852 results about "Thiol group" patented technology

The invention discloses a self-repairing polymer electrolyte, a preparation method and application thereof, and a polymer lithium battery, the self-repairing polymer electrolyte comprises the following preparation raw materials by mass: 50-100 parts of polysiloxane diacrylate, 1-10 parts of disulfide diacrylate, 10-40 parts of a cross-linking agent, 60-120 parts of a plasticizer, 60-120 parts of a lithium salt, and 1-10 parts of a photoinitiator. According to the self-repairing polymer electrolyte disclosed by the invention, a thiol-ene click reaction can be carried out between carbon-carbon double bonds in polysiloxane diacrylate and disulfide diacrylate and sulfydryl of the cross-linking agent, so that a dynamic disulfide bond and hydrogen bond network structure is endowed to the self-repairing polymer electrolyte; and the dynamic disulfide bond and the hydrogen bond can enable the electrolyte membrane to realize self-healing at room temperature without external stimulation.

The invention provides a composite reagent system and a chalcopyrite and sphalerite collecting method, and belongs to the technical field of mineral processing. The composite reagent system comprises a histidine derived functional group collecting agent and a black agent, and the histidine derived functional group collecting agent (containing a total sulfur ester group, a sulfydryl functional group and a side chain imidazole ring) serves as a core and is compounded with the black agent according to a specific proportion to form a target combination-synergistic interaction flotation mechanism. The histidine derivative collecting agent derives high-activity functional groups under the alkaline condition, and after sulfydryl is dissociated, stable chemical bonds are formed by the dissociated sulfydryl and metal ions on the surfaces of the chalcopyrite and the zinc sulfide. The black powder serves as an auxiliary collecting agent, and the collecting capacity of fine-grain or low-activity sulfide minerals is enhanced through chemical adsorption of dithiophosphate radicals and metal ions on the surfaces of the chalcopyrite and the sphalerite. After the two components are compounded, the selective enrichment efficiency of copper-zinc minerals in the flotation process is remarkably improved.

The invention provides an intermediate layer structure for a solar cell and a preparation method and application thereof. The intermediate layer structure comprises a transparent conductive oxide layer, a self-assembled monomolecular hole transport layer and a self-assembled monomolecular connecting layer for connecting the transparent conductive oxide layer and the self-assembled monomolecular hole transport layer, the material of the self-assembled monomolecular hole transport layer is a self-assembled monomolecular material with a phosphonic acid end group; the material of the self-assembled monomolecular connecting layer is selected from one or two of a silane self-assembled monomolecular layer material or a carboxylic acid self-assembled monomolecular layer material, and the silane self-assembled monomolecular layer material and the carboxylic acid self-assembled monomolecular layer material have sulfydryl groups; the problems that in the prior art, the material coverage rate of a self-assembled monomolecular hole transport layer on a TCO is low, and the material distribution of the self-assembled monomolecular hole transport layer is not uniform are solved.

Provided are a ligand-drug conjugate represented by general formula Pc-(L-D)n or a pharmaceutically acceptable salt thereof, and further provided is a linker for conjugation represented by formula (L). The linker can efficiently and highly selectively perform chemical conjugation with a thiol group on cysteine, and the antibody-drug conjugate formed has good stability.

The invention relates to an electrolyte for an aqueous zinc ion battery and the zinc ion battery. The electrolyte consists of soluble zinc salt, an electrolyte additive and solvent water, and the electrolyte additive is a thiazole derivative containing functional groups such as sulfydryl, amino, sulfonic acid group and formic acid group. According to the electrolyte provided by the invention, the electrolyte additive can regulate and control the coordination environment through coordination with zinc ions so as to realize uniform deposition of zinc, meanwhile, the electrolyte additive can also be grafted to the surface of zinc through functional groups such as sulfydryl, amino, sulfonic acid group and formic acid group so as to form a layer of stable protective film, and the protective film has good zinc affinity; direct contact between an electrolyte and the zinc negative electrode can be effectively blocked, chemical corrosion and hydrogen evolution reaction of the zinc negative electrode can be reduced, interface ion transmission can be regulated and controlled, zinc dendrite growth is effectively inhibited, the cycling stability of the zinc negative electrode is improved, the cycle life of the battery is prolonged, the rate performance of the battery is improved, and the method is easy and convenient to prepare, low in cost, high in safety and suitable for industrial production. The large-scale production is easy to realize.

