Synthesis of New Porphyrin-Fullerene Dyads Capable of Forming Charge-Separated States on a Microsecond Lifetime Scale
作者:Alexander S. Konev、Alexander F. Khlebnikov、Pavel I. Prolubnikov、Andrey S. Mereshchenko、Alexey V. Povolotskiy、Oleg V. Levin、Andreas Hirsch
DOI:10.1002/chem.201404435
日期:2015.1.12
A series of covalently linked axially symmetric porphyrin–fullerene dyads with a rigid pyrrolo[3,4‐c]pyrrolic linker enabling a fixed and orthogonal arrangement of the chromophores has been synthesized and studied by means of transient absorption spectroscopy and cyclic voltammetry. The lifetime of the charge‐separated state has been found to depend on the substituents on the porphyrin core, reaching
借助瞬态吸收光谱和循环伏安法研究了一系列带有刚性吡咯并[3,4- c ]吡咯连接基的共价连接的轴向对称卟啉-富勒烯二联体,该连接基使得发色团得以固定和正交排列。已发现电荷分离态的寿命取决于卟啉核心上的取代基,对于具有中观-(p -MeOC 6 H 4)的物种,其最长可达4μs。)取代基。在DFT和TD-DFT B3LYP(6-31G(d))的理论水平上计算了模型化合物的基态和激发电子态,并就取代基对电荷分离态稳定的影响进行了分析。为了解释观察到的依赖性,在卟啉-富勒烯系中进行了研究。