Synthesis, Properties and Application in Optical Memory of a New Photochromic Diarylethene
A new photochromic diarylethene compound, 1-[2-methyl-3-benzothiophene]-2- [5-(3-chlorobenzene)-2-methyl-3-thienyl]perfluorocyclopentene(1a), was synthesized and its photochromism and photo-induced anisotropy was investigated. It showed good photochromism and functioned as an effective fluorescent photoswitch in solution. In hexane, the open-ring isomer of the diarylethene 1a exhibited relatively strong fluorescence at 417 nm when excited at 315 nm. In PMMA film, diarylethene 1a also showed good photochromism.
M. Liu et al., "Synthesis, Properties and Application in Optical Memory of a New Photochromic Diarylethene", Key Engineering Materials, Vols. 474-476, pp. 1259-1262, 2011