Abstract: Poly(N,N-dimethylaniline) (PDMA) is a novel soluble polyphenylene derivative,which is very easy to form delocalized and stable canon radicals in CHCl3. In this paper, wemainly studied the interaction between the cation radicals of PDMAand amines. It' Sfoundthat the interaction could lead to PDMA' S ESRspectra split, and the structures of aminesrelate to the change of PDMA' Ssignal strength and split, which showed that PDMA' scanon radical turned partly into localized state with nucleophile. We also discussed itselectrophilic activity and contrasted with the cation radical of polyphenylene.

Key words: Poly(N,N-dimethylaniline), Canon radical, Nucleophile