1235341-67-9Relevant articles and documents
The photochromism of unsymmetrical diarylethene isomers with an electron-withdrawing cyano substituent
Pu, Shouzhi,Liu, Weijun,Liu, Gang
, p. 1 - 9 (2010)
Three unsymmetrical isomeric diarylethenes bearing an electron-withdrawing cyano group were synthesized and their structures determined using single-crystal X-ray diffraction analysis. Each of the compounds displayed excellent photochromism in solution, in PMMA film, as well as in the crystalline phase. The isomeric compounds also functioned as a fluorescence switch in PMMA films. The cyclization quantum yield and the absorption maxima of both the ring-opened and ring-closed isomers increased in the order: ortho- a marked effect on the electrochemical behaviours of these isomeric diarylethenes.
