Electrochemical-based sensor with a redox polymer and redox enzyme entrapped by a dialysis membrane
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United States of America Patent
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Aug 11, 2009
Grant Date -
Mar 2, 2006
app pub date -
Aug 31, 2004
filing date -
Aug 31, 2004
priority date (Note) -
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Abstract
An electrochemical-based sensor includes an electrode with at least one electrode surface, a film disposed on the electrode surface, and a dialysis membrane disposed on the film. The film includes a redox enzyme and a hydrophilic redox polymer (i.e., a polymer with an attached redox mediator(s)). In addition, the dialysis membrane serves to entrap the redox polymer and redox enzyme in the vicinity of the electrode. Such entrapment is accomplished by employing a redox enzyme and a hydrophilic redox polymer of a sufficiently high molecular weight that they do not pass through the dialysis membrane.
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