EP3766117A1 - Bioélectrode nanostructurée pour l'oxydation du glucose à partir de composés aromatiques électrogénérés - Google Patents
Bioélectrode nanostructurée pour l'oxydation du glucose à partir de composés aromatiques électrogénérésInfo
- Publication number
- EP3766117A1 EP3766117A1 EP19711899.5A EP19711899A EP3766117A1 EP 3766117 A1 EP3766117 A1 EP 3766117A1 EP 19711899 A EP19711899 A EP 19711899A EP 3766117 A1 EP3766117 A1 EP 3766117A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- glucose
- pyrene
- electrode
- bioelectrode
- oxidation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/16—Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/0004—Oxidoreductases (1.)
- C12N9/0006—Oxidoreductases (1.) acting on CH-OH groups as donors (1.1)
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/001—Enzyme electrodes
- C12Q1/005—Enzyme electrodes involving specific analytes or enzymes
- C12Q1/006—Enzyme electrodes involving specific analytes or enzymes for glucose
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
- G01N27/3271—Amperometric enzyme electrodes for analytes in body fluids, e.g. glucose in blood
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/8647—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites
- H01M4/8657—Inert electrodes with catalytic activity, e.g. for fuel cells consisting of more than one material, e.g. consisting of composites layered
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/90—Selection of catalytic material
- H01M4/9008—Organic or organo-metallic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y101/00—Oxidoreductases acting on the CH-OH group of donors (1.1)
- C12Y101/99—Oxidoreductases acting on the CH-OH group of donors (1.1) with other acceptors (1.1.99)
- C12Y101/9901—Glucose dehydrogenase (acceptor) (1.1.99.10)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a nanostructured bioelectrode from electrogenerated aromatic compounds as well as the use of these electrogenerated aromatic compounds as a mediator particularly suitable for the transfer of electrons between a glucose oxidation catalyzing enzyme such as Flavine.
- biofuels biofuel cells
- enzymes biocatalysts, called enzymes, to perform an oxidation reaction of a fuel (H 2 , alcohols, glucose, ...) at the anode and the reduction of an oxidant (mainly 0 2 ) at the cathode.
- the advantage of the use of enzymes for the production of energy is their high selectivity with respect to the substrate.
- the enzyme FAD-GDH has the properties of oxidizing glucose to gluconic acid. This enzyme has an active site within its structure: therefore direct electron transfer is impossible and it is necessary to use a redox mediator to transfer electrons from the enzyme to the electrode.
- Several approaches are described for the immobilization of the redox mediator within the electrode such as encapsulation, polymerization, covalent grafting. These studies generally show immobilization of the mediator in a state that is already active.
- Barathi et al. (B arathi, P, Senthil Kumar, A. Electrochemical Conversion of a Pyrene to Highly Active Redox Activates 1,2-Qulnone Derivatives on a Carbon Nanotube-Modified Gold Electrode Surface and Its Selective Hydrogen Peroxide Sensing., Langmuir 2013, 29 (34), 10617-10623) describes a method of degradation of pyrene to an active quinone derivative. The compound is deposited under form of pyrene inactive on the electrode then activated (oxidized) by electrochemistry. Barathi et al. also describes the use of such an electrode on which is also deposited a cytochrome C and copper (Cu 2+ ). This electrode is used as a cathode for the reduction of oxygenated water.
- the present invention relates to the identification and use of a redox mediator particularly suitable for the manufacture of a bioanode for enzymatic biopile, in particular an enzymatic biopile comprising a FAD-GDH.
- This mediator has a much better stability over time compared to redox mediators conventionally used such as 1, 4 naphthoquinone.
- one aspect of the invention is a bioelectrode comprising a conductive material on the surface of which are deposited carbon nanotubes, a redox mediator based on pyrene, or one of its derivatives, oxidized in situ and an enzyme capable of catalyze the oxidation of glucose.
- glucose refers in particular to the enantiomer D - (+) - glucose (dextrose) which is naturally present in living organisms.
