Using the Adler-Longo method,the two series of the 8 kinds of a median tetra-substituted ester por-phyrin compounds which has the symmetrical structure have been designed and synthesized in this paper,and their structure was characterized by1 H NMR,13 C NMR,IR.Their optoelectronic properties were studied by UV-Vis absoption spectra and Fluorescence emission spectra,and its orbital energy level was studied by the cy-clic voltammetry.Results indicate that the synthesis of the median tetra-substituted ester porphyrin compounds have a high quantum efficiency and a lower orbital energy gap.In addit...