Our increasing dependence on lithium-ion batteries for energy storage applications calls for continual performance improvements of their positive electrodes, which have so far relied solely on cationic redox of transition-metal ions for driving the electrochemical reactions. Great hope has recently been placed on the emergence of anionic redox – a ...
Le néodyme appartient à la série des lanthanides se trouvant dans le tableau périodique. Il est le composant clé des aimants permanents Nd2Fe14B implantés dans différents appareils électroniques mais aussi dans appareils dis « écologiques » comme les éoliennes, les voitures ou vélos électriques. De nos jours seulement 1 % du néodyme présent dans le...
Le développement de nouvelles méthodologies de synthèse douces et soucieuses de l'environnement apparait de nos jours comme un véritable besoin. Dans ce contexte, la chimie radicalaire permet de réaliser une grande variété de réactions grâce à des initiations douces (électrochimique ou photochimique). Les indoles tétracycliques et les molécules gem...
Cette thèse a pour objectif de développer une méthode électrochimique permettant de cribler à haut débit des inhibiteurs d'enzymes. Pour cela, une enzyme cible a été sélectionnée pour son intérêt thérapeutique, la transcétolase (TK) : elle est impliquée dans de nombreuses pathologies (cancer, maladies neurodégénératives, diabète…) et dans la survie...
It is the surface, not the bulk material that interacts with the surrounding environment; hence by altering the surface in a controlled manner we can modulate the properties of the material towards its environment. Aryldiazonium salts are suitable to tailor the surface properties since their structural diversity and their electrochemically-assisted...
The use of mononuclear confined metals inside discrete molecular pockets was proved to be a powerful tool in the confined catalysis field. Due to the conical shape of cyclodextrins (CD), these macrocycles are perfect candidates for the synthesis and applications of confined metals. In this work, the synthesis of NHC-capped cyclodextrins (ICyD) comp...
The expectations around graphene come from huge potentialities for various applications (RF transistor, (bio)sensors…). Graphene high specific surface, mechanical resistance and conductivity make it specifically attractive for electrochemical storage applications. It has been shown that graphene sheets could be assembled to form structured graphene...
Nickel-metal hydride (NiMH) batteries are currently dominating the market of energy storage in hybrid electric vehicles. 1 billion cells are estimated to be produced each year. In their end-of-life, these electronical wastes exhibit low recycling rates, despite the fact that NiMH batteries contain high amounts of valuable and strategic metals. Two ...
Published in FEBS letters
The coupling of the reaction of a tightly bound ubiquinone with the reduction of O2 in cytochrome bo3 of Escherichia coli was investigated. In the absence of the quinone, a strongly diminished rate of electrocatalytic reduction of oxygen is detected, which can be restored by adding quinones. The correlation of previous EPR data with the electrocata...
The in situ investigation of electrochemical interfaces structures at the nanoscale is a key element in the understanding of charge and electron transfer mechanisms e.g. in the fields of energy storage or electrocatalysis. This thesis introduces the implementation of tip-enhanced Raman spectroscopy (TERS) in liquid and in electrochemical conditions...
