amide groups in solution. And also, this macrocycle was fluorescent in solution and showed a highly selective fluorescence quenching response toward the highly toxic Hg2+. More importantly, this macrocycle could induce gelation of several solvents. Significantly, an interesting aggregation-induced enhanced emission (AIEE) behavior was observed for this macrocycle upon gelation. Both SEM and TEM investigations
通过Pd / Cu介导的均相偶联反应获得了带有内乙酰胺基团的新亚芳基
乙炔基大环(AEM)分子。引入
四甘醇醚作为两个C形片段之间的连接,可显着提高最终环化收率(30%)。浓度依赖性的1 HNMR实验表明,对于这种新的具有酰胺基团的大环,观察到了通过H键形成的强聚集体。而且,该大环化合物在溶液中发荧光,并显示出对高毒性Hg 2+的高选择性荧光猝灭响应。更重要的是,该大环化合物可以诱导几种溶剂的胶凝。显着地,在凝胶化时观察到该大环的有趣的聚集诱导的增强发射(AIEE)行为。
SEM和
TEM研究均表明,干凝胶中存在纳米孔结构。这项研究提供了一种新的分子设计方法,可以从具有功能腔的平面AEM分子开发荧光凝胶。