The invention discloses a bionic lignin-based saline-alkali soil improvement material and a preparation method thereof, and belongs to the technical field of high polymer materials and soil improvement. According to the saline-alkali soil improving material, lignin or a derivative thereof serves as a framework, glutenin charge distribution and a dynamic disulfide bond sodium ion response function are simulated, and the sequence and the proportion of chain segments of sulfonic acid groups and quaternary ammonium salt groups are accurately regulated and controlled through step-by-step activation and alternate copolymerization in an aqueous solution polymerization reaction system; positive and negative charges form more uniform sequence distribution, so that the amphipathy of the lignin compound is realized; then, sulfydryl is introduced through click chemistry, linear regulation and control of material viscosity and water solubility are achieved through the chain transfer characteristic of multi-sulfydryl functional groups, and the requirements of different saline-alkali soil application scenes are met. The limitation that a traditional lignin product is single in function is broken through, efficient utilization of lignin is achieved, and the intelligent saline-alkali soil improvement material integrating high stability and pH and Na < + > multi-environment response is developed.

The invention relates to the technical field of immune carrier microspheres, in particular to an immune carrier microsphere constructed by individualized MHC-II combined polypeptide, a vaccine and application of the immune carrier microsphere and the vaccine. A core comprises microspheres constructed by a plurality of MHC-II binding polypeptides, sequences of the MHC-II binding polypeptides are obtained based on HLA gene typing results of an inoculator, and each HLA gene corresponds to at least one high-affinity MHC-II binding polypeptide; a shell is a glucan with sulfydryl or other polymer coating layer, and sulfydryl is used as a coupling group to be connected with an antigen to construct the vaccine. The method has the advantages that competition is avoided, inhibition is generated, a better immune effect is achieved, antibodies of high-titer carrier molecules are not generated, and cross reaction side effects are avoided. The carrier molecular diversity is reduced; side effects are avoided. And antibody immunity and cellular immunity functions are generated. The particle size of the microspheres is controllable, and the immunologic function can be achieved without adjuvants. The preparation process is simple to operate and good in repeatability.

The invention relates to the technical field of marine chemical engineering, in particular to thiolated chitosan quaternary ammonium salt containing thiophene groups as well as a preparation method and application of the thiolated chitosan quaternary ammonium salt. The thiolated chitosan quaternary ammonium salt containing the thiophene group has a structure as shown in a formula I in the specification. The preparation method comprises the following steps: further reacting sulfhydrylated chitosan to obtain sulfhydrylated chitosan quaternary ammonium salt, and further introducing thiophene groups into the chitosan quaternary ammonium salt by taking the sulfhydrylated chitosan quaternary ammonium salt as a reaction raw material. Antioxidant activity experiments prove that the obtained thiolated chitosan quaternary ammonium salt derivative has good antioxidant activity, and can be widely researched and applied as an antioxidant in the fields of biological medicine, agriculture and the like. And the # imgabs0 # is shown in the formula 1.

The invention relates to the technical field of silicon dioxide surface modification, in particular to a silicon dioxide hollow sphere with an MOF composite layer, a manufacturing method and a dielectric loss prediction method. The silicon dioxide hollow sphere comprises a hollow spherical structure formed by silicon dioxide, an amino silane layer grafted on the surface of an inner core layer through a covalent bond, a ZIF-8 crystal layer growing in situ by taking amino as a nucleation site, and thiol groups distributed on the outer surface of an MOF crystal. According to the silicon dioxide hollow sphere with the MOF composite layer, the manufacturing method and the dielectric loss prediction method, the silicon dioxide hollow sphere with the MOF composite layer has good compatibility and stability in an LCP matrix, the dielectric loss is small, and the performance of a high-frequency FPC is effectively improved.

A photocurable silicone composition is disclosed. A cured product of the composition is also disclosed. The photocurable silicone composition comprises: (A) an organopolysiloxane having at least one aryl group with 6 to 12 carbons and at least one alkenyl group with 2 to 12 carbons in a molecule; (B) an organic compound having at least two ether bonds and at least one aliphatic carbon-carbon double bond in a molecule; (C) a thiol group-containing organic compound comprising; (C1) an organic compound having two thiol groups in a molecule, and (C2) an organic compound having at least three thiol groups in a molecule; and (D) a photoradical initiator. The composition generally suppresses crack and delamination of a cured product laminated between two substrates after thermal aging.

