Chrysenes for deep blue luminescent applications

Abstract

This disclosure relates to chrysene compounds with deep blue emission that are useful in electroluminescent applications. It also relates to electronic devices in which the active layer includes such a chrysene compound.

1 - 18 . (canceled) 
     
     
         19 . A compound having Formula I: 
       
         
           
           
               
               
           
         
         wherein:
 Ar 1  and Ar 3  are the same or different and are aryl, and at least one of Ar 1  and Ar 3  has at least one electron-withdrawing substituent; 
 Ar 2  and Ar 4  are the same or different and are aryl; 
 R 1 , R 2 , R 5  and R 7  through R 11  are H; 
 R 3  is an electron-withdrawing group; 
 R 4  is selected from the group consisting of H and an electron-withdrawing group; 
 
         wherein the electron-withdrawing group is selected from the group consisting of fluoro, perfluoroalkyl, perfluoroaryl, nitro, —SO 2 R, where R is alkyl or perfluoroalkyl, and combinations thereof; 
         and wherein said compound is capable of emitting deep blue light. 
       
     
     
         20 . The compound of  claim 19 , wherein both Ar 1  and Ar 3  have at least one electron-withdrawing substituent. 
     
     
         21 . The compound of  claim 20 , wherein both Ar 1  and Ar 3  have two or more electron-withdrawing substituents. 
     
     
         22 . The compound of  claim 19 , wherein Ar 1  and Ar 3  are phenyl. 
     
     
         23 . The compound of  claim 19 , wherein Ar 2  and Ar 4  are selected from the group consisting of phenyl, biphenyl, naphthyl, and binaphthyl. 
     
     
         24 . The compound of  claim 23 , wherein Ar 2  and Ar 4  are biphenyl. 
     
     
         25 . The compound of  claim 19 , wherein at least one of Ar 2  and Ar 4  has at least one alkyl substituent. 
     
     
         26 . The compound of  claim 19 , in which R 3  is fluorine. 
     
     
         27 . The compound of  claim 26 , in which the compound is E1 or E2: 
       
         
           
           
               
               
           
         
       
     
     
         28 . An organic electronic device comprising a first electrical contact layer, a second electrical contact layer, and at least one active layer therebetween, wherein the active layer comprises Compound E-2: