Abstract
A novel unsymmetrical photochromic diarylethene 1o, which is named [1-(2-Methyl-5-pheyl-3-thienyl)-2-(2-methyl-5-(4-cyanophenyl)-3-thienyperfluorocyclopentene, was synthesized and its structure authenticated. What is more, photochromic, kinetics and fluorescence properties of the diarylethene were investigated in detail. The result indicated that this diarylethene photochromism could be controlled by UV-Vis light, changing the color from colorless to blue in hexane solution upon appropriate irradiation with 297 nm light, respectively. Its In the meantime, the kinetic experiments illustrated that the cyclization/cycloreversion process of this compound was determined to be the zeroth/first reaction. In addition, the fluorescence intensity of diarylethene decreased dramatically from open-ring isomer to closed-ring isomer. The fluorescence switching property can be potential use for optical data storage.
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