Novel styryl compound and organic electroluminescence device

Abstract

Novel styryl compounds represented by the following general formulae (1) and (2): wherein R 1 to R 10 each independently represent hydrogen atom, an alkyl group, an alkoxyl group, an aryl group, an aryloxyl group, a condensed polycyclic group, a heterocyclic group, amino group, an alkylamino group, an arylamino group, cyano group, nitro group, hydroxyl group or a halogen atom, adjacent groups among groups represented by R 1 to R 10 may be bonded to each other and form a saturated or unsaturated carbon ring, and A, B, C, D, A′, B′, C′ and D′ each independently represent a substituted or unsubstituted alkyl group or aryl group having a specific structure; and an organic electroluminescence device comprising a film of organic compounds comprising at least a light emitting layer, wherein at least one of the layers of the film of organic compounds comprises the novel styryl compound. The organic electroluminescence device has excellent heat resistance, a high efficiently of light emission and a long life and emits blue light of a high purity. The novel styryl compounds provide the advantageous properties to the organic electroluminescence device.

1 . A styryl compound represented by the following general formula (1):  
     
       
         
         
             
             
         
       
     
     wherein R 1  to R 10  each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkoxyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, a substituted or unsubstituted aryloxyl group having 6 to 18 carbon atoms, a substituted or unsubstituted condensed polycyclic group having 6 to 30 carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 carbon atoms, an amino group, an alkylamino group having 2 to 30 carbon atoms, an arylamino group having 6 to 30 carbon atoms, a cyano group, a nitro group, an hydroxyl group or a halogen atom, and adjacent groups among groups represented by R 3  to R 10  may be bonded to each other and form a saturated or unsaturated carbon ring and the groups represented by R 1  and R 2  are not bonded together to each other; and 
 A, B, C and D each independently represent a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a substituted or unsubstituted aryl group having 6 to 40 carbon atoms, and at least two of A, B, C and D each represent a group represented by —Ar 1 -Ar 2 , Ar 1  representing a substituted or unsubstituted phenylene group or naphthalene group and Ar 2  representing a substituted or unsubstituted aryl group having 6 to 34 carbon atoms, excluding a case in which A and C represent biphenyl group and B and D represent phenyl group and a case in which at least one of A, B, C, and D represents pyrene.  
 
   
   
       2 . A styryl compound represented by the following general formula (2):  
     
       
         
         
             
             
         
       
     
     wherein R 1  to R 10  each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted alkoxyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, a substituted or unsubstituted aryloxyl group having 6 to 18 carbon atoms, a substituted or unsubstituted condensed polycyclic group having 6 to 30 carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 30 carbon atoms, an amino group, an alkylamino group having 2 to 30 carbon atoms, an arylamino group having 6 to 30 carbon atoms, a cyano group, a nitro group, an hydroxyl group or a halogen atom, and adjacent groups among groups represented by R 3  to R 10  may be bonded to each other and form a saturated or unsaturated carbon ring and the groups represented by R 1  and R 2  are not bonded together to each other; and 
 A′, B′, C′ and D′ each independently represent a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms or a substituted or unsubstituted aryl group having 6 to 40 carbon atoms, and A′ and C′ additionally each represent a substituted or unsubstituted condensed hydrocarbon group having 2 to 5 rings excluding a case in which at least one of A′, B′ C′, and D′ represents pyrene.  
 
   
   
       3 - 10 . (canceled)