Hybrid Systems for the Separation (LHYS)

Molecular Polymetallic Compounds for Photochemistry

The increase of the energy demand and the limitation of the nature reserves of fossil fuels bring us to find new methods to produce and to store some energy. That’s why since a few decades, the scientists try to develop molecular systems inspired by functions realized by the nature (1,2). These systems require the association of several constituents molecular as a photosensitizer coupled through an organic ligand to a catalyst. The main aims of this study are to determine and compare charge transfer and charge separation induced by light irradiation, between a molecular species and the related 3D coordination polymer. The expected results are an improvement of the photophysical yield when going from molecule to condensed matter.

The first step of this work was to develop molecular bimetallic species to get the photophysical and electrochemical properties. Several systems containing Ru and Ru-Co were synthetized and some basic characteristics were collected. These bimetallic species are built up in order to be used as potential basic blocks in high ordered matter. The organic bitopic ligand developed in this frame shows a delocalized electronic pi-system based on nitrogen containing aromatic rings. A second step will be the transposition in a 2D or 3D molecular hybrid network of the molecular build unit previously developed.

References :
(1)  V. Balzani, A. Credi, M. Venturi, ChemSusChem, 2008, 1, 26-58.
(2) E. Andreiadis, M. Chavarot-Kerlidou, M. Fontecave, V. Artero, Photochemistry and Photobiology, 2011, 87, 946-964.


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