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Capsules hélicoïdales d’oligoamides aromatiques : détecteurs moléculaires pour le dosage d’acides organiques du vin

Abstract : Some relevant wine small molecular components can be selectively recognized by foldamer capsules – artificial oligomeric compounds able to fold into well-defined objects possessing an inner cavity. In recent years, selective and high affinity receptors for fructose, tartaric acid and malic acid have been reported. Here, a new methodology, using solid phase synthetic techniques, for the preparation of a gluconic acid receptor will be discussed. To transform these receptors into sensors, a fluorescent moiety has been incorporated in the binding site. A proof of concept has been achieved using a fluorescence titration of tartaric acid. Indeed, when the guest is encapsulated, a modification of the fluorescence emission is observed. Finally, these fluorescent receptors have been anchored to silica surfaces and pave the way to the development of mobile detection devices. Such sensors could be useful to the wine industry to ensure proper control of biological processes for example during fermentation.
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Antoine Jacquet. Capsules hélicoïdales d’oligoamides aromatiques : détecteurs moléculaires pour le dosage d’acides organiques du vin. Chimie organique. Université de Bordeaux, 2017. Français. ⟨NNT : 2017BORD0921⟩. ⟨tel-01714965⟩

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