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Synthesis and properties of diads based on tetra-aryl porphyrins and ruthenium bis-terpyridine-type complexes

Laboratoire de Chimie Organo-Minérale, UMR 7513 CNRS, Université Louis Pasteur, Institut Le Bel, 4 rue Blaise Pascal, 67070 Strasbourg, France

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and

JEAN-PAUL COLLIN

Laboratoire de Chimie Organo-Minérale, UMR 7513 CNRS, Université Louis Pasteur, Institut Le Bel, 4 rue Blaise Pascal, 67070 Strasbourg, France

Corresponding author, Laboratoire de Chimie Organo-Minérale, UMR 7513 CNRS, Université Louis Pasteur, Institut Le Bel, 4 rue Blaise Pascal, 67070 Strasbourg, France.

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https://doi.org/10.1002/jpp.370Cited by:27 (Source: Crossref)

Abstract

Four diads consisting of a free-base or zinc aryl-porphyrin associated with two ruthenium(II) bis(terdentate) complexes (non-cyclometallated Ru(N6) or cylometallated Ru(N5C)) have been synthesized. The strong electron-withdrawing properties of the Ru(N6) as compared to the Ru(N5C) complex have been illustrated by their electrochemical and spectroscopic properties. Emission spectra of the diads and the reference compounds have shown that very efficient fluorescence quenching occurs, probably by energy transfer processes from the porphyrin to the ³MLCT excited state of the ruthenium unit.

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