Novel photochromic bis(3-thienyl)ethene with a 2,5-disubstituted thienyl unit, which shows photoswitching of solvatochromic property, was synthesized. The open-ring isomer showed solvatochromic behavior, while the closed-ring isomer did not. It was suggested that the alteration of the π-conjugated bond structure is the main cause of the switching of the solvatochromic property.
合成了具有2,5-二取代
噻吩基单元的新型光致变色双(3-
噻吩基)
乙烯,其具有溶剂化变色特性的光开关。开环异构体表现出溶剂化变色行为,而闭环异构体则没有。有人认为,π-共轭键结构的改变是溶剂化变色性质转变的主要原因。