The invention relates to a low-smoke halogen-free flame-retardant plastic and a preparation method thereof, and belongs to the technical field of flame-retardant high polymer materials. The flame-retardant plastic is prepared from the following components: 12 to 17 weight percent of magnesium hydroxide superfine powder, 4.5 to 6.2 weight percent of modified flame retardant, 5 to 7 weight percent of flexibilizer, 0.9 to 1.2 weight percent of lubricant, 0.3 to 0.4 weight percent of antioxidant and the balance of PBT (Polybutylene Terephthalate) resin, the modified flame retardant is prepared by the following steps: reacting pentaerythritol with phosphorus oxychloride to prepare hydroxyl-containing polyhedral oligomeric phosphate, esterifying acryloyl chloride and the hydroxyl of the polyhedral oligomeric phosphate to prepare a monoester intermediate, and finally performing click addition on sulfydryl of pentaerythritol tetramercaptoacetate and double bonds of the monoester intermediate. The modified flame retardant interacts with magnesium hydroxide, a stable hollow carbon net is formed in the flame retardant process, and the hollow carbon net has a multi-layer adsorption and filtration effect on smoke particles, so that the release of smoke is reduced, and the smoke density is greatly reduced.

High surface area coatings are applied to solid substrates to increase the surface area available for solid-phase synthesis of polymers. The high surface area coatings use three-dimensional space to provide more area for functional groups to bind polymers than an untreated solid substrate. The polymers may be oligonucleotides, polypeptides, or another type of polymer. The solid substrate is a rigid supportive layer made from a material such as glass, a silicon material, a metal material, and plastic. The coating may be thin films, hydrogels, microparticles. The coating may be made from a metal oxide, a high-κ dielectric, a low-κ dielectric, an etched metal, a carbon material, or an organic polymer. The functional groups may be hydroxyl groups, amine groups, thiolate groups, alkenes, n-alkenes, alkalines, N-Hydroxysuccinimide (NHS)-activated esters, polyaniline, aminosilane groups, silanized oxides, oligothiophenes, and diazonium compounds. Techniques for applying coatings to solid substrates and attaching functional groups are also disclosed.

The embodiment of the invention belongs to the technical field of display, and relates to ink and application thereof. The ink comprises a conductive polymer containing a cross-linking group, an organic matter containing a thiol group and a solvent, and the thiol group is configured to be capable of performing a cross-linking reaction with the cross-linking group. The thin film prepared by adopting the ink is compact, and can inhibit the damage of a hole function layer to an electronic function layer, thereby obtaining better charge generation and separation capability and better device performance.

The coating material for photolithography contains 0.0001 to 3 wt% of a surfactant made from a resin having an aromatic group substituted with a fluorine atom, a trifluoromethoxy group, a difluoromethoxy group, a trifluoromethylthio group, or a difluoromethylthio group.

The invention provides a low-cyanide gold leaching agent system and a dump leaching process thereof, and belongs to the technical field of hydrometallurgy. According to the method, a synergistic process of'interface activation, cyanide etching and iron precipitation inhibition 'is constructed by designing a low-cyanide gold leaching agent system. The amino acid auxiliary leaching agent adsorbs the gold surface to weaken lattice energy, so that the etching efficiency of trace cyanide ions is improved; mercapto-containing malic acid is used as a chelating agent, specific mercapto in molecules of the mercapto-containing malic acid and iron ions form an ultrahigh-stability water-soluble complex, generation of ferric hydroxide precipitates is thoroughly blocked, ferrous ions stabilized by the chelating agent are subjected to in-situ oxidation through dissolved oxygen and efficiently regenerated into potassium ferricyanide, and accumulation of free cyanogens in a solution system is eliminated; meanwhile, a chelating agent-iron complex forms a self-buffering pair, the pH of the dump leaching solution is accurately controlled, and secondary precipitation caused by local alkalization is prevented. According to the process, under the synergistic effect that the core chelating agent guarantees permeation stability and the leaching aid accelerates gold dissolution, the heap leaching period is compressed to 45 days.

