Ultramicroelectrode, process for making same and its application
First Claim
1. In an electrode having a wire made of noble metal and/or carbon and an insulating layer applied thereon, the improvement wherein said insulating layer is made from a compound selected from the group consisting of substituted poly(1,4-phenylene) ethers, poly(1,4-phenylene) thioethers and poly(1,4-aniline)s, whose plurality of phenyl groups are cross-linked at their ortho-positions by alkylene groups with from two to ten carbon atoms.
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Accused Products
Abstract
The ultramicroelectrode comprises a wire or filament of noble metal and/or carbon on which an insulating layer is provided. The insulating layer is made from a cross-linked alkenyl-substituted poly(1,4-phenylene) ether, poly(1,4-phenylene) thioether or poly(1,4-aniline). This ultramicroelectrode can be used as a disk, cylindrical, bipolar or shielded electrode and may be used as a stimulating electrode, amperometric or potentiometric microsensor or as an electrode for analytical measurement, e.g. for inverse voltammetry.
30 Citations
33 Claims
- 1. In an electrode having a wire made of noble metal and/or carbon and an insulating layer applied thereon, the improvement wherein said insulating layer is made from a compound selected from the group consisting of substituted poly(1,4-phenylene) ethers, poly(1,4-phenylene) thioethers and poly(1,4-aniline)s, whose plurality of phenyl groups are cross-linked at their ortho-positions by alkylene groups with from two to ten carbon atoms.
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11. A process for making an electrode comprising a wire made of a noble metal or carbon and an insulating layer thereon comprising the steps of:
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a. depositing a polymer layer anodically on said wire made of said noble metal and/or carbon by electrochemical polymerization of monomers selected from the group consisting of phenol-, thiophenol-, aniline-containing monomers and their combinations, which contain in an ortho-position unsaturated aliphatic groups with 2 to 10 carbon atoms, from an electrolytic bath having an alkaline medium, which contains an amine and an adhesion promoting agent; and b. cross-linking said polymer layer to form said insulating layer. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification