, or a substituted or unsubstituted phenoxazinyl group.    
     
     
       27. The organic electroluminescence device according to claim 26, wherein
 Z 13  or Z 16  represents CR 11 , wherein R 11  is a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted furyl group, a substituted or unsubstituted thienyl group, a substituted or unsubstituted oxazolyl group, a substituted or unsubstituted thiazolyl group, a substituted or unsubstituted isoxazolyl group, a substituted or unsubstituted isothiazolyl group, a substituted or unsubstituted oxadiazolyl group, a substituted or unsubstituted thiadiazolyl group, a substituted or unsubstituted benzofuranyl group, a substituted or unsubstituted benzothiophenyl group, a substituted or unsubstituted benzoxazolyl group, a substituted or unsubstituted benzothiazolyl group, a substituted or unsubstituted benzisoxazolyl group, a substituted or unsubstituted benzisothiazolyl group, a substituted or unsubstituted benzoxadiazolyl group, a substituted or unsubstituted benzothiadiazolyl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted dibenzothiophenyl group, a substituted or unsubstituted piperidinyl group, a substituted or unsubstituted pyrrolidinyl group, a substituted or unsubstituted piperazinyl group, a substituted or unsubstituted morpholyl group, a substituted or unsubstituted phenazinyl group, a substituted or unsubstituted phenothiazinyl group, or a substituted or unsubstituted phenoxazinyl group.    
     
     
       28. The organic electroluminescence device according to claim 20, wherein
 the organic layer comprises an intermediate layer and a plurality of emitting units layered through the intermediate layer, and   at least one of the plurality of emitting units comprises the emitting layer.    
     
     
       29. The organic electroluminescence device according to claim 1, wherein
 in the formula (2), L 1  is a single bond, phenylene, or biphenyldiyl.    
     
     
       30. The organic electroluminescence device according to claim 1, wherein
 one of Ar 11  and Ar 12  is represented by the formula (2).    
     
     
       31. The organic electroluminescence device according to claim 1, wherein:
 Ar 11  is an aromatic hydrocarbon group having 6 to 30 ring carbon atoms substituted by a heterocyclic group; and   Ar 12  is represented by the formula (2).    
     
     
       32. The organic electroluminescence device according to claim 1, wherein, in the formula (3), Z 12  or Z 17  is a carbon atom bonded to L 1  by a single bond.  
     
     
       33. The organic electroluminescence device according to claim 1, wherein, in the formula (3), R 11  is a hydrogen atom.  
     
     
       34. The organic electroluminescence device according to claim 1, wherein one of Ar 11  and Ar 12  is a phenyl group, biphenyl group, or terphenyl group.  
     
     
       35. The organic electroluminescence device according to claim 1, wherein
 the second host material is a compound represented by the formula (7), and   in the formula (3), Z 12  or Z 17  is a carbon atom bonded to L 1  by a single bond.    
     
     
       36. The organic electroluminescence device according to claim 1, wherein
 the second host material is a compound represented by the formula (7),   X 1 , X 2  and X 3  are each a nitrogen atom,   L 1  is a single bond and   Z 14  or Z 15  in the formula (3) is a carbon atom bonded to L 1  by a single bond.    
     
     
       37. An organic electroluminescence device, comprising:
 a cathode;   an anode; and   an organic layer having one or more layers and provided between the anode and the cathode, wherein   the organic layer comprises an emitting layer,   the emitting layer comprises a first host material, a second host material, and a phosphorescent dopant material,   wherein   the first host material is represented by one of the following formulae H1 and H13;   
       
         
           
           
               
               
           
         
         the second host material is represented by one of the following formulae H5, H6, H7 and H8; 
       
       
         
           
           
               
               
           
         
        
       
     
     
       38. The organic electroluminescence device according to claim 1, wherein the first host material is a compound represented by the following formula: 
       
         
           
           
               
               
           
         
        
       
     
     
       39. The organic electroluminescence device according to claim 1, wherein Ar 11  is an unsubstituted phenyl group, Ar 12  is an aromatic hydrocarbon group having 6 to 30 ring carbon atoms substituted by a heterocyclic group, and R 11  is a hydrogen atom, a substituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or an unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms.  
     
     
       40. The organic electroluminescence device according to claim 39, wherein one of Z 12  and Z 17  is a carbon atom bonded to L 1  by a single bond and the other of Z 12  and Z 17  is CR 11 , and wherein Z 13  to Z 16  are CR 11 .  
     
     
       41. The organic electroluminescence device according to claim 1, wherein one of Z 12  and Z 17  is a carbon atom bonded to L 1  by a single bond and the other of Z 12  and Z 17  is CR 11 , and wherein Z 13  to Z 16  are CR 11 . 
     
     
       42. The organic electroluminescence device according to claim 1, wherein Z 13 , Z 14 , Z 15  or Z 16  in the formula (3) is a carbon atom to be bonded to L 1  by a single bond.