Synthesis and Properties of a New Unsymmetrical Diarylethene Bearing Two Thiophene Rings

Abstract:

A new unsymmetrical photochromic diarylethene has been synthesized, namely {1-(2,5-dimethyl-3-thienyl),2-[2-methyl-5-(4-trifluoromethylphenyl)-3-thienyl]}perfluorocyclopentene. Its properties, including photochromic reactivity in solution and fluorescence property both in solution and in PMMA film were investigated. It underwent reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light. The isomeric compound functioned as a fluorescence switch by photoirradiation both in solution and in PMMA film. The fluorescence intensity also showed regular changes along with the change of concentration.

• Periodical: Advanced Materials Research (Volumes 490-495)
• Pages: 3672-3675
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.490-495.3672
• Online since: March 2012
• Authors: Hui Li, Yuan Ming Tu, Gang Liu
• Keywords: Diarylethene, Fluorescence, Photochromism

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