The invention discloses an ortho-thiol modified triphenylene carboxylic acid ligand, an MS2O2 site-containing metal organic framework material as well as a preparation method and application of the ortho-thiol modified triphenylene carboxylic acid ligand and the MS2O2 site-containing metal organic framework material. The ligand has a triphenylene main body pi conjugated structure and ortho-position modified carboxyl and thiol groups, and is coordinated with metal ions through solvothermal reaction, and the bond length of an S-M bond formed by coordination is shorter than that of an O-M bond formed by coordination of the carboxyl and the metal ions, so that d-pi conjugation of the coordinated metal ions and the pi conjugated organic ligand is enhanced, and the metal ions and the pi conjugated organic ligand are combined to form the pi conjugated organic ligand. The electron conduction rate in the metal organic framework material is favorably improved, so that the reaction activity of the metal organic framework material is further improved. Especially, the photocatalytic hydrogen evolution rate (HER) can reach 4126.01 [mu] mol g <-1 > h <-1 > by taking Co as a coordination metal ion material, and the material has excellent photocatalytic hydrogen evolution activity. The metal organic framework material can be produced and prepared through solvothermal reaction, the preparation process is mature, the steps are simple, the yield is high, and large-scale preparation can be achieved.

The invention belongs to the technical field of biomedical materials and regenerative medicine, and relates to collagen-based injectable fiber hydrogel as well as a preparation method and application thereof. According to the injectable fiber hydrogel, methacrylated collagen and dithiothreitol are subjected to a thiol-ene click reaction rapidly under the action of a photoinitiator through illumination, a primary cross-linked network is formed, and the injection and in-situ gel forming requirements are met; then under the conditions that the pH is 6.5-8.0 and the temperature is 30-39 DEG C, collagen molecules are self-assembled into a nanofiber structure, and a bionic network similar to a natural extracellular matrix is obtained. The hydrogel disclosed by the invention has the advantages of rapid gelation, structural biomimetic property and biological activity; residual sulfydryl endows the hydrogel with active oxygen scavenging capacity, so that oxidative stress can be relieved, and immune response can be regulated; the fibrotic structure promotes cell adhesion, migration and tissue regeneration.

The present invention relates to a composition comprising a solid carrier, a lipase or a fragment thereof immobilized on the surface of the solid carrier wherein the lipase or a fragment thereof is in the open conformation, a protease or a fragment thereof immobilized on the surface of the solid carrier, an amylase or a fragment thereof immobilized on the surface of the solid carrier, an agent which interacts with the lid domain of the lipase or a fragment thereof, a protective layer to protect the lipase or a fragment thereof, the protease or a fragment thereof and the amylase or a fragment thereof by embedding the lipase or a fragment thereof, the protease or a fragment thereof and the amylase or a fragment thereof, and a functional constituent immobilized on the surface of the protective layer, wherein the functional constituent immobilized on the surface of the protective layer is a polymer comprising repeat units wherein each repeat unit comprises at least one amino group and / or at least one thiol group.

The invention relates to the technical field of degradable hyperbranched epoxy resin-carbon fiber composite materials, and particularly discloses a high-performance degradable imide skeleton hyperbranched epoxy resin-carbon fiber composite material and a preparation method thereof. The specific preparation process is as follows: (1) firstly synthesizing an imide skeleton-terminated sulfydryl hyperbranched polymer and hyperbranched epoxy resin; (2) chemically grafting carbon fiber cloth on the surface of the sulfydryl-terminated hyperbranched polymer to obtain modified carbon fiber cloth; and (3) fully infiltrating the modified carbon fiber cloth by blending hyperbranched epoxy resin and E51, and laminating, compounding and curing to obtain the high-strength and degradable epoxy resin-carbon fiber composite material. The composite material can be completely degraded in an alkaline alcohol solution, so that the carbon fiber is recycled and reused. The process is simple, and the composite material has high performance, high degradation efficiency and a recycling function and is expected to be used for manufacturing structural parts in the fields of wind power blades, aerospace and the like.

The present disclosure relates to the field of object surface finishing. More particularly, the disclosure relates to methods for surface finishing of objects and objects with surfaces finished with such methods. More in particular, the present disclosure relates to the use of organic compounds comprising hydrophilic groups for the surface finishing of objects, in particular using electrically conductive particles. Organic compounds comprising hydrophilic groups may be selected from organic compounds comprising carboxyl groups (e.g., fatty acids); hydroxyl groups (e.g., alcohols); sulfonic, sulfate, sulfone or thiol groups; nitro or nitrate groups; phosphate groups; and / or amine groups.

