OXYGEN-EFFECT FREE ANALYTE SENSOR
First Claim
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1. An electrochemical sensor, comprising:
- at least one substrate comprising a working electrode and a counter electrode;
an dehydrogenase disposed on the working electrode, wherein the dehydrogenase reacts with an analyte of interest resulting in generation of free electrons; and
a redox mediator disposed proximate to the working electrode that assists in the transfer of the free electrons to the working electrode, wherein the redox mediator comprises a transition metal complex having the following formula;
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Abstract
The present invention provides an electrochemical sensor having a sensing chemistry that operates substantially free of any “oxygen effect”. The electrochemical sensors are useful in determining the level of an analyte in a biological sample from a subject. The present invention also provides sensor assemblies including the electrochemical sensors as well as methods of using the same.
270 Citations
50 Claims
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1. An electrochemical sensor, comprising:
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at least one substrate comprising a working electrode and a counter electrode; an dehydrogenase disposed on the working electrode, wherein the dehydrogenase reacts with an analyte of interest resulting in generation of free electrons; and a redox mediator disposed proximate to the working electrode that assists in the transfer of the free electrons to the working electrode, wherein the redox mediator comprises a transition metal complex having the following formula; - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An analyte sensor assembly, comprising:
an electrochemical sensor comprising; at least one substrate comprising a working electrode and a counter electrode, a working electrode comprising a dehydrogenase disposed thereon, wherein the dehydrogenase reacts with an analyte of interest resulting in generation of free electrons; and a redox mediator disposed proximate to the working electrode that assists in the transfer of the free electrons to the working electrode, wherein the redox mediator comprises a transition metal complex having the following formula; - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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