Syntheses and properties of new photochromic diarylethene derivatives having a pyrazole unit
作者:Shouzhi Pu、Tianshe Yang、Jingkun Xu、Bing Chen
DOI:10.1016/j.tetlet.2006.06.073
日期:2006.9
Newphotochromic diarylethenes 1a, 2a and 3a bearing a pyrazole unit have been synthesized. Their properties, including photochromic reactivity, fluorescence and electrochemical properties were investigated. These compounds showed good photochromicproperties, high cycloreversion quantum yield and relatively strong fluorescence. The cycloreversion quantum yields of 1a, 2a and 3a are 0.46, 0.53 and