| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Gros, Pierre
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2020Electrochemical sensors for iron speciation in artificial water systems
- 2020A novel electrochemical sensor for Hg(II) trace detection in natural waters based on a glassy carbon electrode functionalized by Gold nanoparticles and diazonium salts
- 2019Gold nanoparticles electrodeposition for Hg(II) trace detection: Design and optimization of a new sensitive electrochemical sensor.
- 2019Gold nanoparticles electrodeposition on functionalized glassy carbon electrode for Hg(II) trace sensing
- 2016Mixed diazonium/PEDOT-functionalized graphene electrode for antioxidant biomarkers detection: proof-of-concept for integration on silicon substrate
- 2013Elaboration of integrated microelectrodes for the detection of antioxidant speciescitations
- 2005Electrochemically Enhanced Biosynthesis of Gluconic Acidcitations
Places of action
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conferencepaper
Mixed diazonium/PEDOT-functionalized graphene electrode for antioxidant biomarkers detection: proof-of-concept for integration on silicon substrate
Abstract
International audience ; During the last two decades, a growing number of research works has been devoted to oxidative stress, which represents a major problem with respect to healthiness, as it is known to be involved in ageing processes and has been suggested to be one of the potential causes for cataract, cancers, cardiovascular and degenerative diseases (Parkinson, Alzheimer) and even male infertility [1]. Among the low molecular weight antioxidant species, ascorbic (AA) and uric (UA) acids are of particular interest since they are present in most biological fluids and thus may be considered as biochemical markers in a lot of pathologies related to oxidative stress (preeclampsia disease, neonatal hypoxia, coronary heart diseases…) [2]. Recently, we have reported on a sensor based on a gold electrode functionalized by an electrogenerated polymer, namely poly[3,4-ethylenedioxythiophene] (PEDOT), for the simultaneous assay of UA and AA [3-5]. This sensor exhibited very good analytical performances including selectivity. We further improved the sensor by using a glassy carbon (GC) electrode functionalized by successive electrodeposition of 4-thiophenylbenzene diazonium (TBD) and (PEDOT) [6]. The use of the TBD layer induced an enhancement of the sensitivity, a lower detection limit for AA and an improved lifetime of the sensor. However, GC is hardly compatible with the silicon technologies required for a cost-effective mass production of integrated microelectrodes and the associated electrochemical microcells. In the present work, we have developed the proof-of-concept of a mixed TBD/ PEDOT functionalized graphene electrode integrated on a silicon substrate for the simultaneous detection and assay of UA and AA. The catalytic chemical vapour deposition (CVD) synthesis of graphene on either platinum (Pt) foils or thin films will be detailed, together with its electrochemical functionalization by both TBD salt grafting and EDOT electropolymerization. The characterization of the resulting modified electrodes by ...