The synthesis of novel photochromic diarylethenes bearing a biphenyl moiety and the effects of substitution on their properties
作者:Shouzhi Pu、Wenjuan Miao、Shiqiang Cui、Gang Liu、Weijun Liu
DOI:10.1016/j.dyepig.2010.04.005
日期:2010.11
investigated. Under alternating irradiation with UV and visible light, the compounds exhibited good photochromism and functioned as fluorescent photoswitches both in solution and in PMMA film. Electron-donating substituents shifted the λmax of the diarylethenes to longer wavelengths and decreased their cyclization quantum yield, while electron-withdrawing substituents greatly increased both cyclization
合成了一类新的带有联苯部分的二芳基乙烯,研究了取代基对光致变色,荧光和电化学特性的影响。在紫外线和可见光交替照射下,这些化合物表现出良好的光致变色性,并且在溶液和PMMA膜中均起着荧光光开关的作用。给电子取代基移位λ最大的二芳基乙烯的向更长的波长,并降低它们的环化的量子产率,而吸电子取代基极大地提高两者环化和裂环作用的量子产率。另外,循环伏安法表明,取代基对二芳基乙烯衍生物的电化学行为具有显着影响。