Syntheses and Properties of a Unsymmetrical Photochromic Diarylethene with a Dimethylamino Group
A unsymmetrical diarylethene derivative bearing both pyrrole and thiophene moieties, in which a dimethylamino group was substituted at the parapositions of the terminal phenyl ring, was synthesized. The results showed that this compound exhibited reversible photochromism, undergoing reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light both in solution and in PMMA film, and its absorption maxima were observed at 610 nm in hexane and at 640 nm in PMMA amorphous film, respectively, upon irradiation with 297 nm UV light. The fluorescence intensity of diarylethene decreased dramatically along with the photochromism from openring isomer to closed-ring isomer upon irradiation with 297 nm UV light in PMMA. In hexane solution, the open-ring isomer of the diarylethene 1 exhibited relatively strong fluorescence at 393 nm when excited at 330 nm. Besides, The electrochemcial switching property can be potential use for electrochemistry data storage.
Duohua Jiang Shouzhi Pu Weijun Liu Wenjuan Miao
Jiangxi Key Lab of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang 33001 Jiangxi Key Lab of Organic Chemistry, Jiangxi Science & Technology Normal University, Nanchang 3300
国际会议
The 31st International Congress on Imaging Science(第31届国际影像科学大会 ICIS2010)
北京
英文
767-770
2010-05-12（万方平台首次上网日期，不代表论文的发表时间）