摘要:
A redox active reversible electrode includes a conductive substrate and a redox active film formed on at least one surface of the conductive substrate. The redox active film contains a redox active sulfur compound and an electrically conductive polymer of a π electron conjugated compound having p-type doping characteristics.
摘要:
A method of producing a polymer of a sulfur-containing aromatic compound includes reacting, under heating, a halide of a sulfur-containing aromatic compound having at least one aromatic ring and at least one ring containing one or more disulfide bonds wherein one side of the disulfide-containing ring constitutes one side of the aromatic ring, with inorganic sulfur in an amount equivalent to 2 to 8 S atoms relative to 1 mol of the halide of the sulfur-containing aromatic compound in the presence of at least one inorganic base selected from the group consisting of an alkali metal hydroxide, an alkali metal hydrogen carbonate and an alkali metal carbonate and/or at least one organic base selected from the group consisting of a tri(lower alkyl)amine and a heterocyclic amine in an organic solvent.
摘要:
A film-coated sensor is formed by providing an electrically conductive substrate (2), which has a sectional area of less than 10.sup.-5 cm.sup.2, connected to a lead wire (5) at one end of an insulative capillary (1) and inscribed in the capillary (1), and providing a coating film (7) at another end, which is open, of the capillary (1) by an electrolytic polymerization process.The film-coated sensor obtained has a surface which is uniform, the film coating is easy to control, and since the sensor is not readily susceptible to flow of a specimen fluid, there is little drift and response is quick. Owing to its small size, the sensor is capable of measuring very small samples and of performing measurement upon being directly inserted into a living body or tissue.The sensor can be used also as an enzyme sensor by coating the surface of the film-coated sensor with a fixing enzyme film.
摘要:
A redox-active reversible electrode has a redox-active film on a surface of an electrically conductive substrate. The redox-active film includes a redox-active sulfur-containing substance which has at least one aromatic ring and a ring containing at least one disulfide bond, with a side of the disulfide-containing ring constituting a side of the aromatic ring, and which has a property that it is capable of reversibly releasing and receiving one or more electrons per disulfide-containing ring without the disulfide-containing ring being opened.
摘要:
A reference electrode for generating a reference potential on an ion sensor is disclosed. The reference electrode has a lamination film covering a surface of an electrically conductive substrate and formed by alternately laminating silver halide thin films and hydrophobic resin thin films.
摘要:
An enzyme sensor is disclosed, which has a two-layer fixed film structure consisting of a reduction function layer including an electron movement medium and di-valent iron ions and an enzyme-fixed layer covering said reduction function layer, and in which hydrogen peroxide generated through decomposition of glucose or the like in the enzyme-fixed layer is reduced by electron movement medium and di-valent iron ions in the reduction function layer.Thus, the construction of enzyme sensor is simplified, measurement is extremely facilitated, and the measurement time is reduced.As a different principle of enzyme sensor, an electrically conductive substrate of conductive carbon or the like is covered with an oxygen-reducing catalytic function layer and enzyme layer.Thus, there is no problem of contamination of enzyme sensor, and it is possible to readily manufacture and miniaturize enzyme sensors.
摘要:
A reference electrode for generating a reference potential on an ion sensor is disclosed. The reference electrode has a lamination film covering a surface of an electrically conductive substrate and formed by alternately laminating silver halide thin films and hydrophobic resin thin films.
摘要:
The surface of a gate insulating membrane of an ion-selective field-effect transistor (ISFET) (10) is coated with a carbon thin membrane (4), and the surface of the latter is coated with an electrolytic polmerization membrane (3) of 2,6 xylenol. The ISFET obtained exhibits hydrogen-ion selectivity, little drift, high stability and little response to light. If the surface of the electrolytic polmerization membrane (3) of 2,6 xylenol is coated with another ion-selective membrane or enzyme-active membrane, various ions and the concentration of a biological substrate can be measured.
摘要:
A reference electrode is prepared by coating the surface of a conductive substrate with a silver complex polymer compound, which is either a compound prepared by the complex formation between a polymer compound containing a coordination nitrogen atom and a silver ion or an aforementioned complex compound containing a silver halide. This reference electrode can be used by a combination with ion sensor, a pH sensor and so on.
摘要:
It is a first object of the present invention to provide a lithium secondary battery using a conductive polymer such as polyaniline, which exhibits a stable electrical conductivity over a long time. To achieve the first object, there is provided a positive electrode material for a lithium secondary battery, comprising an electrically conductive polymer having an amino group, a hydrogen bonding compound, and a protonic acid. Further, it is a second object of the present invention to provide a lithium secondary battery exhibiting a high charge-discharge capacity while using a conductive polymer such as polyaniline. To achieve the second object, there is provided a positive electrode material for a lithium secondary battery, comprising an electrically conductive polymer, and LiNiO2 and/or liFePO4.