Nanotube electrochemistry
AssigneeUniversity of Warwick
InventorsJulie Victoria Macpherson, Patrick Robert Unwin, Mark Newton
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Abstract
The invention relates to electrodes for electrochemical analysis comprising: —an insulating surface; —carbon nanotubes situated on the insulating surface at a density of at least 0.1 μmCNT Um−2; and—an electrically conducting material in electrical contact with the carbon nanotubes; wherein the carbon nanotubes cover an area of no more than about 5.0% of the insulating surface. Methods of making such electrodes and assay devices or kits with such electrodes, are also provided.
Claims24
An electrode for electrochemical analysis, comprising:
- an insulating surface;
- carbon nanotubes situated on the insulating surface at a density of at least 0.1 μmCNT μm−2;
- and
- an electrically conducting material in electrical contact with the carbon nanotubes;
- wherein the carbon nanotubes cover an area of no more than about 1.0% of the insulating surface.
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The electrode according to claim 3, wherein the polymers are selected from ion-exchange polymers, conducting polymers, and redox polymers, the oxido-reductase enzymes are selected from glucose oxidase, cholesterol oxidase, and nicotinamide adenine dinucleotide, and the dopant is ferrocene.
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A method of electrochemically analysing a solution, comprising:
- providing an insulating surface having carbon nanotubes situated thereon at a density of at least 0.1 μmCNT μm−2, and an electrically conducting material in electrical contact with the carbon nanotubes, wherein the carbon nanotubes cover an area of no more than about 1.0% of the insulating surface;
- bringing a sample of the solution into contact with the carbon nanotubes;
- and
- applying a potential across the electrode to electrochemically analyse the sample,
- wherein the solution has a concentration of no more than about 100 μM.
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Dependencies are inferred from the claim text.