Method of making an electrochemical sensor strip
First Claim
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1. A method of making an electrochemical sensor strip, the method comprising:
- depositing a first electrode on a base;
depositing a second electrode on the base;
applying a first reagent layer onto the first electrode, the first reagent layer comprising an electroactive organic molecule and an oxidoreductase configured to facilitate a redox reaction of an analyte; and
applying a second reagent layer onto the second electrode, the second reagent layer consisting essentially of a redox pair comprising a first soluble redox species and a second soluble redox species, the redox pair being selected from a group consisting of an organotransition metal complex, a transition metal coordination complex, and mixtures thereof,wherein the first soluble redox species is configured to undergo a redox reaction opposite that of the analyte, andwherein the molar ratio of the first soluble redox species to the second soluble redox species is greater than about 1.2;
1 prior to use of the sensor strip in an analysis.
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Abstract
A method of making an electrochemical sensor strip that includes: depositing a first electrode on a base; depositing a second electrode on the base; applying a first layer onto the first electrode; and applying a second layer onto the second electrode. The first layer includes an oxidoreductase and a mediator. The second layer includes a soluble redox species.
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Citations
23 Claims
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1. A method of making an electrochemical sensor strip, the method comprising:
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depositing a first electrode on a base; depositing a second electrode on the base; applying a first reagent layer onto the first electrode, the first reagent layer comprising an electroactive organic molecule and an oxidoreductase configured to facilitate a redox reaction of an analyte; and applying a second reagent layer onto the second electrode, the second reagent layer consisting essentially of a redox pair comprising a first soluble redox species and a second soluble redox species, the redox pair being selected from a group consisting of an organotransition metal complex, a transition metal coordination complex, and mixtures thereof, wherein the first soluble redox species is configured to undergo a redox reaction opposite that of the analyte, and wherein the molar ratio of the first soluble redox species to the second soluble redox species is greater than about 1.2;
1 prior to use of the sensor strip in an analysis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of making an electrochemical sensor strip, the method comprising:
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depositing a first electrode on a base; depositing a second electrode on the base; applying a first reagent layer onto the first electrode, the first reagent layer comprising an electroactive organic molecule and an enzyme selected from a group consisting of glucose oxidase, glucose dehydrogenase, and mixtures thereof; and applying a second reagent layer onto the second electrode, the second reagent layer consisting essentially of a redox pair comprising a first soluble redox species and a second soluble redox species, the redox pair being selected from a group consisting of an organotransition metal complex, a transition metal coordination complex, and mixtures thereof, wherein the first soluble redox species is a reducible species and the second soluble redox species is an oxidizable species, and wherein the molar ratio of the first soluble redox species to the second soluble redox species is greater than about 1.2;
1 prior to use of the sensor strip in an analysis.
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Specification