Photochromism of a New Unsymmetrical Diarylethene Bearing both Thiazole and a Methoxyl Group
A new unsymmetrical isomeric diarylethene bearing an electron-donating methoxyl group at ortho-positions of the terminal phenyl ring was synthesized, namely 1-(2,4-dimethyl-5-thiazolyl) -2-[2-methyl-5-(2-methoxyphenyl)-3-thienyl]perﬂuorocyclopentene (1o). The compound displayed excellent photochromism both in solution and in PMMA film. The isomeric compound also functioned as a ﬂuorescence switch by photoirradiation in solution. In addition, cyclic voltammetry tests showed that the electron-donating methoxyl group at the terminal benzene ring had a signiﬁcant effect on the electrochemical properties of the isomeric diarylethene.
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
H. Li et al., "Photochromism of a New Unsymmetrical Diarylethene Bearing both Thiazole and a Methoxyl Group", Advanced Materials Research, Vols. 295-297, pp. 228-231, 2011