Centre for Organic and Nanohybrid Electronics, Silesian University of Technology, Gliwice, Poland. University Grenoble Alpes, DCM UMR 5250, 38000 Grenoble, France
Dr Serge Cosnier is currently Emeritus Director of Research at CNRS at the Grenoble Alpes University (France) and professor at the Silesian University of Technology in Gliwice (Poland). His activity is focused on the molecular electrochemistry and bioelectrochemistry with the development of electrode materials whose applications include biological sensors and energy conversion. He has developed innovative conceptual advances in the field of electrogenerated organic polymers, inorganic nanostructured materials and 3D nanostructured conductive materials based on carbon nanotubes. He serves as Editor of Bioelectrochemistry and Specialty Chief Editor of Frontiers in Analytical Chemistry. Dr Cosnier has authored over 400 peer reviewed publications (h-index WoS 71), 3 books and holds 25 patents. In 2010, he was appointed as Fellow of the International Society of Electrochemistry. In 2013, Dr Cosnier became a member of the Academia Europaea and was elected member of the European Academy of Sciences in 2019 and Fellow of American Institute for Medical and Biological Engineering in 2021.
For four decades, the functionalization of electrodes by biomaterials based on electrogenerated polymers, carbon nanotubes and / or nano-objects, was widely used in the field of analytical chemistry and energy conversion for the design of biosensors and biofuel cells. Some new approaches for developing nanostructured biomaterials based on functionalized carbon nanotubes, glyconanoparticles and hollow electrodes will be illustrated with enzymes as catalytic element. The self-assembly of carbon nanotubes in the form of conductive sheets (buckypapers) was used to generate bioelectrodes. Recently, the concept of hollow bioelectrodes based on the bonding of two buckypapers was developed to generate a microcavity defined by the thickness of the glue linking the two sheets [1]. These buckypapers are permeable only to water and enzyme substrates but not allow the permeation of enzymes. Therefore, the enzyme trapped in powder form is then solubilized inside the microcavity leading to a high density of biocatalyst in solution with an electrical connection with the buckypapers. The electrocatalytic performance of the bilirubin oxidase hollow electrode was described as a function of pH, temperature and the amount of entrapped enzyme. Such type of bioelectrodes was applied to the design of biofuel cells. The development of glyconanoparticles resulting from the self-assembly of block copolymers composed of polystyrene and cyclodextrin as an inclusion site will be also reported. These glyconanoparticles, which are stable in water, constitute a multivalent platform for binding hydrophobic fluorescent or electroactive molecules. These nanoparticles were applied to the elaboration of solubilized enzymatic fuel cell in solution or were grafted on surfaces for the development of amperometric enzyme electrodes [2,3].
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