Delavaux-Nicot Béatrice, Ben Aziza Haifa, Nierengarten Iwona, Minh Nguyet Trinh Thi, Meichsner Eric, Chessé Matthieu, Holler Michel, Abidi Rym, Maisonhaute Emmanuel, Nierengarten Jean-François
Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, BP 44099, 31077, Toulouse Cedex 4, France.
Université de Toulouse, UPS, INPT, 31077, Toulouse Cedex 4, France.
Chemistry. 2018 Jan 2;24(1):133-140. doi: 10.1002/chem.201704124. Epub 2017 Nov 30.
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.
通过将制备多功能纳米分子的最新概念（多功能支架上的点击化学）与超分子化学（自组装制备轮烷）相结合，制备了一种复杂的光活性分子装置。具体而言，制备了一种带有游离碱卟啉封端基的可点击[2]轮烷支架，并用十个外围的Zn(II) - 卟啉部分进行功能化。对最终化合物的电化学研究揭示了Zn(II)卟啉部分与1,2,3 - 三唑单元的分子内配位所导致的特殊行为。最后，对结合Zn(II)和游离碱卟啉部分的化合物的稳态研究表明，该化合物是一种能够通过单重态 - 单重态能量转移将光能从外围Zn(II) - 卟啉亚基传导至核心的光捕获装置。