- the electrode according to the invention is preferably of the multilayer type and advantageously comprises a layer of carbon nanotubes, an oxidized pyrene layer in situ and an enzyme layer capable of catalyzing the oxidation of glucose.
- the layers may be successively deposited on a conductive material, which may constitute the support of these layers or may itself be deposited on an inert support.
- the conductive material may be vitreous carbon, pyrolytic graphite (in particular HOPG "Highly Ordered Pyrolytic Graphite") gold, platinum and / or indium oxide and tin.
- the material is vitreous carbon or pyrolytic graphite.
- the use of carbon nanotubes makes it possible to increase the specific surface area of the electrode (porosity) and the formation of a nanostructured 3D network and also makes it possible to ensure the conductivity within the material with its p conjugated system which allows a strong non-covalent interaction with aromatic oligomers.
- the ratio of specific surface area to the number of redox molecules is relatively high and allows the absence of passivation during the electrosynthesis step. Indeed, it is conventionally accepted that the electropolymerization of an organic molecule on electrodes induces a passivation resulting in a decrease in the electron transfer rate.
- the porous electrodes based on carbon nanotubes (CNT) are produced using commercial, preferably nonfunctional, multiwall carbon CNTs.
- GDL Gas Diffusion Layer
- Carbon nanotubes are fullerenes composed of one or more layers of carbon atoms wound on themselves forming a tube.
- the tube may or may not be closed at its ends by a half-sphere.
- Single-walled carbon nanotubes SWNT or SWCNT, for Single-Walled (Carbon) Nanotubes
- MWNT or MWCNT for Multi-Walled (Carbon) Nanotubes
- the combination of the conductive material and carbon nanotubes which can advantageously be deposited on said material in the form of a layer, makes it possible to obtain a porous support capable of receiving the enzyme and its particular mediator (oxidized pyrene in situ). ).
- pyrene derivative denotes a molecule comprised in the group consisting of pyrene where at least one hydrogen atom present on the aromatic polycyclic carbonaceous structure of pyrene is substituted with at least one C2-C22 alkyl group, and in particular by a C 2 -C 4 alkyl group, such as ethyl, propyl or butyl. It is also advantageous to avoid using pyrene derivatives comprising amine or hydroxyl groups, or alternatively halogen atoms.
- Pyrene, or one of its derivatives, oxidized in situ is an organic compound derived from pyrene or a derivative thereof, which has been deposited on the electrode. Once deposited on the surface of the electrode, the oxidation of pyrene or its derivative can be carried out either by cyclic voltammetry or by chronoamperometry.
- the compounds formed are one or more types of electroactive quinoid oxide (s). Pyrene, or one of its derivatives, oxidized in situ acts as a redox mediator of the enzyme which is part of the bioelectrode according to the invention.
- the mediator obtained in situ can in particular be obtained by chronoamperometry and include the application to pyrene, or to one of its derivatives, deposited in situ on the surface of the electrode, with a potential of 1 V at said electrode for a given time, preferably from 10 seconds to 3 minutes, advantageously from 30 seconds to 3 minutes.
- the pyrene, or one of its derivatives, oxidized in situ can be obtained by cyclic voltammetry and comprises the application to pyrene, or to one of its derivatives, deposited in situ on the surface of the electrode with a cyclically varying potential of -0.4V to 1 V.
- the number of cycles applied during this step varies from 3 to 20.
- the enzyme capable of catalyzing the oxidation of glucose is preferably a Glucose Dehydrogenase (GDH) catalyzing reaction:
- the acceptor, or co-factor is generally a NAD7NADP + or flavin type coenzyme, such as FAD (Flavin Adenine Dinucleotide), or FMN (Flavin mononucleotide) which is linked to GDH.
- FAD Fluor Adenine Dinucleotide
- FMN Fluor mononucleotide
- a particularly preferred glucose dehydrogenase is Flavin Adenine Dinucleotide-Glucose Deshydrogenase (FAD-GDH) (EC 1.1.5.9).
- FAD-GDH Flavin Adenine Dinucleotide-Glucose Deshydrogenase
- FAD-GDH extends to native proteins and their derivatives, mutants and / or functional equivalents. This term extends in particular to proteins which do not differ substantially in structure and / or enzymatic activity.
- an enzymatic protein GDH having an amino acid sequence having at least 75%, preferably 95%, and even more preferably 99% identity.
- GDH sequence as listed in the databanks (eg SWISS PROT).
- FAD-GDH of Aspergillus sp. is particularly preferred and effective but other FAD-GDH from Glomerella cingulata (GcGDH), or a recombinant form expressed in Pichia pastoris (rGcGDH), could also be used.
- glucose oxidase GOx, GOD
- EC 1.1.3.4 glucose oxidase oxidoreductase enzyme
- FAD Fevin Adenine Dinucleotide
- a particularly preferred glucose oxidase is Flavin Adenine Dinucleotide Glucose Oxidase (FAD-GOx). This term extends to native proteins and their derivatives, mutants and / or functional equivalents.
- FAD-GOx extends in particular to proteins which do not substantially differ in structure and / or enzymatic activity.
- a GOx enzyme protein having an amino acid sequence having at least 75%, preferably 95%, and even more preferably 99%, of amino acids can be used. identity with the GOx sequence (s) as listed in the databanks (eg SWISS PROT). FAD-GOx extracted from Aspergillus niger is particularly preferred.
- FAD-GDH has a higher activity than glucose oxidase and therefore a higher catalytic current. This is of great interest in order to increase the powers generated in the enzymatic biopiles. It should be noted that unlike Glucose Oxidase, the enzyme FAD-GDH does not produce hydrogen peroxide. Hydrogen peroxide because of its oxidizing properties may have disadvantages for the stability of the biopiles (membrane, stability of the enzymes at the cathode, ).
- Another aspect of the invention relates to a method for manufacturing a bioelectrode suitable for the oxidation of glucose, said method comprising:
- a pyrene oxidation step or a derivative thereof, said pyrene or said derivative being previously deposited on the surface of a conductive material, a conductive material on the surface of which carbon nanotubes are also deposited, and
- step b) a step, preferably subsequent to step a), of depositing an enzyme capable of catalyzing the oxidation of glucose on the surface of said electrode.
- bioelectrode according to the method of the invention are advantageously as described above.
- the nanotubes are deposited on the conductive material by a so-called dropcasting step.
- a homogeneous solution or dispersion of a product is deposited on a support, then a step of evaporation of the solvent is carried out which allows the deposition of a thin layer of said product on said support.
- the solvent is an organic solvent except for the enzyme.
- the solvent chosen may be N-methyl-2 pyrrolidone (NMP).
- NMP N-methyl-2 pyrrolidone
- concentration of the solution / dispersion of nanotubes can vary from 1 to 10 mg.mL 1 , preferably around 5 mg.mL 1 .
- the electrode of conductive material is oriented vertically during the deposition of the nanotubes.
- the pyrene oxidation step is carried out by chronoamperometry and may comprise applying a 1 V potential to said surface for a given time, preferably ranging from 10 seconds to 3 hours. minutes, preferably 30 seconds to 3 min.
- the pyrene oxidation step is carried out by cyclic voltammetry and may include the application of a cyclically-varying potential of -0.4V to 1V on the surface of the electrode.
- the number of cycles applied varies from 3 to 20 for a scanning speed of 100m Vs 1 .
- the electrolytic solution that can be used for the chronoamperometry step and / or cyclic voltammetry may be a buffer solution, for example phosphate.
- the pH of the electrolytic solution is generally from 6.5 to 7.5, preferably around 7, because of an optimal enzymatic activity around 7.
- the pyrene is deposited on a surface of the electrode comprising carbon nanotubes also using a dropcasting step.
- the solvent is advantageously dichloromethane.
- the concentration of the solution can be chosen from 5 to 15 mM, in particular around 10 mM.
- the enzyme used is a Flavine Adenine Dinucleotide - glucose dehydrogenase or a Flavine Adenine Dinucleotide - glucose oxidase, as described above.
