Abstract: The electrochemical properties of red fluorescent materials（DNP-2CN,DPN-2CN,DPN-4CN,NNCa-2CN,PNCa-2CN and PNCa-4CN）based on isophorone were studied by cyclic voltammetric experiments and the absorption spectra.The optical properties were observed by the absorption spectra and photoluminescence spectra.These materials have the same molecular structure: donor-π-acceptor,with dicyanomethylidene as the electron-acceptor and triarylamine or N-aryl-amine as the electron-donor.The effects of molecular structure on the electronic level structure of the molecule and the optical properties were also explored.