Organic electroluminescence device

Abstract

An organic electroluminescence device which exhibits an excellent purity of color and a high efficiency of light emission, has a long life and emits reddish light and a novel compound having these characteristics are provided. The organic electroluminescence device comprises an organic layer disposed between at least one pair of electrodes, wherein the organic layer comprises a compound having a fluoranthene skeleton structure substituted at least with an amine group or an alkenyl group.

1 . An organic electroluminescence device which comprises an organic layer disposed between at least one pair of electrodes, wherein the organic layer comprises a compound represented by the following formula [15] as a dopant, said organic layer being a light emitting layer:  
     
       
         
         
             
             
         
       
       wherein X 1  to X 10  each independently represents hydrogen atom, a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms, a linear, branched or cyclic alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 carbon groups, a substituted or unsubstituted arylamino group having 6 to 30 carbon atoms, a substituted or unsubstituted alkylamino group having 1 to 30 carbon atoms, a substituted or unsubstituted arylalkylamino group having 7 to 30 carbon atoms or a substituted or unsubstituted alkenyl group having 8 to 30 carbon atoms; a pair of adjacent groups represented by X 1  to X 10  and a pair of adjacent substituents to groups represented by X 1  to X 10  may form a cyclic structure in combination; when a pair of adjacent substituents are aryl groups, the pair of substituents may be a single group; and at least one of substituents represented by X 1  to X 10  comprises an amine group or an alkenyl group.  
     
   
   
       2 . The organic electroluminescence device according to  claim 1 , wherein the organic layer comprises 1 to 70% by weight of said compound.  
   
   
       3 . The organic electroluminescence device according to  claim 1 , wherein a layer of an inorganic compound is disposed between the organic layer and any of the electrodes.  
   
   
       4 . The organic electroluminescence device according to  claim 2 , wherein a layer of an inorganic compound is disposed between the organic layer and any of the electrodes.  
   
   
       5 . The organic electroluminescence device according to  claim 1 , which emits reddish light.  
   
   
       6 . The organic electroluminescence device according to  claim 1 , wherein the organic layer comprises said compound and isomers thereof.  
   
   
       7 . The organic electroluminescence device according to  claim 6 , wherein, among said compound and the isomers thereof, a ratio of an amount by mole of an isomer which can emit light having a longer wavelength to an amount by mole of an isomer which can emit light having a shorter wavelength is in a range of 90:10 to 60:40.  
   
   
       8 . The organic electroluminescence device according to  claim 1 , wherein said organic layer further contains at least host material selected from the group consisting of derivatives of anthracene, naphthalene, phenanthrene, pyrene, tetracene, chrysene, perylene, and stilbene.