- the step of depositing the enzyme on the surface of the bioelectrode is also carried out using a dropcasting step.
- the solvent is advantageously an aqueous solution, preferably buffered to pH 7.
- the concentration of the solution may be from 1 to 10 mg.mL 1 , preferably 5 mg.mL 1 .
- Deposition and / or evaporation of the solvent can advantageously be carried out at atmospheric pressure and at room temperature.
- the drying time is usually chosen from 2 to 4 hours.
- the invention also relates to a bioelectrode obtained directly by the process according to the invention as described above as well as in the implementation examples below.
- the invention also relates to the applications and uses of such an electrode in various technologies.
- the invention also relates to the use of a bioelectrode according to the invention as a bioanode suitable for the manufacture of a biopile.
- a biopile is advantageously an enzymatic fuel biopile.
- Such a biopile includes in association with at least one electrode according to the invention a biocathode.
- This biocathode may for example comprise an enzyme for reducing oxygen, for example based on bilirubin oxidase or Laccase.
- It may comprise, as conductive material, a material of the type as described above and advantageously protoporphyrin-modified carbon nanotubes enabling direct electronic transfer with bilirubin oxidase.
- these carbon nanotubes are advantageously modified with a hydrophobic group such as adamantane, anthracene or pyrene.
- a mediated electron transfer can also be obtained from MWCNT and the ABTS molecule for both enzymes.
- Another use of the electrode according to the invention relates to its use in a glucose biosensor.
- the invention also relates to the use of a pyrene derivative as described above, in place of or in combination with pyrene.
- the substituted pyrene derivative may also be oxidized in situ using the steps described above and the glucose electrodes and cells and biosensor, as well as their methods of manufacture are also an object of the invention.
- (B) Represents the intensities of the anodic and cathodic peaks of a vitreous carbon / MWCNT / pyreneRedox electrode as a function of the scanning rate.
- FIG. 3 (A) Voltammograms of a vitreous carbon electrode / MWCNT / pyreneRedox at different pH (2, 3, 4, 5, 6, 7, 8)
- a commercial 0.071 cm 2 carbon glass electrode (sold by Bio-Logic, France) is modified by adding carbon nanotubes (suspension at 5 mg.mL 1 in carbon nanotubes).
- This suspension is carried out by adding 10 mg of non-functionalized multiwall wall nanotubes (MWCNT Nanocyl TM, 97%) in 2 ml of NMP (N-methyl-2-pyrrolidone). The dispersion is placed under ultrasonic agitation for 2 hours. 20 ⁇ l of this suspension of previously stirred MWCNT are then deposited on the surface of the vitreous carbon electrode.
- MWCNT Nanocyl TM non-functionalized multiwall wall nanotubes
- NMP N-methyl-2-pyrrolidone
- the electrode is then placed under vacuum in a desiccator.
- the electrode is then removed from the desiccator when the solvent is evaporated and the carbon nanotubes are dry (on average a few hours, generally from 3 to 5 hours).
- the electrode After functionalization of the electrode by the carbon nanotubes, it is modified by the addition of 20 ⁇ l of a solution containing 10 mM of pyrene dissolved in dichloromethane (conc 5 mg / mL). The solvent is then evaporated at atmospheric pressure (about 100 kPa) and at room temperature (about 25 ° C).
- the electrode modified with pyrene is placed in an electrolytic solution (0.2 M Na 2 HPO 4 phosphate buffer and 0.2 M NaH 2 PO 4 of pH 7) previously degassed under argon.
- the electrode is then subjected by chronoamperometry to a current of 1 V using as a counter electrode a platinum electrode and an Ag / AgCl type reference electrode for 30 seconds.
- the electrode is then rinsed with distilled water to remove any traces of carrier electrolyte or organic molecules.
- the FAD-GDH used in this example is a FAD-GDH of Aspergillus sp. (SEKISUI DIAGNOSTICS, Lexington, MA, GLDE Catalog Number - 70 - 1192) which has the following characteristics:
- Solubility Dissolves easily in water at a concentration of: 10mg / mL.
