Material for organic electroluminescence device and organic electroluminescence device using the same

Abstract

Provided are an organic electroluminescence device, which: shows high luminous efficiency; is free of any pixel defect; and has a long lifetime, and a material for an organic electroluminescence device for realizing the device. The material for an organic electroluminescence device is a compound of a specific structure having a π-conjugated heteroacene skeleton crosslinked with a carbon atom, nitrogen atom, or oxygen atom. The organic electroluminescence device has one or more organic thin film layers including a light emitting layer between a cathode and an anode, and at least one layer of the organic thin film layers contains the material for an organic electroluminescence device.

1 . A material for an organic electroluminescence device represented by one of the following general formulae (1) and (2): 
       
         
           
           
               
               
           
         
         where:
 X 1  and X 2  each independently represent O, N—R 1 , or CR 2 R 3 , provided that a case where both X 1  and X 2  represent CR 2 R 3  is excluded; 
 R 1 , R 2 , and R 3  each independently represent an alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, an aralkyl group having 7 to 24 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group having a ring formed of 3 to 24 atoms, provided that, when both X 1  and X 2  represent N—R 1 , at least one R 1  represents a substituted or unsubstituted, monovalent fused aromatic heterocyclic group having a ring formed of 8 to 24 atoms; 
 n represents 2, 3, or 4, and the material represented by the formula (2) comprises a dimer using L 3  as a linking group for n=2, a trimer using L 3  as a linking group for n=3, or a tetramer using L 3  as a linking group for n=4; 
 L 1  represents a single bond, an alkyl or alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl or cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a monovalent or divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, monovalent or divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, monovalent or divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with a benzene ring a through a carbon-carbon bond; 
 L 2  represents a single bond, an alkyl or alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl or cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a monovalent or divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, monovalent or divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, monovalent or divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with a benzene ring c through a carbon-carbon bond; 
 when n represents 2, L 3  represents a single bond, an alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond, when n represents 3, L 3  represents a trivalent alkane having 1 to 20 carbon atoms, a substituted or unsubstituted, trivalent cycloalkane having a ring formed of 3 to 20 carbon atoms, a trivalent silyl group having 1 to 20 carbon atoms, a substituted or unsubstituted, trivalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, trivalent aromatic heterocyclic group which has 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond, or when n represents 4, L 3  represents a tetravalent alkane having 1 to 20 carbon atoms, a substituted or unsubstituted, tetravalent cycloalkane having a ring formed of 3 to 20 carbon atoms, a silicon atom, a substituted or unsubstituted, tetravalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, tetravalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond; 
 A 1  represents a hydrogen atom, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 1  through a carbon-carbon bond, provided that, when L 1  represents an alkyl or alkylene group having 1 to 20 carbon atoms, a case where A 1  represents a hydrogen atom is excluded; 
 A 2  represents a hydrogen atom, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 2  through a carbon-carbon bond, provided that, when L 2  represents an alkyl or alkylene group having 1 to 20 carbon atoms, a case where A 2  represents a hydrogen atom is excluded, and, when X 1  and X 2  each represent O or CR 2 R 3  and both L 1  and L 2  represent single bonds, a case where A 1  and A 2  simultaneously represent hydrogen atoms is excluded; 
 Y 1 , Y 2 , and Y 3  each represent an alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aralkyl group having 7 to 24 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring a, b, or c through a carbon-carbon bond, a number of each of Y 1  and Y 3  is 0, 1, 2, or 3, and a number of Y 2  is 0, 1, or 2; and 
 A 1 , A 2 , L 1 , L 2 , and L 3  are each free of any carbonyl group. 
 
       
     
