| abstract |
There is provided a blue luminescent material having Formula I n n n n n n n n n n Ar1 and Ar2 are the same or different and each is an aryl group having at least two electron-withdrawing substituents. R 1 and R 2 are the same or different and can be alkyl, or aryl. R 3 , R 4 , R 5 and R 6 are the same or different and can be hydrogen, alkyl, or alkoxy. n is 0 or 1. |