Pillar[5]arene-porphyrin conjugates: from molecular flowers to photoactive rotaxanes

Author:

Nierengarten Iwona1,Hahn Uwe1,Holler Michel1,Delavaux-Nicot Béatrice2,Maisonhaute Emmanuel3,Nierengarten Jean-François1

Affiliation:

1. Laboratoire de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR 7042, LIMA), Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 rue Becquerel, 67087 Strasbourg Cedex 2, France

2. Laboratoire de Chimie de Coordination du CNRS (UPR 8241), Université de Toulouse (UPS), 205 Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France

3. Sorbonne Université, CNRS, Laboratoire Interfaces et Systèmes Electrochimiques, 4 Place Jussieu, 75005 Paris, France

Abstract

Our groups are involved in a research program on the development of molecular and supramolecular systems combining pillar[5]arene building blocks with porphyrins. Functionalization of both rims of the pillar[5]arene scaffold with metalloporphyrins generated giant molecular machines mimicking the blooming of a flower as well as light-harvesting devices. On the other hand, we have also used the host-guest properties of pillar[5]arene derivatives to prepare photoactive mechanically interlocked molecules. In such compounds, complementary subunits are associated into a single molecular ensemble but without being connected through covalent bonds. Inter-component photo-induced energy transfer processes remain however extremely fast in these systems despite the exclusive link through mechanical bonds. All these results are described in the present review.

Funder

ANR

Publisher

World Scientific Pub Co Pte Ltd

Subject

General Chemistry

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