A Rotaxane Scaffold for the Construction of Multiporphyrinic Light-Harvesting Devices
A Rotaxane Scaffold for the Construction of Multiporphyrinic Light-Harvesting Devices
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DOI：
10.1002/chem.201704124
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发表时间：
2018-01-02
影响因子：
4.3
通讯作者：
Nierengarten, Jean-Francois
中科院分区：
文献类型：
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作者：
Delavaux-Nicot, Beatrice;Ben Aziza, Haifa;Nierengarten, Jean-Francois
一个复杂的光活性分子器件已经准备了多功能纳米分子的制备（点击化学多功能支架）与超分子化学（自组装制备轮烷）相结合的最新概念。具体地，已经制备了包含游离碱卟啉终止剂的可点击的[2]轮烷支架，并用十个外围Zn（II）-卟啉部分官能化。最终化合物的电化学研究显示了一个奇特的行为，导致从分子内的锌（II）卟啉部分的协调1，2，3-三唑单元。最后，结合Zn（II）和游离碱卟啉部分的化合物的稳态研究表明，该化合物是能够通过单线态-单线态能量转移将光能从外围Zn（II）-卟啉亚基引导到核心的光捕获装置。
A sophisticated photoactive molecular device has been prepared by combining recent concepts for the preparation of multifunctional nanomolecules (click chemistry on multifunctional scaffolds) with supramolecular chemistry (self-assembly to prepare rotaxanes). Specifically, a clickable [2]rotaxane scaffold incorporating a free-base porphyrin stopper has been prepared and functionalized with ten peripheral Zn(II)-porphyrin moieties. Electrochemical investigations of the final compound revealed a peculiar behavior resulting from the intramolecular coordination of the Zn(II) porphyrin moieties to 1,2,3-triazole units. Finally, steady state investigations of the compound combining Zn(II) and free-base porphyrin moieties have shown that this compound is a light-harvesting device capable of channeling the light energy from the peripheral Zn(II)-porphyrin subunits to the core by singlet-singlet energy transfer.