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Covalent hybrids based on Re(I) tricarbonyl complexes and polypyridine-functionalized polyoxometalate: synthesis, characterization and electronic properties

Abstract

A series of [Re(CO)3Br(N^N)] (N^N = substituted 2,2’-bipyridine ligand) complexes based on polypyridine-functionalized Dawson polyoxometalate (1-3) has been synthesized. The new hybrids (4-6) were characterized by various analytical techniques, including absorption, vibrational and luminescence spectroscopies as well as electrochemistry. Both units, the polyoxometalate and the transition metal complex, retain their intrinsic properties. Their combination in the newly prepared hybrids results in improved photosensitization in the high-energy visible region. However, a complete quenching of the emission for the [Re(CO)3Br(N^N)] complexes is observed due to formation of a charge separated state, Re(II) – POM-, as shown by quenching experiments as well as theoretical modelization via DFT.

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Publication details

The article was received on 08 May 2017, accepted on 04 Jul 2017 and first published on 07 Jul 2017


Article type: Paper
DOI: 10.1039/C7DT01674C
Citation: Dalton Trans., 2017, Accepted Manuscript
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    Covalent hybrids based on Re(I) tricarbonyl complexes and polypyridine-functionalized polyoxometalate: synthesis, characterization and electronic properties

    T. Auvray, M. Santoni, B. Hasenknopf and G. Hanan, Dalton Trans., 2017, Accepted Manuscript , DOI: 10.1039/C7DT01674C

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