Synthesis and the effects of substitution upon photochromic diarylethenes bearing an isoxazole moiety
作者:Shouzhi Pu、Hui Li、Gang Liu、Weijun Liu、Shiqiang Cui、Congbin Fan
DOI:10.1016/j.tet.2010.12.041
日期:2011.2
diarylethene derivatives. As compared to the unsubstituted parent diarylethene, introduction of the electron-donating/withdrawing substituents could efficiently modulate the optical and electrochemical properties of the diarylethenes bearing an isoxazole moiety. All results indicated that the isoxazole moiety and the substitution effects played a very important role during the process of photochromic reaction
合成了一类新的带有异恶唑部分的不对称光致变色二硫杂环丁烷,并系统地研究了取代对其的光学和电化学性能的影响。每种化合物均在溶液和聚(甲基丙烯酸甲酯)薄膜中均表现出显着的光致变色作用并充当荧光光开关。给电子的取代基有效地将最大吸收和发射峰移向更长的波长方向,而吸电子的取代基显着提高了这些二芳基乙烯衍生物的荧光量子产率和氧化开始。与未取代的母体二芳基乙烯相比,给电子/吸电子取代基的引入可以有效地调节带有异恶唑部分的二芳烃的光学和电化学性质。所有结果表明,异恶唑部分和取代作用在这些二芳基乙烯衍生物的光致变色反应过程中起着非常重要的作用。