Enzyme sensor
First Claim
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1. An enzyme sensor characterized by comprising:
- an insulating substrate;
an electrically conductive layer coating said insulating substrate;
a redox layer having an oxidation-reduction function formed on a surface of said electrically conductive layer by an electrolytic oxidative polymerization process; and
an enzyme-fixed layer coating a surface of said redox layer and having an enzyme fixed thereto.
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Abstract
PCT Filed Nov. 19, 1987 PCT Pub. No. WO88/04050 PCT Pub. Date Jun. 2, 1988.
An insulative substrate (1) is coated with an electrically conductive layer (2) and a redox layer (3) which comprises an electrolytic polymerization film of 2,6-dimethylphenol, and the surface of the redox layer is provided with an enzyme-fixed (7). The enzyme electrode thus obtained exhibits a potentiometric response, and the enzyme-fixed layer has a strong adhesion. As a result, sensitivity is high, there is little drift and service life is prolonged. An ion-selective field-effect transistor can be used instead of the insulative substrate (1).
289 Citations
12 Claims
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1. An enzyme sensor characterized by comprising:
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an insulating substrate; an electrically conductive layer coating said insulating substrate; a redox layer having an oxidation-reduction function formed on a surface of said electrically conductive layer by an electrolytic oxidative polymerization process; and an enzyme-fixed layer coating a surface of said redox layer and having an enzyme fixed thereto. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An enzyme sensor characterized by comprising:
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a MOSFET; an electrically conductive layer coating a gate insulating film of said MOSFET; a redox layer having an oxidation-reduction function formed on a surface of said electrically conductive layer by an electrolytic oxidative polymerization process; and an enzyme-fixed layer coating a surface of said redox layer and having an enzyme fixed thereto. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification