Solid state ion sensor with polyurethane membrane

Details Solid state ion sensor with polyurethane membrane Solid state ion sensor with polyurethane membrane

G - Physics

01

N

G01N 27/30 (2006.01) G01N 27/333 (2006.01) G01N 27/414 (2006.01)

Patent

CA 2081914

2081914 9117432 PCTABS00008 A polyurethane matrix is employed to form a substance-sensitive membrane which is particularly suited for installation on a solid state sensor. The ionophore may be a potassium ionophore, an ammonium ionophore, or any other ionophore may be coupled to the molecule of interest through a bioactive agent, such as an enzyme, an immuno-chemical, bacteria, antibody, virus, or antigen. The resulting substance-sensitive membrane has electrochemical properties which compare favorably to those of conventional PVC membranes, and exhibit significantly greater adhesion to glasses and semiconductor substrate materials. The improved adhesion will prolong the life of the sensors and prevent the formation of electrolyte shunts which have been known to render solid state sensors inoperative.

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