Electroluminescent polymer having good carrier transport balance and electroluminescent device using the same

   
   

An electroluminescnet polymer is represented by the following formula (1): ##STR1## wherein X.sub.1 to X.sub.5 are independently a hydrogen atom, a linear alkyl or alkoxy group having 1 to 40 carbon atoms, a branched alkyl or alkoxy group having 3 to 40 carbon atoms, a cyclic alkyl group having 5 to 40 carbon atoms, a silyl group, or an aromatic group having 6 to 14 carbon atoms which is unsubstituted or substituted with at least one selected from the group consisting of an alkoxy group having 1 to 40 carbon atoms and an amine group.

 
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