WO2018034464A1 - 초상자성 나노복합체의 제조방법 및 이를 이용하여 제조된 초상자성 나노복합체 - Google Patents
초상자성 나노복합체의 제조방법 및 이를 이용하여 제조된 초상자성 나노복합체 Download PDFInfo
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Definitions
- the present invention relates to a method for producing a superparamagnetic nanocomposite and a superparamagnetic nanocomposite prepared using the same, and specifically, to a method for preparing a superparamagnetic nanocomposite applicable to a biological target material detection and a superparamagnetic nanocomposite prepared using the same. It is about a complex.
- biomolecules such as target biomarkers with high sensitivity
- binding assays based on antigen-antibody immune reactions, DNA hybridization or receptor reactions are widely used, depending on the target material.
- the presence of the target molecule is determined by a signal transducer that converts the binding reaction to the target molecule into a measurable signal.
- magnetic nanoparticle mediated isolation technology using magnetic force can be obtained by concentrating only target biomolecules from a suspension solution containing various impurities or non-target substances (positive isolation), or Negative isolation provides benefits such as simplification of the assay, ease of processing, improved sensitivity, specificity, high throughput screening, and scalability.
- Magnetic nanoparticle-based separation technology proceeds by bonding a ligand substance that specifically binds to a target molecule to particles, recognizing and binding the target molecule of the ligand substance in a mixed solution, and separating magnetic particles using external magnetic force. do.
- magnetic particles should be capable of (i) minimizing non-specific adsorption from various non-specific materials in suspension solutions, and (ii) stabilizing colloidal particles from a variety of biochemical environments. It should be able to maintain and (iii) be easy to join the surface of various functional groups. In order to have an excellent non-fouling bio-interface, it is desirable to have hydrophilicity and neutrality and have properties including hydrogen bond acceptors.
- PEGylation ie coating the surface of the particles with poly (ethylene glycol), one of the biocompatible polymers, is one of the most successful methods of designing non-adhesive biointerface nanoparticles to date. Is considered.
- the finely adsorbed PEG layer satisfies the conditions listed above, reducing nonspecific adsorption of the particles and enhancing stability.
- the present inventors provide a method for producing a superparamagnetic nanocomposite, that is, a superparamagnetic iron oxide nanocomposite, which can be used for the purpose of magnetic separation for detecting a biological target material, which is higher than the conventional method for preparing magnetic nanoparticles for magnetic separation.
- the present invention is made by producing a superparamagnetic nanocomposite having excellent properties having a uniform size and particle size distribution, high aqueous dispersion, high superparamagnetism and high magnetization, without going through a complicated process in yield. Completed.
- An object of the present invention is a superparamagnetic nanocomposite of excellent properties having a high yield, uniform size and particle size distribution, high aqueous dispersion, maintain superparamagnetism and high magnetization without high complexity It is to provide a production method capable of producing a large amount of and the superparamagnetic nanocomposites produced by the above method.
- the present invention comprises the steps of mixing the iron precursor, solvent, stabilizer and reducing agent;
- the mixed solution in the mixing step is a temperature of 150 ⁇ 300 °C, preferably 200 ⁇ 240 °C, more preferably 200 °C, and 1.5 ⁇ 10 bar, preferably 1.5 ⁇ 6 bar More preferably, hydrothermal synthesis at a pressure of 1.5 to 2.5 bar to synthesize the superparamagnetic nanocomposites of the nanoclustered form; And it provides a method for producing a superparamagnetic nanocomposite comprising the step of separating the synthesized superparamagnetic nanocomposites.
- the separated superparamagnetic nanocomposite may further comprise a step of washing with a polar solvent.
- the iron precursor is iron chloride hexahydrate (FeCl 3 ⁇ 6H 2 O), iron chloride (II), iron chloride tetrahydrate (II), iron (III) and iron nitrate It can be selected from the group consisting of a hemihydrate (Fe (NO 3 ) 3 ⁇ 9H 2 O).
- the iron precursor may be selected from the group consisting of iron chloride hexahydrate (FeCl 3 ⁇ 6H 2 O), iron (II) chloride, iron chloride tetrahydrate (II) and iron (III) chloride, and more preferably iron chloride hexahydrate (FeCl 3 ⁇ 6H 2 O).
