Abstract: The fluorescence spectra of a novel monomer, dimethyl aminophenyl acrylamide solution, and its polymer solution have been studied in this work. Results have shown that, there are two parts, electron donor and acceptor, in a single molecule. The electron transfer between molecules was occured by light excitation. The fluorescence intensity of this monomer is weaker, than that of its corresponding polymer. This monomer could be polymerized by light excitation.