Abstract: The present disclosure relates to a composition for developing hair color comprising polyphenol, a method of developing hair color using the composition, a shampoo for developing hair color comprising the composition, and a method of developing hair color using the composition. According to the present disclosure, the composition for developing hair color comprising trihydroxybenzene produces the development of hair color in brown, dark brown, or black and has excellent color development enhancing power, color development lasting power, and anti-gray hair, without using amine compounds, irritating alkaline agents, and oxidizing agents.

Abstract: The present invention relates to a biocompatible film that exhibits high tensile strength and has biocompatibility and elastic properties, enabling its efficient use in the treatment or protection of human organs. The present invention also relates to a method for producing the biocompatible film.

Abstract: The present invention relates to an adhesive composition comprising a polyvinyl alcohol and a water-soluble polyphenol compound, to an adhesive comprising the same, and to a manufacturing method therefor and, more specifically, to an adhesive composition, which has little toxicity, can adhere even without a curing process unlike a conventional adhesive, enables the manufacturing of a gel by hydrogen binding characteristics between the polyvinyl alcohol compound and the water-soluble polyphenol compound, and retains adhesive properties in water.

Abstract: The present disclosure relates to an adhesive composition and a method for preparing the same, and more particularly, to an adhesive composition having high biodegradability and excellent mechanical properties while being biocompatible, and a method for preparing the same.

Abstract: Provided are a cellulose composite material, a three-dimensional (3D) printing material and a 3D printing structure including the cellulose composite material, and a method of manufacturing a 3D printing structure using the cellulose composite material. The cellulose material may be used as a 3D printable eco-friendly material using cellulose that is an eco-friendly natural material and a compound having a catechol group that is derived from nature, and a structure implemented with 3D printing has excellent tensile strength or compressive strength.

Abstract: The present invention relates to a heart targeting agent comprising tannic acid, in which the agent aids a heart disease therapeutic drug to be delivered to the heart and bind to the cardiac myocardium by inducing tannylation of the drug so as to make heart targeting and accumulation of the drug possible. Unlike the conventional invasive method used for the traditional drugs to be able to target the heart, the agent of the present invention can help a drug to target the heart with high efficiency just via non-invasive intravenous administration.

Abstract: An adhesive composition, a method for preparing the same, a reticle assembly including the same, and a method for fabricating the reticle assembly including the same are provided. The adhesive composition includes a polyphenol compound including tannic acid, a polymer including polyvinyl alcohol, and a solvent including water and alcohol.

Abstract: The present invention relates to a curable composition and a use thereof and, more particularly, to a curable composition and a use thereof, the curable composition comprising: (a) a compound capable of being denatured to a quinone-based compound by oxygen; (b) an amine-based polymeric compound; and (c) an oxygen clathrate structure. The curable composition is rapidly cured and can be cured not only at an interface of a conventional film but also to the inside of the film, such that the curable composition has uniform physical properties throughout the entire film and excellent physical properties compared to a curing film obtained by curing at an existing interface.

Abstract: The present disclosure relates to an adhesive composition including a polyvinyl alcohol and a water-soluble polyphenol compound, to an adhesive containing the composition, and to a manufacturing method therefor. The adhesive composition has a low or no toxicity, can adhere even without a curing process unlike a conventional adhesive, enables the manufacturing of a gel by hydrogen binding characteristics between the polyvinyl alcohol compound and the water-soluble polyphenol compound, and retains adhesive properties in water.

Abstract: A bio-inspired method for detoxifying contaminated water is disclosed. In the method, polydopamine, a mussel-inspired adhesive catecholamine was used as an adsorbent to effectively remove from contaminated water three major classes of toxic agents: heavy metal ions (e.g., Cr, Hg, Pb, Cu, and Cd), toxic organic species (e.g., 4-aminopyridine), and radioisotopes (e.g., Lutetium-177). Furthermore, the polydopamine adsorbent was regenerated by treatment with acid or hydrogen peroxide.

Abstract: The present invention provides facile and accurate molecular diagnosis of disease-specific genes capable of the naked eye detection through amplifying the target genes to selectively block the fluid path in a microfluidic device. Specifically, the present invention includes an isothermal amplification of target genes through a rolling circle amplification, a microfluidic device for detecting pathogen genes, and a detection method using the same. Therefore, the present invention can conveniently detect a single target gene, such as a single pathogen, or at the same time, several target genes, such as several pathogens, without complicated mechanical equipment.