- the solvent may be selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol and glycerol.
- the solvent may be ethylene glycol.
- the stabilizer may be a compound having a carboxyl group.
- the stabilizer is tris-sodium citrate dihydrate (HOC (COONa) (CH 2 COONa) 2 ⁇ 2H 2 O; C 6 H 5 Na 3 O 7 And dicarboxylic poly (ethylene glycol) having a molecular weight of 500 to 50,000, preferably a molecular weight of 2000 to 8000, more preferably of 2000.
- HOC tris-sodium citrate dihydrate
- dicarboxylic poly ethylene glycol
- the reducing agent may be selected from the group consisting of sodium acetate, sodium acrylate, urea, sodium formate and ammonium acetate.
- the reducing agent may be sodium acetate.
- the iron precursor and the solvent may be mixed in a molar ratio of 1: 10 to 1: 300, preferably in a molar ratio of 1: 40 to 1: 200.
- the iron precursor and the stabilizer may be mixed in a molar ratio of 1: 0.0000013 to 1: 1, preferably in a molar ratio of 1: 0.0000013 to 1: 0.8. .
- the iron precursor and the reducing agent are in a molar ratio of 1: 1 to 1:20, preferably in a molar ratio of 1: 3 to 1:15, more preferably 1 It may be mixed in a molar ratio of 7: 7 to 1: 15.
- the polar solvent is composed of ethanol, water, methanol, acetone, liquid ammonia, ethyl acetate, ether, tetrahydrofuran, potassium hydroxide, sodium hydroxide, and dichloromethane. Can be selected from the group.
- the step of separating the synthesized superparamagnetic nanocomposites can be separated using a centrifuge or magnetic.
- the separating of the synthesized superparamagnetic nanocomposites may be performed using a method that is commonly used to separate magnetic nanoparticles using a centrifuge or magnetic.
- the step of washing the separated superparamagnetic nanocomposites with a polar solvent is polarity of the superparamagnetic nanocomposite separated in the step of separating the synthesized superparamagnetic nanocomposites.
- the polar solvent may be any one of ethanol, alcohol, liquid ammonia, acetone, methanol, chloroform, ethyl acetate, ether, tetrahydrofuran, potassium hydroxide, sodium hydroxide, dichloromethane and water.
- the washing is not limited to three washings, but the washing may be performed once to several times, and all simple modifications to the number of washings will fall within the scope of the present invention.
- the superparamagnetic nanocomposite may be prepared without the step of washing the separated superparamagnetic nanocomposite with a polar solvent
- the separated superparamagnetic nanocomposite may have high stability and uniform particle distribution as described above. It is preferable to proceed with the step of washing the superparamagnetic nanocomposite with a polar solvent.
- the washing of the separated superparamagnetic nanocomposite with a polar solvent may use any one of conventional methods.
- the step of washing the separated superparamagnetic nanocomposites with a polar solvent may proceed to the method using a centrifuge, one of the conventional methods, the superparamagnetic nanocomposites in the step of separating the synthesized superparamagnetic nanocomposites Separating and completing the washing will be within the scope of the present invention.
- the step of separating the synthesized superparamagnetic nanocomposites may be performed by separating the primary and secondary, and proceeding with the separation and washing.
- the step of washing the separated superparamagnetic nanocomposites with a polar solvent is the step of washing the separated superparamagnetic nanocomposites using an ethanol solvent and the ethanol solvent
- the superparamagnetic nanocomposite washed with water may be washed with a water solvent.
- the washing using the ethanol solvent may be advantageous in terms of properties such as surface charge, such that the prepared superparamagnetic nanocomposite is washed with an ethanol solvent which is a polar solvent that is easy to dissolve the solvent and the reducing agent.
- the step of washing the superparamagnetic nanocomposite washed with ethanol solvent using a water solvent may be advantageous in that it can be dispersed in an aqueous deionized water in order to use for the purpose of magnetic separation for biological target material detection. .
- the superparamagnetic nanocomposites may be controlled in dispersibility in an aqueous solution by the carboxylate (COO ⁇ ) group of the stabilizer.
- the superparamagnetic nanocomposite may have a diameter of 100 nm to 450 nm.
- the superparamagnetic nanocomposite may have a diameter of preferably 150 nm to 400 nm and more preferably 200 nm to 350 nm.
