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Ingénierie moléculaire de surface appliquée à la conception de catalyseurs hétérogènes bio-inspirés

Abstract : Dual functionalisation on the surface of a mesostructured silica MCM-41 type (LUS) is investigated using a novel approach based on the use of so-called “molecular stencil pattern”. This is processed via sequential grafting, the principle of which is based on retention or partial displacement of the templating surfactant. The latter provides the patterning from mutual electrostatic repulsion during the grafting of the first function. Then, the second functionalisation step is performed with removal of the remaining surfactant leading to an overall full coverage.
Bioinspired amino complexes of copper and europium were grafted into mesoporous silica using that approach. Characterization performed at each synthesis step using a panel of techniques (including XRD, N2-adsorption-desorption, 13C and 29Si MAS-NMR, FT-IR, EPR, EXAFS and TEM) confirm the integrity of the porous structure, the formation of the complex in the range 1 to 6 metal wt% and the homogeneity of the function distribution.
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https://tel.archives-ouvertes.fr/tel-00260531
Contributor : Sebastien Abry <>
Submitted on : Tuesday, March 4, 2008 - 1:57:03 PM
Last modification on : Friday, October 23, 2020 - 4:37:18 PM
Long-term archiving on: : Thursday, May 20, 2010 - 8:52:06 PM

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  • HAL Id : tel-00260531, version 1

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Sébastien Abry. Ingénierie moléculaire de surface appliquée à la conception de catalyseurs hétérogènes bio-inspirés. Matériaux. Ecole normale supérieure de lyon - ENS LYON; Université Claude Bernard - Lyon I, 2007. Français. ⟨tel-00260531⟩

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