     
         2 . The material for an organic electroluminescence device according to  claim 1 , wherein the material for an organic electroluminescence device is represented by any one of the following general formulae (3) to (10): 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         where:
 R 1 , R 2 , and R 3  each independently represent an alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, an aralkyl group having 7 to 24 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group having a ring formed of 3 to 24 atoms, provided that at least one R 1  in each of the formulae (3) and (7) represents a substituted or unsubstituted, monovalent fused aromatic heterocyclic group having a ring formed of 8 to 24 atoms; 
 n represents 2, 3, or 4, and the material represented by any one of the formulae (7) to (10) comprises a dimer using L 3  as a linking group for n=2, a trimer using L 3  as a linking group for n=3, or a tetramer using L 3  as a linking group for n=4; 
 L 1  represents a single bond, an alkyl or alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl or cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a monovalent or divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, monovalent or divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, monovalent or divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring a through a carbon-carbon bond; 
 L 2  represents a single bond, an alkyl or alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl or cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a monovalent or divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, monovalent or divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, monovalent or divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond; 
 when n represents 2, L 3  represents a single bond, an alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond, when n represents 3, L 3  represents a trivalent alkane having 1 to 20 carbon atoms, a substituted or unsubstituted, trivalent cycloalkane having a ring formed of 3 to 20 carbon atoms, a trivalent silyl group having 1 to 20 carbon atoms, a substituted or unsubstituted, trivalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, trivalent aromatic heterocyclic group which has 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond, or when n represents 4, L 3  represents a tetravalent alkane having 1 to 20 carbon atoms, a substituted or unsubstituted, tetravalent cycloalkane having a ring formed of 3 to 20 carbon atoms, a silicon atom, a substituted or unsubstituted, tetravalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, tetravalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond; 
 A 1  represents a hydrogen atom, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 1  through a carbon-carbon bond, provided that, when L 1  represents an alkyl or alkylene group having 1 to 20 carbon atoms, a case where A 1  represents a hydrogen atom is excluded; 
 A 2  represents a hydrogen atom, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 2  through a carbon-carbon bond, provided that, when L 2  represents an alkyl or alkylene group having 1 to 20 carbon atoms, a case where A 2  represents a hydrogen atom is excluded, and, when both L 1  and L 2  represent single bonds, a case where A 1  and A 2  simultaneously represent hydrogen atoms is excluded; 
 Y 1 , Y 2 , and Y 3  each represent an alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aralkyl group having 7 to 24 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring a, b, or c through a carbon-carbon bond, a number of each of Y 1  and Y 3  is 0, 1, 2, or 3, and a number of Y 2  is 0, 1, or 2; and 
 A 1 , A 2 , L 1 , L 2 , and L 3  are each free of any carbonyl group. 
 
       
     
     
         3 . The material for an organic electroluminescence device according to  claim 1 , wherein the material for an organic electroluminescence device is represented by one of the following general formulae (11) and (12): 
       
         
           
           
               
               
           
         
         where:
 n represents 2, 3, or 4, and the material represented by the formula (12) comprises a dimer using L 3  as a linking group for n=2, a trimer using L 3  as a linking group for n=3, or a tetramer using L 3  as a linking group for n=4; 
 L 1  represents a single bond, an alkyl or alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl or cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a monovalent or divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, monovalent or divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, monovalent or divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring a through a carbon-carbon bond; 
 L 2  represents a single bond, an alkyl or alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl or cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a monovalent or divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, monovalent or divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, monovalent or divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond; 
 when n represents 2, L 3  represents a single bond, an alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond, when n represents 3, L 3  represents a trivalent alkane having 1 to 20 carbon atoms, a substituted or unsubstituted, trivalent cycloalkane having a ring formed of 3 to 20 carbon atoms, a trivalent silyl group having 1 to 20 carbon atoms, a substituted or unsubstituted, trivalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, trivalent aromatic heterocyclic group which has 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond, or when n represents 4, L 3  represents a tetravalent alkane having 1 to 20 carbon atoms, a substituted or unsubstituted, tetravalent cycloalkane having a ring formed of 3 to 20 carbon atoms, a silicon atom, a substituted or unsubstituted, tetravalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, tetravalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond; 
 A 1  represents a hydrogen atom, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 1  through a carbon-carbon bond, provided that, when L 1  represents an alkyl or alkylene group having 1 to 20 carbon atoms, a case where A 1  represents a hydrogen atom is excluded; 
 A 2  represents a hydrogen atom, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 2  through a carbon-carbon bond, provided that, when L 2  represents an alkyl or alkylene group having 1 to 20 carbon atoms, a case where A 2  represents a hydrogen atom is excluded, and, when both L 1  and L 2  represent single bonds, a case where A 1  and A 2  simultaneously represent hydrogen atoms is excluded; 
 Y 1 , Y 2 , and Y 3  each represent an alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aralkyl group having 7 to 24 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring a, b, or c through a carbon-carbon bond, a number of each of Y 1  and Y 3  is 0, 1, 2, or 3, and a number of Y 2  is 0, 1, or 2; and 
 A 1 , A 2 , L 1 , L 2 , and L 3  are each free of any carbonyl group. 
 
