In furtherance of our research on the design, synthesis and study of electrogenerated chemiluminescence (ECL) of new donor substituted phenylquinolinylethynes, we report here more new series with the aim of studying the effect of positional isomerism on their overall photophysical properties with a special focus on ECL. For this study we have chosen 2-, 3-, and 4-(p-substituted phenyl)ethynylquinolines, and 1- and 4-(p-substituted phenyl)ethynylisoquinolines. These ethynes were synthesized in good yields by modified Sonogashira coupling of the corresponding terminal alkyne with the respective haloquinolines. The photophysical properties and ECL were studied in acetonitrile solvent and the various results are discussed.
为了进一步研究新型供体取代的苯基
喹啉乙炔的电
化学发光(
ECL)的设计、合成和研究,我们在此报道了一系列新的化合物,旨在研究位置异构对其整体光物理性质的影响,特别是
ECL。在这项研究中,我们选择了2-、3-和4-(对位取代苯基)
乙炔基
喹啉,以及1-和4-(对位取代苯基)
乙炔基
异喹啉。这些
乙炔是通过改进的Sonogashira偶联反应,将相应的末端
炔烃与各自的卤代
喹啉合成得到的,产率良好。这些化合物的光物理性质和
ECL在
乙腈溶剂中进行了研究,并讨论了各种结果。