Bio-electrode composition, bio-electrode, and method for manufacturing the same

A bio-electrode composition comprising an ionic polymer material as a component (A), wherein

• the component (A) comprises a polymer having:
• a repeating unit-a having a structure selected from the group consisting of salts of ammonium, sodium, potassium, and silver formed with any of fluorosulfonic acid, fluorosulfonimide, and N-carbonyl-fluorosulfonamide;
• and a repeating unit-b having a nitro group, wherein
• the repeating unit-a comprises at least one repeating unit selected from the group consisting of repeating units-a1 to -a7 shown by the following general formula (2), wherein
• the bio-electrode composition comprising a polymer having a repeating unit-b1 having a nitro group shown by the following general formula (4) copolymerized in addition to the at least one repeating unit selected from the group consisting of the repeating units-a1 to -a7 shown by the general formula (2),
• wherein R1, R3, R5, R8, R10, R11, and R13 each independently represent a hydrogen atom or a methyl group;
• R2, R4, R6, R9, R12, and R14 each independently represent a single bond or a linear, branched, or cyclic hydrocarbon group having 1 to 13 carbon atoms, the hydrocarbon group optionally having either or both of an ester group and an ether group;
• R7 represents a linear or branched alkylene group having 1 to 4 carbon atoms, and one or two hydrogen atoms in R7 are optionally substituted with a fluorine atom;
• X1, X2, X3, X4, X6, and X7 each independently represent any of a single bond, a phenylene group, a naphthylene group, an ether group, an ester group, and an amide group;
• X5 represents any of a single bond, an ether group, and an ester group;
• Y represents an oxygen atom or a —NR19— group;
• R19 represents a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms, and optionally forms a ring together with R4;
• Rf1′ and Rf5′ each represent a fluorine atom, a trifluoromethyl group, or a linear or branched alkyl group having 1 to 4 carbon atoms, and have at least one fluorine atom;
• “m” represents an integer of 1 to 4;
• a1, a2, a3, a4, a5, a6, and a7 satisfy 0≤a1<1.0, 0≤a2<1.0, 0≤a3<1.0, 0≤a4<1.0, 0≤a5<1.0, 0≤a6<1.0, 0≤a7<1.0, and 0≤a1+a2+a3+a4+a5+a6+a7<1.0;
• and M+ represents an ion selected from the group consisting of an ammonium ion, a sodium ion, a potassium ion, and a silver ion,
• wherein R20 represents a hydrogen atom or a methyl group;
• X8 represents any of a single bond, a phenylene group, a naphthylene group, an ether group, an ester group, and an amide group;
• R21 represents a single bond, a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms, or a phenylene group, the alkylene group optionally having a hydroxy group, a carboxy group, an ether group, an ester group, a urethane group, a thiourethane group, a carbonate group, an amide group, or a urea bond, and the phenylene group is optionally substituted with a linear or branched alkyl group having 1 to 4 carbon atoms, an alkoxy group, a halogen atom, or a cyano group;
• and “n” represents 1 or 2 and b1 satisfies 0<b1<1.0.