苝
光化学
发色团
噻吩
接受者
超快激光光谱学
化学
循环伏安法
光诱导电子转移
电子受体
荧光
电子转移
材料科学
光谱学
电化学
分子
物理化学
有机化学
物理
量子力学
凝聚态物理
电极
作者
Kevin Bold,Matthias Stolte,Kazutaka Shoyama,Marco Holzapfel,Alexander Schmiedel,Christoph Lambert,Frank Würthner
标识
DOI:10.1002/anie.202113598
摘要
Two macrocyclic architectures comprising oligothiophene strands that connect the imide positions of a perylene bisimide (PBI) dye have been synthesized via a platinum-mediated cross-coupling strategy. The crystal structure of the double bridged PBI reveals all syn-arranged thiophene units that completely enclose the planar PBI chromophore via a 12-membered macrocycle. The target structures were characterized by steady-state UV/Vis absorption, fluorescence and transient absorption spectroscopy, as well as cyclic and differential pulse voltammetry. Both donor-acceptor dyads show ultrafast Förster Resonance Energy Transfer and photoinduced electron transfer, thereby leading to extremely low fluorescence quantum yields even in the lowest polarity cyclohexane solvent.
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