A Rotaxane Scaffold for the Construction of Multiporphyrinic Light-Harvesting Devices - Sorbonne Université Access content directly
Journal Articles Chemistry - A European Journal Year : 2018

A Rotaxane Scaffold for the Construction of Multiporphyrinic Light-Harvesting Devices

Iwona Nierengarten

Abstract

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.
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Dates and versions

hal-01721758 , version 1 (02-03-2018)

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Béatrice Delavaux-Nicot, Haifa Ben aziza, Iwona Nierengarten, Thi Minh nguyet trinh, Eric Meichsner, et al.. A Rotaxane Scaffold for the Construction of Multiporphyrinic Light-Harvesting Devices. Chemistry - A European Journal, 2018, 24 (1), pp.133-140. ⟨10.1002/chem.201704124⟩. ⟨hal-01721758⟩
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