- the present invention provides a superparamagnetic nanocomposite prepared by the method for producing the superparamagnetic nanocomposite.
- the superparamagnetic nanocomposite may have a diameter of 100 nm to 450 nm.
- the superparamagnetic nanocomposite may have a diameter of preferably 150 nm to 400 nm and more preferably 200 nm to 350 nm.
- the superparamagnetic nanocomposite comprises a magnetic nanocrystal having a diameter of greater than 0 nm and 10 nm or less and whose surface is stabilized by a carboxylate (COO ⁇ ) group, and a plurality of magnetic nanocrystals.
- the aggregated particles may have a nanoclustered form having a diameter of 100 nm to 450 nm and have hydrophilicity dispersed in an aqueous solution.
- the superparamagnetic nanocomposites may be in nanoclustered form, preferably 150 nm to 400 nm in diameter, and more preferably in nanoclustered form, 200 nm to 350 nm.
- the magnetic nanocrystals may be Fe 3 O 4 having a diameter greater than 0 and 10 nm or less.
- the present invention includes a magnetic nanocrystal of Fe 3 O 4 having a diameter greater than 0 nm and less than or equal to 10 nm and stabilized by a carboxylate (COO ⁇ ) group, and a plurality of magnetic nanocrystals are aggregated to have a diameter of 100 nm to 450. It provides a superparamagnetic nanocomposite having a nanoclustered form of nm and having hydrophilicity dispersed in an aqueous solution.
- the superparamagnetic nanocomposite may be in a nanoclustered form with a diameter of preferably 150 nm to 400 nm and more preferably in a nanoclustered form having a diameter of 200 nm to 350 nm.
- the method of manufacturing a superparamagnetic nanocomposite according to the present invention has a uniform size and particle size distribution at high speed without high complexity and a high yield, compared to a conventional method of manufacturing magnetic nanoparticles for magnetic separation, and has high aqueous dispersion.
- the superparamagnetic nanocomposites produced by the above method can be manufactured in large quantities, and the superparamagnetic nanocomposites produced by the above method maintain superparamagnetism and have high magnetization. It can be used for the purpose of magnetic separation for the detection of biological target material.
- FIG. 1 is a schematic diagram showing a method of manufacturing a superparamagnetic nanocomposite (specifically, a superparamagnetic iron oxide nanocomposite) in the form of magnetic nanoclusters according to Examples 1 and 2.
- FIG. 1 is a schematic diagram showing a method of manufacturing a superparamagnetic nanocomposite (specifically, a superparamagnetic iron oxide nanocomposite) in the form of magnetic nanoclusters according to Examples 1 and 2.
- Figure 2 shows the results of observing the superparamagnetic nanocomposites of Example 1 and Example 2 with a scanning electron microscope.
- Figure 3 shows the results of measuring the size of the superparamagnetic nanocomposite of Example 1.
- Figure 4 shows the zeta potential measurement results of the superparamagnetic nanocomposite of Example 1.
- Figure 5 shows the results of measuring the size of the superparamagnetic nanocomposite of Example 2.
- FIG. 6 shows the zeta potential measurement results of the superparamagnetic nanocomposite of Example 2.
- Figure 7 shows the results of measuring the magnetism of the superparamagnetic nanocomposite of Example 1.
- Figure 8 shows the results of measuring the magnetism of the superparamagnetic nanocomposite of Example 2.
- Figure 9 shows the micrographs of the tube photo before and after the collection of red blood cells and the superparamagnetic nanocomposite, supernatant collected.
- the superparamagnetic nanocomposite is a single magnetic particle of several nanometers (with a diameter of more than 0 and 10 nm or less), that is, a superparamagnetic particle of 100 to 450 nanometers in which magnetic nanocrystals are agglomerated in the form of a cluster. It is meant a superparamagnetic particle of preferably 150 to 400 nanometers class, more preferably of 200 to 350 nanometers class.
- room temperature means 15 to 25 ° C., which can be most conveniently reacted by an operator without raising or lowering the temperature, but is not limited thereto. That is, the temperature may be lower or higher depending on the surrounding conditions and the environment.
- the superparamagnetism is a property that can be controlled by using a magnetic force and can be redispersed when the magnetic force is lost, so the superparamagnetic nanocomposite can be used in various fields requiring magnetic nanoparticles having superparamagnetism.
