units (Pn, n = 1, 2, or 4). When the porphyrin oligomer bridges are photoexcited, long-range charge separated states are formed through a series of electron-transfer steps and the rates of photoinduced charge separation and charge recombination in these systems were elucidated using time-resolved absorption and emission measurements. The rates of long-range charge recombination, through these conjugated
长距离电子转移对于分子电子学和太阳能收集的许多未来应用很重要。在这些情况下,寻找能够在纳米距离内以受控方式有效介导电子的分子系统,即充当分子线的结构,是非常有趣的。在这里,我们研究了一系列
丁二炔连接的
卟啉低聚物,其
二茂铁和
富勒烯 (C60) 末端由一个、两个或四个
卟啉单元(Pn、n = 1、2 或 4)隔开。当
卟啉低聚物桥被光激发时,通过一系列电子转移步骤形成长程电荷分离状态,并使用时间分辨吸收和发射测量阐明这些系统中光致电荷分离和电荷
重组的速率。