Through gold(I)-catalyzed cascade cyclization as a key step, the title electron donor was prepared, which adopts a planar geometry, as confirmed by an X-ray analysis. Due to 1,4-phenylenediamine moiety incorporated in the framework, it undergoes reversible one-electron oxidation. Upon electrolysis, it exhibited an electrochromic response in the UV–vis–NIR region, which was accompanied by a drastic change in the fluorescence spectrum since only the neutral donor is highly fluorescent.
通过
金(I)催化的级联环化这一关键步骤,制备出了标题电子供体,并通过 X 射线分析证实了其平面几何形状。由于框架中含有 1,4-
苯二胺分子,它可以进行可逆的单电子氧化。电解时,它在紫外-可见-近红外区域表现出电致变色反应,同时由于只有中性供体具有高荧光,荧光光谱也发生了急剧变化。