Issue 9, 2011
From the journal:

New Journal of Chemistry

Structural and electrochemical characterization of metallo-porphyrins intercalated into ZnCr-layered double hydroxides: some evidence of dimer formation†

Christine Taviot-Guého,a   Matilte Halma,b   Khaled Charradi,a   Claude Foranoa  and  Christine Mousty*a  

* Corresponding authors

a Clermont Université, Université Blaise Pascal, Laboratoire des Matériaux Inorganiques, CNRS UMR 6002, F-63171 AUBIERE, France
E-mail: Christine.Mousty@univ-bpclermont.fr
Fax: +33 473407108
Tel: +33 473407598

b Université Joseph Fourier, Département de Chimie Moléculaire, CNRS UMR 5250, F-38041 GRENOBLE, France

Abstract

In this study, inorganic–organic hybrids were prepared by intercalation of metal complexes (Zn and Fe) of 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin (TSPP) into Zn2Cr layered double hydroxides (LDH) by coprecipitation method at constant pH. The resulting materials were characterized by powder X-ray diffraction, UV-Vis and FTIR spectroscopies showing the intercalation of porphyrins between the ZnCr layers. While monomer species are intercalated in the case of Zn2Cr-ZnTSPP, the intercalation of dimers is likely to occur in the case of Zn2Cr-FeTSPP. In both materials, a perpendicular orientation of the porphyrin ring against the hydroxide layers is proposed. Of particular interest is the good stability of ZnCr-LDH host over a wide pH range. The electrochemical behavior of these hybrid materials in both neutral (pH 7.0) and acid media (pH 4.5) was investigated by cyclic voltammetry. Zn2Cr-FeTSPP exhibits an electrocatalytic activity for the reduction of oxygen, hydrogen peroxide and nitrite.

Graphical abstract: Structural and electrochemical characterization of metallo-porphyrins intercalated into ZnCr-layered double hydroxides: some evidence of dimer formation

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Article information

DOI
https://doi.org/10.1039/C1NJ20400A
Article type
Paper
Submitted
09 May 2011
Accepted
21 Jun 2011
First published
15 Jul 2011

New J. Chem., 2011,35, 1898-1905

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Structural and electrochemical characterization of metallo-porphyrins intercalated into ZnCr-layered double hydroxides: some evidence of dimer formation

C. Taviot-Guého, M. Halma, K. Charradi, C. Forano and C. Mousty, New J. Chem., 2011, 35, 1898 DOI: 10.1039/C1NJ20400A

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