Fluorescence switching of a diarylethene derivative having oxazole rings

A diarylethene derivative, in which oxazole rings are attached to the ethene moiety at the 5-position, was synthesized. and its photochromic and fluorescent properties were examined. The derivative undergoes photochromism in Solution and the open-ring isomer exhibits strong fluorescence. The fluorescence intensity was found to reversibly change along with the photochromism.