Photochromism of a Furylfulgide, 2--3-isopropylidenesuccinic Anhydride in Solvents and Polymer Films

Article abstract of DOI:10.1246/bcsj.63.1607

The quantum yields of the photochromic reaction between (E)- and (Z)-2-<1-(2,5-dimethyl-3-furyl)ethylidene>-3-isopropylidenesuccinic anhydride and the cyclized valence isomer were determined in various solvents and polymers.In both media the ring-opening quantum yield (Φ_CE) depended on the dielectric constant of the media.In some polymer films, Φ_CE were larger, and the cyclization quantum yield (Φ_EC) and olefinic isomerization quantum yields (Φ_EZ and Φ_ZE) were smaller than those in the corresponding solvents.