| abstract |
The electroluminescent device comprises an anode, a cathode, and a polymer luminescent material disposed between the anode and the cathode, wherein the polymer luminescent material having an arylamine residue has the formula:n n n n n n n n n n Wheren n n R 1 and R 2 are independently hydrogen; Alkyl groups having 1 to 24 carbon atoms; Aryl or substituted aryl having 6 to 40 carbon atoms; Heteroaryl or substituted heteroaryl having 4 to 40 carbon atoms; Or cyano group;n n n Ar 1 , Ar 2 , Ar 3 , Ar 4 and Ar are each independently aryl or substituted aryl having 6 to 40 carbon atoms; Heteroaryl or substituted heteroaryl having 4 to 40 carbons; Or a combination thereof. |