The effect of the cyano group position upon unsymmetrical isomeric diarylethenes bearing a pyrrole unit
作者:Gang Liu、Shouzhi Pu、Xiaomei Wang、Weijun Liu、Congbin Fan
DOI:10.1016/j.dyepig.2010.12.007
日期:2011.8
Four photochromic diarylethenes bearing a pyrrole moiety were synthesized, and the structures of two of the new isomeric compounds were determined by single-crystal X-ray diffraction analysis. Each of the diarylethene derivatives exhibited good photochromism both in solution and in poly(methyl methacrylate) films, which their photoconversion ratios from open-ring to closed-ring isomers were larger