Bio-electrode composition, bio-electrode, and method for manufacturing a bio-electrode
The present invention provides a bio-electrode composition including a silsesquioxane bonded to a sulfonimide salt, wherein the sulfonimide salt is shown by the following general formula (1): wherein R 1 represents a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms that may have an aromatic group, an ether group, or an ester group, or an arylene group having 6 to 10 carbon atoms; Rf represents a linear, branched, or cyclic alkyl group having 1 to 4 carbon atoms containing at least one fluorine atom; M + is an ion selected from a lithium ion, a sodium ion, a potassium ion, and a silver ion. This can form a living body contact layer for a bio-electrode that is excellent in electric conductivity and biocompatibility, light-weight, manufacturable at low cost, and free from large lowering of the electric conductivity even though it is wetted with water or dried.
1. A bio-electrode composition comprising:
a silsesquioxane bonded to a sulfonimide salt as a component (A); and
an adhesive resin as a component (B),
wherein the silsesquioxane bonded to a sulfonimide salt has a repeating unit-a shown by the following general formula (2):
wherein
R 1 represents a linear alkylene group having 1 to 20 carbon atoms, a branched or cyclic alkylene group having 3 to 20 carbon atoms, or an arylene group having 6 to 10 carbon atoms, with the alkylene group optionally having an aromatic group, an ether group, or an ester group;
Rf represents a linear alkyl group having 1 to 4 carbon atoms, or a branched or cyclic alkyl group having 3 to 4 carbon atoms, each containing at least one fluorine atom; and
M + is an ion selected from a lithium ion, a sodium ion, a potassium ion, and a silver ion.
2. The bio-electrode composition according to claim 1 , wherein the component (B) is one or more resins selected from a silicone resin, a (meth)acrylate resin, and a urethane resin.
3. The bio-electrode composition according to claim 1 , further comprising a carbon powder and/or a metal powder as a component (C).
4. The bio-electrode composition according to claim 3 , wherein the carbon powder is either or both of carbon black and carbon nanotube.
5. The bio-electrode composition according to claim 3 , wherein the metal powder is a powder of a metal selected from gold, silver, platinum, copper, tin, titanium, nickel, aluminum, tungsten, molybdenum, ruthenium, chromium, and indium.
6. The bio-electrode composition according to claim 1 , further comprising an organic solvent as a component (D).
7. A bio-electrode comprising an electro-conductive base material and a living body contact layer formed on the electro-conductive base material;
wherein the living body contact layer is a cured material of the bio-electrode composition according to claim 1 .
8. The bio-electrode according to claim 7 , wherein the electro-conductive base material comprises one or more species selected from gold, silver, silver chloride, platinum, aluminum, magnesium, tin, tungsten, iron, copper, nickel, stainless steel, chromium, titanium, carbon, and an electro-conductive polymer.
9. A method for manufacturing a bio-electrode having an electro-conductive base material and a living body contact layer formed on the electro-conductive base material, comprising:
applying the bio-electrode composition according to claim 1 onto the electro-conductive base material; and curing the bio-electrode composition; thereby forming the living body contact layer.
10. The method for manufacturing a bio-electrode according to claim 9 , wherein the electro-conductive base material comprises one or more species selected from gold, silver, silver chloride, platinum, aluminum, magnesium, tin, tungsten, iron, copper, nickel, stainless steel, chromium, titanium, carbon, and an electro-conductive polymer.
11. A bio-electrode composition comprising:
a silsesquioxane bonded to a sulfonimide salt as a component (A); and
an adhesive resin as a component (B), and that contains:
diorganosiloxane having an alkenyl group, and
organohydrogenpolysiloxane having an SiH group,
wherein the sulfonimide salt is shown by the following general formula (1):
wherein
R 1 represents a linear alkylene group having 1 to 20 carbon atoms, a branched or cyclic alkylene group having 3 to 20 carbon atoms, or an arylene group having 6 to 10 carbon atoms, with the alkylene group optionally having an aromatic group, an ether group, or an ester group;
Rf represents a linear alkyl group having 1 to 4 carbon atoms, or a branched or cyclic alkyl group having 3 to 4 carbon atoms, each containing at least one fluorine atom; and
M + is an ion selected from a lithium ion, a sodium ion, a potassium ion, and a silver ion.
12. The bio-electrode composition according to claim 11 , wherein the component (B) further contains a silicone resin having an R x SiO (4-x)/2 unit (wherein, R represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and “x” is a number in a range of 2.5 to 3.5) and an SiO 2 unit.
