Ion sensor
AssigneeTerumo Kabushiki Kaisha
InventorsShuichiro Yamaguchi, Norihiko Ushizawa, Takeshi Shimomura, Noboru Oyama
Life of this patent
Estimating the term…
Abstract
An ion sensor of the type wherein a specific type of ion in an aqueous solution is measured by potential response. The sensor includes a conductor base, and a reversible redox polymer film formed directly on a surface of said conductor base. An ion carrier film is formed directly on a surface of said redox polymer film. The carrier film contains an ion carrier substance for allowing the specific type of ions to permeate from the aqueous solution to said polymer film.
Claims33
An ion sensor wherein a specific type of ion in an aqueous solution is measured by potential response, comprising:
- a conductor base;
- a reversible redox polymer film formed directly on a surface of said conductor base;
- and
- an ion carrier film formed directly on a surface of said redox polymer film and containing an ion carrier substance for allowing the specific type of ions to permeate from the aqueous solution to said polymer film;
- wherein said conductor base is made of a conductive carbon compound;
- and
- wherein said redox polymer film is capable of performing a reversible oxidation/reduction reaction of quinone-hydroquinone, and is formed by electrooxidation polymerization of at least one first compound selected from the group consisting of phenol, 3,5-, 2,6- and 3,4-xylenols, 2-hydroxy pyridine, o- and m-benzyl alcohols, o-, m- and p-hydroxybenzaldehydes, o-, m- and p-hydroxyacetophenones, o-, m- and p-hydroxypropiophenones, o-, o-, m- and p-benzophenols, o-, m- and p-hydroxybenzophenones, o-, m- and p-carboxyphenols, diphenylphenol, 2-methyl-8-hydroxyquinoline, 5-hydroxy-1,4-naphthoquinone, 4-(p-hydroxyphenyl)-2-butanone, 1,5-dihydroxy-1,2,3,4-tetrahydronaphthalene, bisphenol A, salicylanilide, 5- and 8-hydroxyquinolines, 1,8-dihydroxyanthraquinones, 1,2,5,8-tetrahydroxyquinalizarin, 1-amino-4-hydroxyanthraquinone, 1-aminoanthraquinone, purpurin, and anthrarufin.
An ion sensor wherein a specific type of ion in an aqueous solution is measured by potential response, comprising:
- a conductor base;
- a reversible redox polymer film formed directly on a surface of said conductor base;
- and
- an ion carrier film formed directly on a surface of said redox polymer film and containing an ion carrier substance for allowing the specific type of ions to permeate from the aqueous solution to said polymer film;
- wherein said conductor base is made of a conductive carbon compound;
- and
- wherein said redox polymer film is capable of performing a reversible oxidation/reduction reaction of amine-quinoid, and formed by electrooxidation polymerization of at least one first compound selected from the group consisting of aniline, 1-aminopyrene, 1,2-, 1,6- and 1,8-diaminopyrenes, 1-9, 10-diaminophenanthrenes, 1-aminoanthraquinone, p-phenoxyaniline, o-phenylenediamine, p-chloroaniline, 3,5-dichloroaniline, 2,4,6-trichloroaniline, N-phenyl-p-phenylenediamine, and N-methylaniline.
Dependencies are inferred from the claim text.