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Issue 8, 2013
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Synthesis, electrochemical and photophysical properties of covalently linked porphyrin–polyoxometalates

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Abstract

Two covalently linked porphyrin–polyoxometalate hybrids have been prepared: an Anderson-type hexamolybdate [N(C4H9)4]3[MnMo6O18{(OCH2)3CNHCO(ZnTPP)}2] with two pendant zinc(II)-tetraphenylporphyrins, and a Dawson-type vanadotungstate [N(C4H9)4]5H[P2V3W15O59{(OCH2)3CNHCO(ZnTPP)}] with one porphyrin. Electrochemical studies show independent redox processes for the organic and inorganic parts at usual potentials. Photophysical studies reveal an electron transfer from the excited porphyrin to the Dawson polyoxometalate, but not to the Anderson polyoxometalate. Time resolved absorption spectroscopy allows the identification of the electron transfer pathways and the determination of the time constants.

Graphical abstract: Synthesis, electrochemical and photophysical properties of covalently linked porphyrin–polyoxometalates

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Supplementary files

Article information


Submitted
29 Jun 2012
Accepted
22 Nov 2012
First published
22 Nov 2012

Dalton Trans., 2013,42, 2745-2754
Article type
Paper

Synthesis, electrochemical and photophysical properties of covalently linked porphyrin–polyoxometalates

C. Allain, D. Schaming, N. Karakostas, M. Erard, J. Gisselbrecht, S. Sorgues, I. Lampre, L. Ruhlmann and B. Hasenknopf, Dalton Trans., 2013, 42, 2745
DOI: 10.1039/C2DT31415K

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