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A class of bis-thiolactone derivatives is prepared by photo-conversion of photochromic diarylethenes with a bis (5-chloro-2-methylthiophen-3-yl) system in moderate yields (50–60%). Bis-thiolactone derivatives show fluorescence in solution with moderate fluorescent quantum yields (0.11–0.17). Reaction mechanism exhibits that the photo-conversion of diarylethenes to bis-thiolactone derivatives undergoes...
A novel series of symmetrical diarylethenes incorporating two imidazole bridge units and their N-methylated derivatives have been synthesized, and the products have been characterized by means of NMR and MS. Each of the compounds displays excellent photochromism and both “turn-off” and “turn-on” fluorescence properties upon UV/vis light irradiation in solution. It has been found that the electronic...
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