Synthesis and Characterization of Small Functional Molecule Composed of BseDz

Abstract

Abstract. Novel organic conjugated molecule composed of central benzoselenadiazole (BseDZ) units as electron acceptor and two pyrrole groups as electron donors was prepared via the Stille coupling reaction. The molecular structure was verified by 1 HNMR and 13 CNMR. UV-vis spectroscopy showes that molecule has broad absorption spectrum and a low band gap by theoretical calculation, The fluorescence spectra exhibit strong emission peaks in the organic light regions. Cyclic voltammetry exhibited that molecule have reversible redox curve, property of electrochemical is stable. which suggest that it has potential application value in photovoltaic material. IntroductionThe D-A type molecules have attracted much attention because of their great potential applications as photoactive materials in molecular electronics, Owing to the advantages of π-conjugated molecules, ease of molding, and outstanding physical characteristics, they have found application to organic photovoltaic cells (OPVs)