- the superparamagnetic nanocomposites (specifically, superparamagnetic iron oxide nanocomposites) in the form of magnetic nanoclusters of Example 1 were synthesized by the method shown in FIG. 1.
- the stirred mixture was placed in a Teflon tube for hydrothermal synthesis, wrapped in a stainless steel container, completely sealed, and then placed in a hydrothermal synthesizer at a temperature of 7 ° C. per minute from room temperature to 200 ° C. to maintain 200 ° C. for 8 hours to The reaction was allowed to react for 12 hours, and after reaching the highest temperature (200 ° C.), the internal pressure in the sealed synthetic tube was maintained at 1.5 to 2.5 bar.
- the synthesized compound was washed five times in 30 mL of ethanol and five times in deionized water, and dried after washing. Magnetic nanocomposites were prepared. The magnetic collection was placed on a sample of Neodymium permanent magnet, the particles were collected by collecting the particles to remove the supernatant. Synthesized particles can also be separated by centrifugation.
- the surface is stabilized by the carboxylate (COO ⁇ ) group of the tris-sodium citrate dihydrate molecule (ie, the carboxylate (COO ⁇ ) group and the Fe— group of tris-sodium citrate dihydrate molecule).
- Chemisorbing, anchoring) OH magnetic nanocrystals that is, magnetite nanocrystals are formed, and the particles are negatively charged by the carboxylate (COO ⁇ ) group of the tris-sodium citrate dihydrate molecule. It stabilizes by forming an electrostatic repulsion.
- the surface tension acts at the same time in the direction of aggregation, and the superparamagnetic nanocomposite of uniform size is formed through the balance of the electrostatic repulsion and the surface tension.
- the superparamagnetic nanocomposites (specifically, superparamagnetic iron oxide nanocomposites) in the form of magnetic nanoclusters of Example 1 were synthesized by the method shown in FIG. 1.
- the stirred mixture was placed in a Teflon tube for hydrothermal synthesis, wrapped in a stainless steel container, completely sealed, and then placed in a hydrothermal synthesizer at a temperature of 7 ° C. per minute from room temperature to 200 ° C. to maintain 200 ° C. for 8 hours to The reaction was allowed to react for 12 hours, and after reaching the highest temperature (200 ° C.), the internal pressure in the sealed synthetic tube was maintained at 1.5 to 2.5 bar.
- the composite synthesized by the hydrothermal synthesizer reaction was removed from the supernatant by magnetic capture, and then the synthesized particles were washed 5 times in 30 mL of ethanol and 5 times in deionized water, and dried after washing. Nanoparticles were prepared.
- the magnetic collection was placed on a sample of Neodymium permanent magnet, the particles were collected by collecting the particles to remove the supernatant. Synthesized particles can also be separated by centrifugation.
- the surface is stabilized by the carboxylate (COO ⁇ ) group of the PEG-diacid molecule (ie, chemisorbing and anchoring between the carboxylate (COO ⁇ ) group of the PEG-diacid molecule and Fe-OH). )) Magnetic nanocrystals, ie magnetite nanocrystals, are formed, and the particles are stabilized by forming an electrostatic repulsion with negative charges by the carboxylate (COO ⁇ ) group of the PEG-diacid molecule.
- the surface tension acts at the same time in the direction of aggregation, and the superparamagnetic nanocomposite of uniform size is formed through the balance of the electrostatic repulsion and the surface tension.
- the superparamagnetic nanocomposites of Examples 1 and 2 were observed in size and shape through a scanning electron microscope (SEM, Scanning Electron Microscope) (S-4700, Hitachi, Tokyo, Japan). Indicated.
- SEM Scanning Electron Microscope
- Figure 2 shows the results of observing the superparamagnetic nanocomposites of Example 1 and Example 2 with a scanning electron microscope.
- Example 2 As shown in FIG. 2, in the scanning electron microscope image, the aggregated structure of the nanocrystal was observed on the surface of the cluster, and the particle size of the superparamagnetic nanocomposites was 305.9 ⁇ 24.7 nm in Example 1, and 241.7 ⁇ 20.1 nm in Example 2. It was confirmed that the distribution of.
