A new class of photochromic diarylethenes with both azaindole and thiophene moieties were synthesized to investigate the effects of the substituents on their photochromic behaviors, and their structures were determined by single crystal X-ray diffraction analysis. The azaindole moiety was connected directly to the central cyclopentene ring as a heteroaryl moiety to participate the photoisomerization
合成了一类新的同时具有氮杂
吲哚和
噻吩基团的光致变色二
蒽,以研究取代基对其光致变色行为的影响,并通过单晶X射线衍射分析确定其结构。氮杂
吲哚部分作为杂芳基部分直接连接到中央
环戊烯环上,以参与溶液,固体无定形薄膜和单晶相中的光异构化反应。每个二
芳烃在溶液和固体介质中均显示出显着的荧光光开关。给电子的取代基显着提高了其环化量子产率,而吸电子基团大大提高了其闭环异构体的摩尔吸收系数。循环伏安法研究表明,当从给电子取代基转变为吸电子取代基时,带有氮杂
吲哚的二
芳烃的带隙显着增加。结果表明,氮杂
吲哚部分和取代基在这些二
芳烃的光异构化反应过程中起着至关重要的作用。