       
     
     
         4 . The material for an organic electroluminescence device according to  claim 3 , wherein A 1  in each of the general formulae (11) and (12) represents a silyl group having 3 to 20 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 1  through a carbon-carbon bond. 
     
     
         5 . The material for an organic electroluminescence device according to  claim 3 , wherein A 1  in each of the general formulae (11) and (12) represents an aromatic heterocyclic group which is linked with L 1  through a carbon-carbon bond and which is selected from pyridazine, pyrimidine, pyrazine, 1,3,5-triazine, carbazole, dibenzofuran, dibenzothiophene, phenoxazine, phenothiazine, and dihydroacridine. 
     
     
         6 . The material for an organic electroluminescence device according to  claim 1 , wherein the material is represented by one of the following general formulae (13) and (14): 
       
         
           
           
               
               
           
         
         where:
 n represents 2, 3, or 4, and the material represented by the formula (14) comprises a dimer using L 3  as a linking group for n=2, a trimer using L 3  as a linking group for n=3, or a tetramer using L 3  as a linking group for n=4; 
 L 1  represents a single bond, an alkyl or alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl or cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a monovalent or divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, monovalent or divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, monovalent or divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring a through a carbon-carbon bond; 
 L 2  represents a single bond, an alkyl or alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl or cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a monovalent or divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, monovalent or divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, monovalent or divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond; 
 when n represents 2, L 3  represents a single bond, an alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond, when n represents 3, L 3  represents a trivalent alkane having 1 to 20 carbon atoms, a substituted or unsubstituted, trivalent cycloalkane having a ring formed of 3 to 20 carbon atoms, a trivalent silyl group having 1 to 20 carbon atoms, a substituted or unsubstituted, trivalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, trivalent aromatic heterocyclic group which has 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond, or when n represents 4, L 3  represents a tetravalent alkane having 1 to 20 carbon atoms, a substituted or unsubstituted, tetravalent cycloalkane having a ring formed of 3 to 20 carbon atoms, a silicon atom, a substituted or unsubstituted, tetravalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, tetravalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond; 
 A 1  represents a hydrogen atom, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 1  through a carbon-carbon bond, provided that, when L 1  represents an alkyl or alkylene group having 1 to 20 carbon atoms, a case where A 1  represents a hydrogen atom is excluded; 
 A 2  represents a hydrogen atom, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 2  through a carbon-carbon bond, provided that, when L 2  represents an alkyl or alkylene group having 1 to 20 carbon atoms, a case where A 2  represents a hydrogen atom is excluded, and, when both L 1  and L 2  represent a single bond, a case where A 1  and A 2  simultaneously represent hydrogen atoms is excluded; 
 Y 1 , Y 2 , and Y 3  each represent an alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aralkyl group having 7 to 24 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring a, b, or c through a carbon-carbon bond, a number of each of Y 1  and Y 3  is 0, 1, 2, or 3, and a number of Y 2  is 0, 1, or 2; and 
 A 1 , A 2 , L 1 , L 2 , and L 3  are each free of any carbonyl group. 
 
       
     
     
         7 . The material for an organic electroluminescence device according to  claim 6 , wherein A 1  in each of the general formulae (13) and (14) represents a silyl group having 3 to 20 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 1  through a carbon-carbon bond. 
     
     
         8 . The material for an organic electroluminescence device according to  claim 6 , wherein A 1  in each of the general formulae (13) and (14) represents an aromatic heterocyclic group which is linked with L 1  through a carbon-carbon bond and which is selected from pyridazine, pyrimidine, pyrazine, 1,3,5-triazine, carbazole, dibenzofuran, dibenzothiophene, phenoxazine, phenothiazine, and dihydroacridine. 
     
     
         9 . An organic electroluminescence device comprising one or more organic thin film layers including a light emitting layer between a cathode and an anode, wherein at least one layer of the organic thin film layers contains the material for an organic electroluminescence device according to  claim 1 . 
     