- the size, distribution and surface zeta potential of the superparamagnetic nanocomposites of Examples 1 and 2 were measured using a zeta sizer (Malvern, Model Nano ZS) using dynamic light scattering particle size analysis.
- Average hydrodynamic diameter, polydispersity index (PDI) ⁇ PDI (average of standard deviation / particle size) 2 ⁇ and surface zeta potential of the superparamagnetic nanocomposites of Examples 1 and 2 potential) was analyzed (three repeated measurements), and the results are shown in Tables 1 to 2 and FIGS. 3 to 6.
- Tables 1 and 2 show the average hydrodynamic size, PDI and surface zeta potential results of the superparamagnetic nanocomposites of Examples 1 and 2, respectively.
- Figure 3 shows the results of measuring the size of the superparamagnetic nanocomposite of Example 1
- Figure 4 shows the zeta potential measurement results of the superparamagnetic nanocomposite of Example 1
- Figure 5 is a superparamagnetic nanocomposite of Example 2
- Figure 6 shows the results of measuring the size
- Figure 6 shows the zeta potential measurement results of the superparamagnetic nanocomposite of Example 2.
- the measured PDI of the superparamagnetic nanocomposites of Examples 1 and 2 was 0-0.1 very monodisperse sample and 0.1-0.7 mid-range polydisperse according to the numerical value. ),> 0.7 sedimentation, but the PDI values of Examples 1 and 2 are 0.073 and 0.104, which corresponds to less than 0.1 to about 0.1. . In other words, it was confirmed that the superparamagnetic nanocomposites of Examples 1 and 2 had a uniform size and particle size distribution.
- the zeta potentials of the superparamagnetic nanocomposites of Examples 1 and 2 correspond to the zeta potentials in the range of ⁇ 15.1 mV and +25.3 mV inba, ⁇ 10-30 mV, respectively, which are superparamagnetic nanocomposite particles by electrostatic repulsive force. They could be judged as a range that can be well dispersed.
- the superparamagnetic nanocomposites of Examples 1 and 2 were stabilized by a carboxylate (COO ⁇ ) group, and thus the zeta potential in the range of ⁇ 10-30 mV was confirmed to be excellent in aqueous solution dispersibility.
- Example 1 was 76 emu / g
- Example 2 was 87 emu / g
- the saturation magnetization value of is shown.
- Ferromagnetic materials are not suitable for application to magnetic nanoparticle-based separation technology because they have a high residual magnetization and can be strongly aggregated when they are repeatedly affected by an external magnetic field. In general, however, it is difficult for magnetic bodies to maintain superparamagnetism at room temperature, and superpara-ferromagnetism transitions easily depend on how well the single domains, particularly magnetic and magnetic complexes of any structure, are well controlled. happenss. In the superparamagnetic nanocomposites of Examples 1 and 2 according to the present invention, even though tens of thousands of superparamagnetic nanocrystal units are clustered, the final aggregate 200-300 nm superparamagnetic nanocomposite exhibits ferromagnetism transition. It was confirmed that it maintains superparamagnetism well without causing it.
- Anti-RBC antibody anti-red blood cell antibody
- Antibody functionalization was performed on magnetic particles by the method of 1-Ethyl-3- (3-dimethylaminopropyl) -carbodiimide) / Sulfo-NHS (N-hydroxysulfosuccinimide) mediated covalent induction.
- a superparamagnetic nanocomposite 0.5 mg / 25 ⁇ L PBS-buffer (pH 7.4) functionalized with an anti-erythrocyte antibody was mixed into a 25 ⁇ L whole blood sample, reacted at room temperature for 5 minutes, and then magnetically collected for functionalization with an anti-erythrocyte antibody.
- Superparamagnetic nanocomposites were separated. Subsequently, the superparamagnetic nanocomposites functionalized with the collected anti-erythrocyte antibody and the supernatant were observed by microscopic measurement to confirm the number of erythrocytes, and the resolution (%) of erythrocytes was calculated according to Equation 1 below. 9 is shown.
- Figure 9 shows the micrographs of the tube photo before and after the collection of red blood cells and the superparamagnetic nanocomposite, supernatant collected.