- One unit of activity amount of enzyme that will convert one micromole of glucose per minute to 37 ° C.
- K m value 5.10 2 M (D-Glucose).
- D-Xylose has 11%, D-galactose 0.7%, D-Mannose 0.4%, D-Trehalose 0.2% and D-Fructose 0.1%, activity compared to that D-Glucose.
- L-Glucose, D-Mannitol, D-Lactose, D-Sorbitol, D-Ribose, D-Maltose and D-Sucrose each have less than 0.1% activity compared to D -Glucose.
- a solution of 5 mg.mL 1 of FAD-GDH is prepared in a buffer solution (0.2 M Na 2 HPO 4 phosphate buffer and 0.2 NaH 2 PO 4 pH 7) and stored at -20 ° C. Before each deposit, the solution is removed from the freezer and thawed. 20 ⁇ L of this solution are deposited by dropcasting on the modified electrode. The solvent is then evaporated at atmospheric pressure (about 100 kPa) and at room temperature (about 25 ° C).
- the bioanode obtained is used in a standard electrolytic cell (with a platinum counter electrode and an Ag / AgCl reference electrode) to constitute a cell when positioned in a glucose-concentrated medium.
- This cell is studied below has the following characteristics:
- Figure 1 shows the electrochemical response of a glassy carbon electrode coated with carbon nanotubes and pyrene.
- the black curve represents the electrochemical response of the electrode, only a capacitive current is observed corresponding to the contribution of the carbon nanotubes.
- the gray curve was recorded after imposing a potential of 1 V for 30 seconds. A faradic signal is observed at a potential of -0.036 V vs. Ag / AgCl. The application of a potential of 1 V thus induces the synthesis of a new species presenting redox properties.
- Diagram 1 Mechanism assumed during the oxidation of pyrene 2. Characterization of the redox signal
- the electrochemical response of the generated electro-redox electrode is characteristic of a species immobilized at an electrode DE close to OmV (10 mV to 2mV.s 1 ) and peak intensity of oxidation and reduction proportional to the scanning speed. ( Figure 2).
- the supposed formed product is 1,6-pyrenedione or 1,4-pyrenedione.
- the electrogenerated redox couple is thus pyrenedione / dihydroxypyrene with an exchange with 2 electrons and 2 protons.
- the literature eg P. Barathi, Senthil Kumar, Langmuir, 29 (2013) 10617-10623, aroused
- Figure 4 shows the electrochemical response of the bioanode described above (MWCNT / pyreneRedox / FAD-GDH) in the absence and in the presence of glucose.
- the black curve in the absence of glucose shows only the reversible electrochemical response of the immobilized redox probe.
- an oxidation wave is observed and characteristic of a catalytic activity.
- the catalytic current occurs at the potential of the redox probe. This shows that the electrogenerated redox probe makes it possible to ensure a mediated electron transfer between the electrode and the enzyme FAD-GDH.
- the figure on the right shows the evolution of the current when adding increasing amounts of glucose.
- Figure 5 shows the electrochemical response of the oxygenated anthracene derivative after activation by cyclic voltammetry.
- the signature exactly matches that of anthraquinone, a commercial product.
- the figure on the right shows the electrosynthesis of a perylene derivative under the same conditions. It is very probably a perylenequinone but such derivatives are not marketed which does not allow to determine the exact structure.
- the potential of these two components ( ⁇ -0.5 V for anthraquinone and ⁇ -0.2 for perylenequinone) does not allow electron transfer with FAD-GDH.
- Figure 6 shows the electrochemical response of the oxygenated phenanthrene derivative after activation by cyclic voltammetry. This shows an electron transfer after electro-oxidation. The signature exactly matches that of phenantraquinone, a commercial product. The catalytic current nevertheless remains low (a few tens of mA) compared to the electro-oxidized pyrene (several hundred of mA).
- Figure 7 shows the comparison of a pyrenedione electrode (according to the invention) with a 1,4 naphthoquinone electrode by cyclic voltammetry in terms of the efficiency and stability of the electron transfer.