The invention discloses a preparation method of composite hydrogel for treating infectious wounds, which comprises the following steps: 1, dissolving double-bond modified recombinant collagen and a photoinitiator in deionized water containing vascular endothelial growth factor peptide under a dark condition to obtain a solution A; dissolving sulfhydrylated hyaluronic acid in deionized water containing the vascular endothelial growth factor peptide to obtain a solution B; and 2, mixing the solution A and the solution B, then adding an AgNO3 aqueous solution, carrying out vortex immediately, and then carrying out ultraviolet irradiation to obtain the composite hydrogel for treating infectious wounds. Thiolated hyaluronic acid and double-bond modified recombinant collagen are dissolved in an aqueous solution containing vascular endothelial growth factor peptide, an AgNO3 solution is added to enable Ag < + > and sulfydryl to be crosslinked, then photo-crosslinking is conducted to obtain the composite hydrogel, and the hydrogel has the advantages of being antibacterial, promoting cell proliferation and vascularization and the like and can be used for treating infectious wounds.

The present invention provides a new separation functional layer suitable for separating an acid gas from a gas mixture containing the acid gas. A separation functional layer of the present invention includes polyimide. The polyimide includes a structural unit A1 derived from a tetracarboxylic dianhydride having a six-membered ring acid anhydride structure, and a structural unit B1 derived from diamine. At least one of the structural unit A1 and the structural unit B1 has at least one functional group selected from the group consisting of a carboxyl group, a hydroxyl group, a thiol group, and metal salts of these groups.

The invention relates to the technical field of biomedical material modification, in particular to a sulfhydrylation biocompatible polymer derivative, a preparation method thereof, extracellular matrix imitating injectable in-situ cross-linked hydrogel and application thereof. According to the invention, a pre-acylation strategy is firstly carried out on the biocompatible polymer containing both amino and carboxyl, so that a three-dimensional cross-linked byproduct formed by coupling of self amido bonds is avoided, meanwhile, the number of side chain carboxyl for sulfhydrylation modification is increased, and the accurate and adjustable pre-acylation rate can optimize the physical and chemical properties of the derivative; meanwhile, a disulfide bond is used as a protective precursor, active sulfydryl is introduced through amido bond coupling, self-oxidation of the active sulfydryl in the reaction process is avoided, sulfydryl activity is guaranteed, hydrazine-containing reagents are avoided, safety is further improved, virus residues and immunological rejection risks are avoided, universality is high, and the application prospect is wide; and in combination with a high-concentration preparation method, the method has the advantage of large-scale production, and further widens the industrial application potential.

The invention discloses a modified polypropylene insulating material which comprises a cross-linked structure formed by addition of modified polypropylene through sulfydryl alkene, and the modified polypropylene is polypropylene grafted with a thiol compound. The modified polypropylene insulating material which is compact in material structure and has excellent peel strength and interface breakdown strength is obtained by carrying out thiol compound grafting modification on the surface of polypropylene and further carrying out sulfydryl alkene addition reaction with a polyvinyl compound. The modified polypropylene insulating material disclosed by the invention is used in a wrapping tape, and can construct a winding-increasing insulating structure which is tightly attached between layers and has no physical interface, so that the insulating strength and the long-term operation reliability of cable accessories are greatly improved, and the safety of power transmission and the stability of a power system are guaranteed.

The present invention provides an antibody-drug conjugate, a preparation method thereof, and an application thereof. The structural formula of the antibody-drug conjugate is as follows. Among them, mAb is the anti-HER2 antibody trastuzumab; the conjugate is obtained by Michael addition of the thiol group obtained by reducing the inter-chain disulfide bond of mAb with the linker-irinotecan conjugate LD038; n ranges from 1 to 10. The binding activity and internalization activity of the antibody-drug conjugate to various tumor target cells are not affected; compared with the same type of antibody-drug conjugate, the antibody-drug conjugate PRO1102 synthesized by the preparation method of the antibody-drug conjugate of the present invention shows certain advantages in terms of in vitro cytotoxicity to tumor cells, anti-tumor activity in rats in vivo, and in vivo pharmacokinetics.