- red blood cells in a left tube photograph in which a whole blood sample and a superparamagnetic nanocomposite functionalized with an anti-erythrocyte antibody are mixed are specifically captured and reacted with an antibody on the surface of the superparamagnetic nanocomposite, and are magnetized by an external magnetic field. If only the particles were separated, it was collected by the superparamagnetic nanocomposite, it was confirmed that the red whole blood appears transparent. Microscopic examination of superparamagnetic nanocomposites bound to red blood cells by the collected red blood cells and antibodies shows that red blood cells (light color) and superparamagnetic nanocomposites (relative dark black parts) are well bonded. It was confirmed that no part of the red blood cells was present separately. On the other hand, the microscopic image of the supernatant contrasted that no erythrocyte morphology was observed.
- the red blood cell resolution of the superparamagnetic nanocomposite calculated by Equation 1 was 99.5%. As a result, using magnetic particles, it was confirmed that only target red blood cells could be specifically captured and rapidly separated even in whole blood blood in which excess of the non-target immunoglobulin was present with only a short reaction time of 5 minutes.
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- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
Abstract
Description
Claims (16)
- 철전구체, 용매, 안정화제 및 환원제를 혼합하는 단계;상기 혼합하는 단계에서 혼합된 용액을 150 ~ 300℃의 온도 및 1.5 ~ 10 바(bar)의 압력 조건에서 수열 합성하여 나노클러스터화된 형태의 초상자성 나노복합체를 합성하는 단계; 및합성된 초상자성 나노복합체를 분리하는 단계를 포함하며,상기 안정화제는 카르복시기를 가지는 화합물이고,상기 초상자성 나노복합체는 0초과 10nm 이하의 직경을 가지고 카르복실레이트(COO-) 기에 의해 표면이 안정화된 자성 나노 크리스탈을 포함하며, 복수 개의 자성 나노 크리스탈이 응집되어 직경이 100 nm 내지 450 nm 인 나노클러스터화된 형태를 가지며 수용액에서 분산되는 친수성을 갖는 초상자성 나노복합체를 제조하는 방법.
- 제1항에 있어서, 상기 분리된 초상자성 나노복합체를 극성용매로 세척하는 단계를 더 포함하는 초상자성 나노복합체를 제조하는 방법.
- 제1항에 있어서, 상기 혼합하는 단계에서 혼합된 용액을 200 ~ 240℃의 온도 및 1.5 ~ 6 바(bar)의 압력 조건에서 수열 합성하여 나노클러스터화된 형태의 초상자성 나노복합체를 합성하는 것인 초상자성 나노복합체를 제조하는 방법.
- 제1항에 있어서, 상기 철전구체는 염화철육수화물(FeCl3·6H2O), 염화철(II), 염화철사수화물(II), 염화철(III) 및 질산철 구수화물(Fe(NO3)3·9H2O)로 이루어진 군에서 선택된 초상자성 나노복합체를 제조하는 방법.
- 제1항에 있어서, 상기 용매는 에틸렌 글리콜, 디 에틸렌 글리콜, 트리 에틸렌 글리콜, 테트라 에틸렌 글리콜, 디 프로필렌 글리콜 및 글리세롤로 이루어진 군에서 선택된 초상자성 나노복합체를 제조하는 방법.
- 제1항에 있어서, 상기 안정화제는 트리스-소디움 시트레이트 디하이드레이트 (HOC(COONa)(CH2COONa)2·2H2O; C6H5Na3O7 및 분자량 500 내지 50,000의 디카복실 폴리(에틸렌 글리콜)로 이루어진 군에서 선택된 초상자성 나노복합체를 제조하는 방법.
- 제1항에 있어서, 상기 환원제는 소디움 아세테이트, 소디움 아크릴레이트, 요소, 소디움 포메이트 및 암모늄 아세테이트로 이루어진 군에서 선택된 초상자성 나노복합체를 제조하는 방법.
- 제1항에 있어서, 철전구체와 용매는 1 : 10 내지 1: 300의 몰 비율로 혼합되는 것인 초상자성 나노복합체를 제조하는 방법.
- 제1항에 있어서, 철전구체와 안정화제는 1 : 0.0000013 내지 1 : 1 의 몰 비율로 혼합되는 것인 초상자성 나노복합체를 제조하는 방법.
- 제1항에 있어서, 철전구체와 환원제는 1 : 1 내지 1 : 20의 몰 비율로 혼합된 것인 초상자성 나노복합체를 제조하는 방법.
