Highly ordered transparent mesoporous TiO2 thin films: an attractive matrix for efficient immobilization and spectroelectrochemical characterization of cytochrome c

Christophe Renault; Véronique Balland; Eugenia Martinez-Ferrero; Lionel Nicole; Clément Sanchez; Benoît Limoges

doi:10.1039/B919976D

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Highly ordered transparent mesoporous TiO₂ thin films: an attractive matrix for efficient immobilization and spectroelectrochemical characterization of cytochrome c†

Christophe Renault,^a Véronique Balland,*^a Eugenia Martinez-Ferrero,^b Lionel Nicole,^b Clément Sanchez^b and Benoît Limoges*^a

Author affiliations

* Corresponding authors

^a Laboratoire d’Electrochimie Moléculaire, Université Paris Diderot, UMR CNRS 7591, 15, rue Jean-Antoine de Baïf, 75205 Paris Cedex 13, France
E-mail: veronique.balland@univ-paris-diderot.fr, limoges@univ-paris-diderot.fr
Fax: +33 157278788
Tel: +33 157278789

^b Laboratoire de Chimie de la Matière Condensée de Paris, UMR CNRS 7574, UPMC-Paris 6-Collège de France, 11, place Marcelin Berthelot, 75231 Paris Cedex 05, France

Abstract

We demonstrate remarkably fast incorporation and high loading of cytochrome c within thin films of periodically ordered nanocrystalline TiO₂ deposited on transparent electrodes. The immobilized cytochrome c is not denaturated and it can be reversibly reduced without mediator over the time scale of a few seconds as evidenced by spectroelectrochemistry.

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Supplementary files

Experimental and instrumental details. Spectra of Fe^II-cyt c in mesoporous film and solution PDF (260K)

Article information

DOI: https://doi.org/10.1039/B919976D
Article type: Communication
Submitted: 25 Sep 2009
Accepted: 30 Oct 2009
First published: 12 Nov 2009

Download Citation

Chem. Commun., 2009, 7494-7496

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Highly ordered transparent mesoporous TiO₂ thin films: an attractive matrix for efficient immobilization and spectroelectrochemical characterization of cytochrome c

C. Renault, V. Balland, E. Martinez-Ferrero, L. Nicole, C. Sanchez and B. Limoges, Chem. Commun., 2009, 7494 DOI: 10.1039/B919976D

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Chemical Communications