13. The bio-electrode composition according to claim 11 , further comprising a carbon powder and/or a metal powder as a component (C).
14. The bio-electrode composition according to claim 13 , wherein the carbon powder is either or both of carbon black and carbon nanotube.
15. The bio-electrode composition according to claim 13 , wherein the metal powder is a powder of a metal selected from gold, silver, platinum, copper, tin, titanium, nickel, aluminum, tungsten, molybdenum, ruthenium, chromium, and indium.
16. The bio-electrode composition according to claim 11 , further comprising an organic solvent as a component (D).
17. A bio-electrode comprising an electro-conductive base material and a living body contact layer formed on the electro-conductive base material;
wherein the living body contact layer is a cured material of the bio-electrode composition according to claim 7 .
18. The bio-electrode according to claim 17 , wherein the electro-conductive base material comprises one or more species selected from gold, silver, silver chloride, platinum, aluminum, magnesium, tin, tungsten, iron, copper, nickel, stainless steel, chromium, titanium, carbon, and an electro-conductive polymer.
19. A method for manufacturing a bio-electrode having an electro-conductive base material and a living body contact layer formed on the electro-conductive base material, comprising:
applying the bio-electrode composition according to claim 11 onto the electro-conductive base material; and curing the bio-electrode composition; thereby forming the living body contact layer.
20. The method for manufacturing a bio-electrode according to claim 19 , wherein the electro-conductive base material comprises one or more species selected from gold, silver, silver chloride, platinum, aluminum, magnesium, tin, tungsten, iron, copper, nickel, stainless steel, chromium, titanium, carbon, and an electro-conductive polymer.
21. A bio-electrode composition comprising:
a silsesquioxane bonded to a sulfonimide salt as a component (A); and
an adhesive resin as a component (B), wherein the component (B):
is one or more resins selected from a silicone resin, a (meth)acrylate resin, and a urethane resin, and
contains diorganosiloxane having an alkenyl group, and organohydrogenpolysiloxane having an SiH group,
wherein the sulfonimide salt is shown by the following general formula (1):
wherein
R 1 represents a linear alkylene group having 1 to 20 carbon atoms, a branched or cyclic alkylene group having 3 to 20 carbon atoms, or an arylene group having 6 to 10 carbon atoms, with the alkylene group optionally having an aromatic group, an ether group, or an ester group;
Rf represents a linear alkyl group having 1 to 4 carbon atoms, or a branched or cyclic alkyl group having 3 to 4 carbon atoms, each containing at least one fluorine atom; and
M + is an ion selected from a lithium ion, a sodium ion, a potassium ion, and a silver ion.
22. The bio-electrode composition according to claim 21 , wherein the component (B) further contains a silicone resin having an R x SiO (4-x)/2 unit (wherein, R represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, and “x” is a number in a range of 2.5 to 3.5) and an SiO 2 unit.
23. The bio-electrode composition according to claim 21 , further comprising a carbon powder and/or a metal powder as a component (C).
24. The bio-electrode composition according to claim 23 , wherein the carbon powder is either or both of carbon black and carbon nanotube.
25. The bio-electrode composition according to claim 23 , wherein the metal powder is a powder of a metal selected from gold, silver, platinum, copper, tin, titanium, nickel, aluminum, tungsten, molybdenum, ruthenium, chromium, and indium.
26. The bio-electrode composition according to claim 21 , further comprising an organic solvent as a component (D).
27. A bio-electrode comprising an electro-conductive base material and a living body contact layer formed on the electro-conductive base material;
wherein the living body contact layer is a cured material of the bio-electrode composition according to claim 21 .
28. The bio-electrode according to claim 27 , wherein the electro-conductive base material comprises one or more species selected from gold, silver, silver chloride, platinum, aluminum, magnesium, tin, tungsten, iron, copper, nickel, stainless steel, chromium, titanium, carbon, and an electro-conductive polymer.
29. A method for manufacturing a bio-electrode having an electro-conductive base material and a living body contact layer formed on the electro-conductive base material, comprising:
applying the bio-electrode composition according to claim 21 onto the electro-conductive base material; and curing the bio-electrode composition; thereby forming the living body contact layer.
30. The method for manufacturing a bio-electrode according to claim 29 , wherein the electro-conductive base material comprises one or more species selected from gold, silver, silver chloride, platinum, aluminum, magnesium, tin, tungsten, iron, copper, nickel, stainless steel, chromium, titanium, carbon, and an electro-conductive polymer.