The present invention relates to improved cellulose nanocrystal fillers for rubber compositions, and more particularly to the grafting of disulfides and thioesters onto cellulose nanocrystals to improve performance as fillers in rubber compositions. At least one embodiment describes a method of grafting a thiol or disulfide on a CNC surface by, for example, esterification of 3-mercapto-propionic acid (MPA), 3-(acetylthio) propionic acid (APA), or dithiodipropionic acid (DTDPA). The reaction can be carried out on CNC that is highly dispersed in a suitable solvent and the reaction conditions are improved to achieve an advantageous degree of substitution DS. Embodiments further disclose how the surface thiol groups may then be protected in a second step as thio esters or asymmetric disulfides to modulate the hydrophobicity of CNC to improve compatibility with styrene-butadiene, SBR or natural rubber.

The invention discloses sulfide solid electrolyte slurry, a high-density sulfide solid electrolyte film and a preparation method thereof, and belongs to the technical field of all-solid-state batteries. The preparation method of the sulfide solid electrolyte slurry comprises the following steps: mixing polythiol, a solvent, a binder and a sulfide solid electrolyte, and stirring to obtain the sulfide solid electrolyte slurry; wherein the polythiol refers to thiol containing more than two sulfydryl groups. The core innovation of the invention lies in that the polythiol is introduced into the sulfide solid electrolyte slurry, and the S-S interaction force between the sulfydryl of the polythiol and the sulfide solid electrolyte is utilized to effectively reduce the distance between the sulfide solid electrolyte and the sulfide solid electrolyte; and the gap between the sulfide solid electrolyte and the sulfide solid electrolyte is reduced, so that the sulfide solid electrolyte film with higher density is prepared.

To provide a thermosetting maleimide resin composition which has low melt viscosity during heating, has excellent flexibility of the cured film in its cured product, has low dielectric constant and dielectric loss tangent, has high glass transition temperature, has a low coefficient of thermal expansion, and has excellent long-term heat resistance and moisture resistance.SOLUTION: A thermosetting maleimide resin composition contains (A) a bismaleimide compound represented by the following formula (1) (in the formula (1), A represents a tetravalent organic group including a cyclic structure, B represents a divalent hydrocarbon group derived from a dimer acid skeleton, Q represents a divalent group having a fluorene skeleton or an indene skeleton, W is B or Q, n is 1 to 100, and m is 1 to 100, (B) a thermosetting resin having one or more maleimide group reactive functional groups selected from an alkenyl group, a maleimide group, an epoxy group, a cyanate group, a hydroxyl group, an acid anhydride group, a (meth)acrylic group and a thiol group, and (C) a reaction accelerator.SELECTED DRAWING: None

The invention relates to the field of chemical foaming agents, in particular to a modified sodium bicarbonate foaming agent and a preparation method thereof. The modified sodium bicarbonate foaming agent comprises the following components in parts by weight: 50-90 parts of sodium bicarbonate, 5-45 parts of a coating agent and 1-10 parts of a dehumidification separant, the average particle size of the sodium bicarbonate is 10-500 nm; the coating agent is prepared from one of n-docosanethiol, catechol and resorcinol. Nanoscale sodium bicarbonate is tightly wrapped by the coating agent, so that the activation energy of the thermal decomposition reaction of sodium bicarbonate is improved, the thermal decomposition temperature of the sodium bicarbonate foaming agent is increased, and the foaming agent can be well applied to foaming of general-purpose plastics. Thiol groups of n-docosyl mercaptan and phenolic hydroxyl groups of catechol and resorcinol can react with sodium bicarbonate more easily when the foaming agent is decomposed, generation of more carbon dioxide is promoted, and the average decomposition rate of the modified sodium bicarbonate foaming agent is increased.

A bio-electrode composition contains (A) an ionic polymer material, (B) an addition reaction-curable silicone having at least a hydrosilyl group, (C) a platinum-group catalyst, and a solvent. The bio-electrode composition has a water content of 0.2 mass % or less. The solvent includes one or more of an ether solvent, an ester solvent, and a ketone solvent each of which does not contain a hydroxy group, a carboxyl group, a nitrogen atom, or a thiol group. Thus, present invention provides: a bio-electrode composition capable of forming a living body contact layer for a bio-electrode which is excellent in electric conductivity and biocompatibility, light-weight, and manufacturable at low cost, and which does not leave residue on skin after attachment to and peeling from the skin; a bio-electrode including a living body contact layer formed of the bio-electrode composition; and a method for manufacturing the bio-electrode.