A novel photochromic diarylethene based on thiophene moiety was synthesized and its photochromic and fluorescent properties were also investigated. This compound exhibited reversible photochromism, changing from colorless to violet after irradiation with UV light. It underwent reversible cyclization and cycloreversion reactions upon alternating with UV and visible light both in solution and in poly-methyl methacrylate (PMMA) amorphous film. Also, it exhibited remarkable fluorescence switching in the solid state. Using this dithienylethene 1c as optical storage was performed successfully.