- 제2항에 있어서, 상기 극성용매는 에탄올, 물, 메탄올, 아세톤, 액체암모니아, 아세트산에틸, 에테르, 테트라하이드로퓨란, 수산화칼륨, 수산화나트륨, 및 디클로로메탄로 이루어진 군에서 선택된 초상자성 나노복합체를 제조하는 방법.
- 제2항에 있어서, 상기 분리된 초상자성 나노복합체를 극성용매로 세척하는 단계는 상기 분리된 초상자성 나노복합체를 에탄올 용매를 이용하여 세척하는 단계 및 상기 에탄올 용매로 세척된 초상자성 나노복합체를 물 용매를 이용하여 세척하는 단계로 이루어진 초상자성 나노복합체를 제조하는 방법.
- 제1항에 있어서, 상기 초상자성 나노복합체는 안정화제의 카르복실레이트(COO-) 기에 의해 수용액에서의 분산성이 조절되는 초상자성 나노복합체를 제조하는 방법.
- 제1항의 제조방법으로 제조되는 0초과 10nm 이하의 직경을 가지고 카르복실레이트(COO-) 기에 의해 표면이 안정화된 자성 나노 크리스탈을 포함하며, 복수 개의 자성 나노 크리스탈이 응집되어 직경이 100 nm 내지 450 nm 인 나노클러스터화된 형태를 가지며 수용액에서 분산되는 친수성을 갖는 초상자성 나노복합체.
- 제14항에 있어서, 상기 자성 나노 크리스탈은 0초과 10nm 이하의 직경을 가진 Fe3O4인 초상자성 나노복합체.
- 0초과 10nm 이하의 직경을 가지고 카르복실레이트(COO-) 기에 의해 표면이 안정화된 Fe3O4인 자성 나노 크리스탈을 포함하며, 복수 개의 자성 나노 크리스탈이 응집되어 직경이 100 nm 내지 450 nm인 나노클러스터화된 형태를 가지며 수용액에서 분산되는 친수성을 갖는 초상자성 나노복합체.
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| JP2018555099A JP6788686B2 (ja) | 2016-08-19 | 2017-08-11 | 超常磁性ナノ複合体の製造方法およびこれを用いて製造された超常磁性ナノ複合体 |
| EP17841647.5A EP3389062B1 (en) | 2016-08-19 | 2017-08-11 | Method for producing superparamagnetic nanocomposite and superparamagnetic nanocomposite produced using same |
| CN201780007231.7A CN108496231B (zh) | 2016-08-19 | 2017-08-11 | 制备超顺磁性纳米复合材料的方法及使用该方法制备的超顺磁性纳米复合材料 |
| US15/562,303 US10658097B2 (en) | 2016-08-19 | 2017-08-11 | Method of manufacturing superparamagnetic nanocomposite and superparamagnetic nanocomposite manufactured using the same |
| US16/852,366 US11087908B2 (en) | 2016-08-19 | 2020-04-17 | Method of manufacturing superparamagnetic nanocomposite and superparamagnetic nanocomposite manufactured using the same |
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| KR102125168B1 (ko) * | 2018-07-03 | 2020-06-22 | 한양대학교 에리카산학협력단 | 하이브리드 자성 섬유 및 그 제조방법 |
| WO2021112389A1 (ko) * | 2019-12-02 | 2021-06-10 | 주식회사 엘지화학 | 자성체, 이를 포함하는 경화성 조성물 및 상기 자성체의 제조 방법 |
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| Publication number | Publication date |
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| US11087908B2 (en) | 2021-08-10 |
| KR101729687B1 (ko) | 2017-05-22 |
| JP2019509975A (ja) | 2019-04-11 |
| CN108496231B (zh) | 2021-07-30 |
| EP3389062A4 (en) | 2019-01-23 |
| EP3389062B1 (en) | 2021-04-07 |
| JP6788686B2 (ja) | 2020-11-25 |
| US10658097B2 (en) | 2020-05-19 |
| CN108496231A (zh) | 2018-09-04 |
| EP3389062A1 (en) | 2018-10-17 |
| US20180254130A1 (en) | 2018-09-06 |
| US20200265978A1 (en) | 2020-08-20 |
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