Enantioselective recognition at mesoporous chiral metal surfaces

Chularat Wattanakit, Yémima Bon Saint Côme, Veronique Lapeyre, Philippe A. Bopp, Matthias Heim, Sudarat Yadnum, Somkiat Nokbin, Chompunuch Warakulwit, Jumras Limtrakul and Alexander Kuhn ()
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Chularat Wattanakit: Univ. de Bordeaux, CNRS, ISM, UMR 5255, ENSCBP
Yémima Bon Saint Côme: Univ. de Bordeaux, CNRS, ISM, UMR 5255, ENSCBP
Veronique Lapeyre: Univ. de Bordeaux, CNRS, ISM, UMR 5255, ENSCBP
Philippe A. Bopp: Univ. de Bordeaux, CNRS, ISM, UMR 5255, 351 cours de la Libération
Matthias Heim: Univ. de Bordeaux, CNRS, ISM, UMR 5255, ENSCBP
Sudarat Yadnum: Univ. de Bordeaux, CNRS, ISM, UMR 5255, ENSCBP
Somkiat Nokbin: Kasetsart University
Chompunuch Warakulwit: Kasetsart University
Jumras Limtrakul: Kasetsart University
Alexander Kuhn: Univ. de Bordeaux, CNRS, ISM, UMR 5255, ENSCBP

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract Chirality is widespread in natural systems, and artificial reproduction of chiral recognition is a major scientific challenge, especially owing to various potential applications ranging from catalysis to sensing and separation science. In this context, molecular imprinting is a well-known approach for generating materials with enantioselective properties, and it has been successfully employed using polymers. However, it is particularly difficult to synthesize chiral metal matrices by this method. Here we report the fabrication of a chirally imprinted mesoporous metal, obtained by the electrochemical reduction of platinum salts in the presence of a liquid crystal phase and chiral template molecules. The porous platinum retains a chiral character after removal of the template molecules. A matrix obtained in this way exhibits a large active surface area due to its mesoporosity, and also shows a significant discrimination between two enantiomers, when they are probed using such materials as electrodes.

Date: 2014
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DOI: 10.1038/ncomms4325

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