     
         10 . The organic electroluminescence device according to  claim 9 , wherein the light emitting layer contains the material for an organic electroluminescence device as a host material. 
     
     
         11 . The organic electroluminescence device according to  claim 9 , wherein the light emitting layer further contains a phosphorescent material. 
     
     
         12 . The organic electroluminescence device according to  claim 9 , wherein the light emitting layer contains a host material and a phosphorescent material, and the phosphorescent material comprises an orthometalated complex of an iridium (Ir), osmium (Os), or platinum (Pt) metal. 
     
     
         13 . The organic electroluminescence device according to  claim 9 , further comprising an electron injecting layer between the light emitting layer and the cathode, wherein the electron injecting layer contains a nitrogen-containing ring derivative. 
     
     
         14 . The organic electroluminescence device according to  claim 9 , further comprising an electron transporting layer between the light emitting layer and the cathode, wherein the electron transporting layer contains the material for an organic electroluminescence device. 
     
     
         15 . The organic electroluminescence device according to  claim 14 , wherein the light emitting layer contains, as a host material, a material for an organic electroluminescence device serving as a compound having a π-conjugated heteroacene skeleton crosslinked with a carbon atom, nitrogen atom, oxygen atom, or sulfur atom. 
     
     
         16 . The organic electroluminescence device according to  claim 14 , wherein the light emitting layer contains a material for an organic electroluminescence device represented by any one of the following general formulae (15) to (18) as a host material: 
       
         
           
           
               
               
           
         
         where:
 X 3 , X 4 , X 5 , and X 6  each independently represent O, S, N—R 1 , or CR 2 R 3 ; 
 R 1 , R 2 , and R 3  each independently represent an alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, an aralkyl group having 7 to 24 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group having a ring formed of 3 to 24 atoms, provided that, when both X 3  and X 4 , or both X 5  and X 6 , represent N—R 1 , at least one R 1  represents a substituted or unsubstituted, monovalent fused aromatic heterocyclic group having a ring formed of 8 to 24 atoms; 
 n represents 2, 3, or 4, and the material represented by one of the formulae (16) and (18) comprises a dimer using L 3  as a linking group for n=2, a trimer using L 3  as a linking group for n=3, or a tetramer using L 3  as a linking group for n=4; 
 L 1  represents a single bond, an alkyl or alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl or cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a monovalent or divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, monovalent or divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, monovalent or divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with a benzene ring a through a carbon-carbon bond; 
 L 2  represents a single bond, an alkyl or alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl or cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a monovalent or divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, monovalent or divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, monovalent or divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with a benzene ring c through a carbon-carbon bond, provided that, when both X 7  and X 8 , both X 9  and X 10 , or both X 11  and X 12 , represent CR 2 R 3  and both L 1  and L 2  represent substituted or unsubstituted, monovalent or divalent aromatic hydrocarbon groups having a ring formed of 6 to 24 carbon atoms, a case where L 1  and L 2  are simultaneously linked at para positions with respect to a benzene ring b is excluded; 
 when n represents 2, L 3  represents a single bond, an alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond, when n represents 3, L 3  represents a trivalent alkane having 1 to 20 carbon atoms, a substituted or unsubstituted, trivalent cycloalkane having a ring formed of 3 to 20 carbon atoms, a trivalent silyl group having 1 to 20 carbon atoms, a substituted or unsubstituted, trivalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, trivalent aromatic heterocyclic group which has 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond, or when n represents 4, L 3  represents a tetravalent alkane having 1 to 20 carbon atoms, a substituted or unsubstituted, tetravalent cycloalkane having a ring formed of 3 to 20 carbon atoms, a silicon atom, a substituted or unsubstituted, tetravalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, tetravalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond, provided that, when both X 7  and X 8 , both X 9  and X 10 , or both X 11  and X 12 , represent CR 2 R 3  and both L 1  and L 3  represent a substituted or unsubstituted, monovalent, divalent, trivalent, or tetravalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, a case where L 1  and L 3  are simultaneously linked at para positions with respect to the benzene ring b is excluded; 
 A 1  represents a hydrogen atom, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 1  through a carbon-carbon bond, provided that, when L 1  represents an alkyl or alkylene group having 1 to 20 carbon atoms, a case where A 1  represents a hydrogen atom is excluded; 
 A 2  represents a hydrogen atom, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 2  through a carbon-carbon bond, provided that, when L 2  represents an alkyl or alkylene group having 1 to 20 carbon atoms, a case where A 2  represents a hydrogen atom is excluded, and, when X 7  and X 8 , X 9  and X 10 , or X 11  and X 12 , each represent O, S, or CR 2 R 3  and both L 1  and L 2  represent single bonds, a case where A 1  and A 2  simultaneously represent hydrogen atoms is excluded; 
 Y 1 , Y 2 , and Y 3  each represent an alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aralkyl group having 7 to 24 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring a, b, or c through a carbon-carbon bond, a number of each of Y 1  and Y 3  is 0, 1, 2, or 3, and a number of Y 2  is 0, 1, or 2; and 
 A 1 , A 2 , L 1 , L 2 , and L 3  are each free of any carbonyl group. 
 