- a pyrenedione electrode according to the invention
- a 1,4 naphthoquinone electrode by cyclic voltammetry in terms of the efficiency and stability of the electron transfer.
- the pyrene unit In the case of the pyrene unit, it has certain advantages for use in bioanodes as a redox mediator for FAD-GDH.
- the product is easily electrosynthesized and has a fast electronic transfer.
- the redox potential of the pyrene-quinone pyrene-dihydroquinone pair has a potential close to the redox potential of the active site of the enzyme.
- a catalysis current is observed ( Figure 7A).
- the maximum catalytic currents obtained for an MWCNT / pyrene-quinone IFAD-GDH electrode are 1.4 mA.
- This catalytic wave appears at potentials close to the redox potential of the FAD-GDH and thus makes it possible to obtain high open circuit potentials (OCV) in the case of the integration of this bioanode into a biopile-type device.
- OCV is a crucial parameter for obtaining devices delivering high powers.
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Abstract
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR1852284A FR3079073B1 (fr) | 2018-03-16 | 2018-03-16 | Bioelectrode nanostructuree pour l'oxydation du glucose a partir de composes aromatiques electrogeneres |
PCT/EP2019/056628 WO2019175426A1 (fr) | 2018-03-16 | 2019-03-15 | Bioélectrode nanostructurée pour l'oxydation du glucose à partir de composés aromatiques électrogénérés |
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EP3766117A1 true EP3766117A1 (fr) | 2021-01-20 |
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EP19711899.5A Pending EP3766117A1 (fr) | 2018-03-16 | 2019-03-15 | Bioélectrode nanostructurée pour l'oxydation du glucose à partir de composés aromatiques électrogénérés |
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US (1) | US20210050613A1 (fr) |
EP (1) | EP3766117A1 (fr) |
CA (1) | CA3093571A1 (fr) |
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WO (1) | WO2019175426A1 (fr) |
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EP4040150A1 (fr) * | 2021-02-04 | 2022-08-10 | Centre national de la recherche scientifique | Procédé de détection d'hydrocarbures aromatiques polycycliques |
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US6294281B1 (en) | 1998-06-17 | 2001-09-25 | Therasense, Inc. | Biological fuel cell and method |
FR2958801B1 (fr) | 2010-04-08 | 2012-05-25 | Univ Joseph Fourier | Biopile a glucose |
US9827517B2 (en) * | 2011-01-25 | 2017-11-28 | President And Fellows Of Harvard College | Electrochemical carbon nanotube filter and method |
US10050296B2 (en) * | 2013-01-11 | 2018-08-14 | Stc.Unm | Highly efficient enzymatic bioanodes and biocathodes |
EP3249050B1 (fr) * | 2016-05-23 | 2019-01-23 | ARKRAY, Inc. | Électrode à enzyme et biodétecteur l'utilisant |
CN106409538B (zh) * | 2016-10-20 | 2018-09-28 | 青岛大学 | 一种生物质能量转化和储存的集成器件及其制备方法 |
FR3060859B1 (fr) * | 2016-12-21 | 2019-05-31 | Centre National De La Recherche Scientifique | Bio-electrode pour la detection et/ou l'oxydation du glucose et son procede de fabrication et dispositif la comprenant. |
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2018
- 2018-03-16 FR FR1852284A patent/FR3079073B1/fr active Active
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2019
- 2019-03-15 US US16/981,214 patent/US20210050613A1/en active Pending
- 2019-03-15 WO PCT/EP2019/056628 patent/WO2019175426A1/fr active Application Filing
- 2019-03-15 EP EP19711899.5A patent/EP3766117A1/fr active Pending
- 2019-03-15 CA CA3093571A patent/CA3093571A1/fr active Pending
Also Published As
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WO2019175426A1 (fr) | 2019-09-19 |
CA3093571A1 (fr) | 2019-09-19 |
US20210050613A1 (en) | 2021-02-18 |
FR3079073A1 (fr) | 2019-09-20 |
FR3079073B1 (fr) | 2024-03-01 |
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