Abstract: The present invention relates to a separator for a lithium-sulfur battery having a composite coating layer including polydopamine, and a method for preparing the same, and in particular, to a lithium-sulfur battery suppressing lithium polysulfide elution by using a composite coating layer including polydopamine and a conductive material on one surface of a separator. In the lithium-sulfur battery according to the present invention, a porous structure of polydopamine adsorbs lithium polysulfide eluted from a positive electrode preventing elution and diffusion, and by providing additional electric conductivity, a reaction site of a positive electrode active material is provided, and therefore, battery capacity and life time properties are enhanced.

Abstract: The present invention relates to a heart targeting agent comprising tannic acid, in which the agent aids a heart disease therapeutic drug to be delivered to the heart and bind to the cardiac myocardium by inducing tannylation of the drug so as to make heart targeting and accumulation of the drug possible. Unlike the conventional invasive method used for the traditional drugs to be able to target the heart, the agent of the present invention can help a drug to target the heart with high efficiency just via non-invasive intravenous administration.

Abstract: The present invention relates to an electrolyte containing a polydopamine and a lithium-sulfur battery including the same and, more particularly, to a technique in which polydopamine contained in an electrolyte adsorbs a lithium polysulfide eluted from a positive electrode of a lithium-sulfur battery. When using an electrolyte, according to the present invention, to which polydopamine particles are added, the polydopamine particles dispersed in the electrolyte act to adsorb lithium polysulfide eluted from a positive electrode during the charging and discharging, and thus can suppress the diffusion thereof, i.e., suppress a shuttle reaction, thereby improving the capacity and lifetime characteristics of the lithium-sulfur battery.

Abstract: The present invention relates to a separator for a lithium-sulfur battery having a composite coating layer including polydopamine, and a method for preparing the same, and in particular, to a lithium-sulfur battery suppressing lithium polysulfide elution by using a composite coating layer including polydopamine and a conductive material on one surface of a separator. In the lithium-sulfur battery according to the present invention, a porous structure of polydopamine adsorbs lithium polysulfide eluted from a positive electrode preventing elution and diffusion, and by providing additional electric conductivity, a reaction site of a positive electrode active material is provided, and therefore, battery capacity and life time properties are enhanced.

Abstract: The present invention relates to a curable composition and a use thereof and, more particularly, to a curable composition and a use thereof, the curable composition comprising: (a) a compound capable of being denatured to a quinone-based compound by oxygen; (b) an amine-based polymeric compound; and (c) an oxygen clathrate structure. The curable composition is rapidly cured and can be cured not only at an interface of a conventional film but also to the inside of the film, such that the curable composition has uniform physical properties throughout the entire film and excellent physical properties compared to a curing film obtained by curing at an existing interface.

Abstract: The present invention relates to an ink composition containing a multifunctional adhesive suitable for a three-dimensional (3D) printer and the use thereof. The multifunctional adhesive of the present invention contains a compound with a catechol group and exhibits excellent adhesion to various materials (e.g. dry plaster powders, polymers, metals, ceramics, and composite materials). The use of the ink composition of the present invention containing the multifunctional adhesive enables the processing of various functional materials that were difficult to fabricate into a 3D structure. Therefore, it is highly likely that the ink composition of the present invention can effectively create a market for functional materials for a 3D printer and find new areas of application (e.g. automotive, medical, fashion, aviation/aerospace, construction, consumer electronics, entertainment, etc.).

Abstract: A bio-inspired method for detoxifying contaminated water is disclosed. In the method, polydopamine, a mussel-inspired adhesive catecholamine was used as an adsorbent to effectively remove from contaminated water three major classes of toxic agents: heavy metal ions (e.g., Cr, Hg, Pb, Cu, and Cd), toxic organic species (e.g., 4-aminopyridine), and radioisotopes (e.g., Lutetium-177). Furthermore, the polydopamine adsorbent was regenerated by treatment with acid or hydrogen peroxide.

Abstract: The present invention provides a surface-independent surface-modifying multifunctional biocoating and methods of application thereof. The method comprises contacting at least a portion of a substrate with an alkaline solution comprising a surface-modifying agent (SMA) such as dopamine so as to modify the substrate surface to include at least one reactive moiety. In another version of the invention, a secondary reactive moiety is applied to the SMA-treated substrate to yield a surface-modified substrate having a specific functionality.

Abstract: The present invention relates to an electrolyte containing a polydopamine and a lithium-sulfur battery including the same and, more particularly, to a technique in which polydopamine contained in an electrolyte adsorbs a lithium polysulfide eluted from a positive electrode of a lithium-sulfur battery. When using an electrolyte, according to the present invention, to which polydopamine particles are added, the polydopamine particles dispersed in the electrolyte act to adsorb lithium polysulfide eluted from a positive electrode during the charging and discharging, and thus can suppress the diffusion thereof, i.e., suppress a shuttle reaction, thereby improving the capacity and lifetime characteristics of the lithium-sulfur battery.