       
     
     
         17 . An organic electroluminescence device according to  claim 14 , wherein the light emitting layer contains a material for an organic electroluminescence device represented by any one of the following general formulae (19) to (22) as a host material: 
       
         
           
           
               
               
           
         
         where:
 n represents 2, 3, or 4, and the material represented by one of the formulae (20) and (22) comprises a dimer using L 3  as a linking group for n=2, a trimer using L 3  as a linking group for n=3, or a tetramer using L 3  as a linking group for n=4; 
 L 1  represents a single bond, an alkyl or alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl or cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a monovalent or divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, monovalent or divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, monovalent or divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with a benzene ring a through a carbon-carbon bond; 
 L 2  represents a single bond, an alkyl or alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl or cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a monovalent or divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, monovalent or divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, monovalent or divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with a benzene ring c through a carbon-carbon bond; 
 when n represents 2, L 3  represents a single bond, an alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having a ring formed of 3 to 20 carbon atoms, a divalent silyl group having 2 to 20 carbon atoms, a substituted or unsubstituted, divalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, divalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond, when n represents 3, L 3  represents a trivalent alkane having 1 to 20 carbon atoms, a substituted or unsubstituted, trivalent cycloalkane having a ring formed of 3 to 20 carbon atoms, a trivalent silyl group having 1 to 20 carbon atoms, a substituted or unsubstituted, trivalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, trivalent aromatic heterocyclic group which has 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond, or when n represents 4, L 3  represents a tetravalent alkane having 1 to 20 carbon atoms, a substituted or unsubstituted, tetravalent cycloalkane having a ring formed of 3 to 20 carbon atoms, a silicon atom, a substituted or unsubstituted, tetravalent aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted, tetravalent aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring c through a carbon-carbon bond; 
 A 1  represents a hydrogen atom, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 1  through a carbon-carbon bond, provided that, when L 1  represents an alkyl or alkylene group having 1 to 20 carbon atoms, a case where A 1  represents a hydrogen atom is excluded; 
 A 2  represents a hydrogen atom, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or an aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with L 2  through a carbon-carbon bond, provided that, when L 2  represents an alkyl or alkylene group having 1 to 20 carbon atoms, a case where A 2  represents a hydrogen atom is excluded, and, when both L 1  and L 2  represent single bonds, a case where A 1  and A 2  simultaneously represent hydrogen atoms is excluded; 
 Y 1 , Y 2 , and Y 3  each represent an alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having a ring formed of 3 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aralkyl group having 7 to 24 carbon atoms, a silyl group having 3 to 20 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group having a ring formed of 6 to 24 carbon atoms, or a substituted or unsubstituted aromatic heterocyclic group which has a ring formed of 3 to 24 atoms and which is linked with the benzene ring a, b, or c through a carbon-carbon bond, a number of each of Y 1  and Y 3  is 0, 1, 2, or 3, and a number of Y 2  is 0, 1, or 2; and 
 A 1 , A 2 , L 1 , L 2 , and L 3  are each free of any carbonyl group. 
 
       
     
     
         18 . The organic electroluminescence device according to  claim 9 , further comprising a hole transporting layer between the light emitting layer and the anode, wherein the hole transporting layer contains the material for an organic electroluminescence device. 
     
     
         19 . The organic electroluminescence device according to  claim 9 , further comprising a reducing dopant at an interfacial region between the cathode and the organic thin film layers.