Aromatic amine derivative and organic electroluminescence device employing the same

Abstract

A specified aromatic amine derivative having a chrysene structure. An organic electroluminescence device which comprises at least one organic thin film layer comprising a light emitting layer sandwiched between a pair of electrode consisting of an anode and a cathode, wherein at least one of the organic thin film layer comprises the aromatic amine derivative singly or as its mixture component. Organic electroluminescence devices having a long lifetime and a high efficiency of light emission, and aromatic amine derivatives capable of realizing such organic electroluminescence devices are provided.

1 . An aromatic amine derivative represented by the following general formula (2): 
     
       
         
         
             
             
         
       
     
     wherein A 5  to A 8  each independently represents 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 or a substituted or unsubstituted heterocyclic group having 3 to 50 ring carbon atoms; R 5  to R 8  each independently 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 aralkyl group having 6 to 50 ring carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 ring carbon atoms, a substituted or unsubstituted arylamino group having 5 to 20 ring carbon atoms, a substituted or unsubstituted alkylamino group having 1 to 20 carbon atoms or a substituted or unsubstituted heterocyclic group having 3 to 50 ring carbon atoms; and a couple of R 5  and R 6 , and a couple of R 7  and R 8  may bond each other to form a saturated or unsaturated ring. 
   
   
       2 . An organic electroluminescence device which comprises at least one organic thin film layer comprising a light emitting layer sandwiched between a pair of electrodes consisting of an anode and a cathode, wherein one or more of the at least one organic thin film layer comprises the aromatic amine derivative according to  claim 1  singly or in mixture. 
   
   
       3 . The organic electroluminescence device according to  claim 2 , wherein the light emitting layer comprises the aromatic amine derivative singly or in mixture. 
   
   
       4 . The organic electroluminescence device according to  claim 2 , wherein the light emitting layer comprises the aromatic amine derivative in an amount of 0.1 to 20% by weight. 
   
   
       5 . The organic electroluminescence device according to  claim 2 , wherein said device emits bluish light. 
   
   
       6 . A doping material comprising the aromatic amine derivative according to  claim 1 .