Material for organic electroluminescent device and organic electroluminescent device using same

Abstract

The present invention provides an organic electroluminescent device material composed of an aromatic amine derivative having a specific structure in which amine moieties are linked to a chrysene moiety; and an organic electroluminescent device having a cathode, an anode, and one or more organic thin-film layers interposed between the cathode and the anode, the organic thin-layers including at least a light-emitting layer, wherein at least one of the organic thin-film layers contains the organic electroluminescent device material in the form of single component material or a mixture of a plurality of components. The organic electroluminescent device material and the organic electroluminescent device containing the material attains a long service life and can emit blue light of high color purity at high emission efficiency.

1 . An organic electroluminescent device material comprising an aromatic amine derivative represented by any of the following formulas (I) to (IV):  
     
       
         
         
             
             
         
       
     
     (wherein each of A 1  to A 12  represents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted aryl group having 5 to 50 ring carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted alkoxyl group having 1 to 50 carbon atoms, a substituted or unsubstituted aryloxy group having 5 to 50 ring carbon atoms, a substituted or unsubstituted arylamino group having 5 to 50 ring carbon atoms, a substituted or unsubstituted alkylamino group having 1 to 20 carbon atoms, or a halogen atom; m is an integer of 0 to 5, and when m is 2 or more, groups represented by any of A 1  to A 12  may be identical to or different from one another, or may be linked together to form a saturated or unsaturated ring; each pair of A 1  and A 2 , A 3  and A 4 , A 5  and A 6 , A 7  and A 8 , A 9  and A 10 , and A 11  and A 12  is such that the members thereof may be linked together to form a saturated or unsaturated ring; 
 with the proviso that in formula (I), at least one of A 1  to A 4  does not represent a hydrogen atom, that in formula (II), at least one of A 5  to A 8  does not represent a hydrogen atom; that in formula (III), at least one of A 9  and A 10  does not represent a hydrogen atom, and that in formula (IV), at least one of A 11  and A 12  does not represent a hydrogen atom;  
 each of R 1  to R 42  represents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 ring carbon atoms, or a cyano group; and  
 each of X 1  to X 3  represents a substituted or unsubstituted arylene group having 6 to 20 ring carbon atoms).  
 
   
   
       2 . An organic electroluminescent device material as described in  claim 1 , which is a light-emitting material for use in an organic electroluminescent device.  
   
   
       3 . An organic electroluminescent device comprising a cathode, an anode, and one or more organic thin-film layers interposed between the cathode and the anode, the organic thin-layers including at least a light-emitting layer, wherein at least one of the organic thin-film layers contains the organic electroluminescent device material as recited in  claim 1  in the form of single component material or a mixture of a plurality of components.  
   
   
       4 . An organic electroluminescent device comprising a cathode, an anode, and one or more organic thin-film layers interposed between the cathode and the anode, the organic thin-layers including at least a light-emitting layer, wherein the light-emitting layer contains the organic electroluminescent device material as recited in  claim 1  in an amount of 0.1 to 20 wt. %.  
   
   
       5 . An organic electroluminescent device as described in  claim 3 , which further includes a layer containing an aromatic tertiary amine derivative and/or a phthalocyanine derivative, the layer being provided between the light-emitting layer and the anode.  
   
   
       6 . An organic electroluminescent device as described in  claim 4 , which further includes a layer containing an aromatic tertiary amine derivative and/or a phthalocyanine derivative, the layer being provided between the light-emitting layer and the anode.  
   
   
       7 . An organic electroluminescent device as described in  claim 1 , which emits blue light.