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    • 5. 发明申请
    • Surface-Modified Tantalum Oxide Nanoparticles, Preparation Method Thereof, and Contrast Medium for X-Ray Computed Tomography and Highly Dielectric Thin Film Using Same
    • 表面改性钽氧化物纳米颗粒,其制备方法和用于X射线计算机断层摄影的对比介质和使用其的高介电性薄膜
    • US20130065995A1
    • 2013-03-14
    • US13580594
    • 2011-02-22
    • Taeghwan HyeonMyoung Hwan Oh
    • Taeghwan HyeonMyoung Hwan Oh
    • C07F9/00C08L33/12C08K5/50C08K5/544C07F9/50A61K49/04
    • A61K49/0428B82Y5/00
    • The present invention relates to a surface-modified tantalum oxide nanoparticle, a method for preparation thereof, a contrast agent (medium) for X-ray computed tomography, and a highly dielectric (high-K) film using the same. In particular, the present invention is directed to a surface-modified tantalum oxide nanoparticle, a method for preparing surface-modified tantalum oxide nanoparticles, comprising: (i) adding an aqueous phase to an organic solvent which contains a surfactant, to prepare a water-in-oil microemulsion; (ii) introducing a tantalum precursor to said microemulsion; (iii) adding a surface-modifier having an organic silane group or phosphine group to a solution obtained at the step (ii); (iv) removing said organic solvent from a product obtained at the step (iii); and (v) separating surface-modified tantalum oxide nanoparticles from a mixture obtained at the step (iv), a contrast agent for X-ray computed tomography, and a highly dielectric (thin) film using the same.
    • 本发明涉及表面改性的氧化钽纳米颗粒,其制备方法,用于X射线计算机断层摄影的造影剂(介质)和使用其的高电介质(高K)膜。 特别地,本发明涉及一种表面改性的氧化钽纳米颗粒,一种制备表面改性的氧化钽纳米颗粒的方法,包括:(i)将水相加入到含有表面活性剂的有机溶剂中以制备水 油微乳液; (ii)向所述微乳液引入钽前体; (iii)向在步骤(ii)获得的溶液中加入具有有机硅烷基或膦基的表面改性剂; (iv)从步骤(iii)获得的产物中除去所述有机溶剂; 和(v)从步骤(iv)获得的混合物,用于X射线计算机断层摄影的造影剂和使用其的高电介质(薄)膜分离表面改性的氧化钽纳米颗粒。
    • 8. 发明申请
    • Method of synthesizing nanorods by reaction of metal-surfactant complexes injected using a syringe pump
    • 通过使用注射泵注射的金属 - 表面活性剂复合物的反应合成纳米棒的方法
    • US20050214190A1
    • 2005-09-29
    • US10811504
    • 2004-03-25
    • Taeghwan HyeonJongnam Park
    • Taeghwan HyeonJongnam Park
    • C01B25/08C01G9/02
    • C01G9/02B82Y30/00C01B25/08C01P2002/72C01P2004/04C01P2004/10
    • Synthetic methods for producing uniform in diameter and highly crystalline nanorods of metals, alloys, metal oxides, metal nitrides, metal pnictides or metal chalcogenides by reaction of metal-surfactant complexes injected at a constant injection rate using a syringe pump into a surfactant solution in order to induce the one-dimensional growth of the nanostructured materials, where the reaction includes thermal decomposition, reduction, oxidation, sulfidation and phosphidation, are disclosed. The steps of a typical synthetic method consist of forming metal-surfactant complexes from the reaction of metal precursors and surfactant, injecting said metal-surfactant complex into a solution containing a surfactant and a reagent at high temperature using a syringe pump at a constant injection rate, aging at high temperature, and separating as well as precipitating by adding a poor solvent, and finally retrieving the desired nanorods by centrifuging.
    • 通过使用注射泵以恒定的注射速率注射到金属 - 表面活性剂复合物中的金属 - 表面活性剂复合物按顺序生成金属,合金,金属氧化物,金属氮化物,金属硫化物或金属硫族化物的直径和高结晶纳米棒的均匀化合成方法 以诱导纳米结构材料的一维生长,其中反应包括热分解,还原,氧化,硫化和磷化。 典型的合成方法的步骤包括从金属前体和表面活性剂的反应形成金属 - 表面活性剂复合物,使用注射泵以恒定的注射速率将所述金属 - 表面活性剂复合物在高温下注入含有表面活性剂和试剂的溶液中 ,在高温下老化,通过加入不良溶剂进行分离和沉淀,最后通过离心回收所需的纳米棒。
    • 9. 发明授权
    • Surface-modified tantalum oxide nanoparticles, preparation method thereof, and contrast medium for X-ray computed tomography and highly dielectric thin film using same
    • 表面改性的氧化钽纳米粒子,其制备方法和用于X射线计算机断层摄影的造影剂和使用其的高介电性薄膜
    • US08871310B2
    • 2014-10-28
    • US13580594
    • 2011-02-22
    • Taeghwan HyeonMyoung Hwan Oh
    • Taeghwan HyeonMyoung Hwan Oh
    • B05D1/30A61K49/04B82Y5/00
    • A61K49/0428B82Y5/00
    • The present invention relates to a surface-modified tantalum oxide nanoparticle, a method for preparation thereof, a contrast agent (medium) for X-ray computed tomography, and a highly dielectric (high-κ) film using the same. In particular, the present invention is directed to a surface-modified tantalum oxide nanoparticle, a method for preparing surface-modified tantalum oxide nanoparticles, comprising: (i) adding an aqueous phase to an organic solvent which contains a surfactant, to prepare a water-in-oil microemulsion; (ii) introducing a tantalum precursor to said microemulsion; (iii) adding a surface-modifier having an organic silane group or phosphine group to a solution obtained at the step (ii); (iv) removing said organic solvent from a product obtained at the step (iii); and (v) separating surface-modified tantalum oxide nanoparticles from a mixture obtained at the step (iv), a contrast agent for X-ray computed tomography, and a highly dielectric (thin) film using the same.
    • 本发明涉及表面改性的氧化钽纳米颗粒,其制备方法,用于X射线计算机断层摄影的造影剂(介质)以及使用其的高电介质(高电影)膜。 特别地,本发明涉及一种表面改性的氧化钽纳米颗粒,一种制备表面改性的氧化钽纳米颗粒的方法,包括:(i)将水相加入到含有表面活性剂的有机溶剂中以制备水 油微乳液; (ii)向所述微乳液引入钽前体; (iii)向在步骤(ii)获得的溶液中加入具有有机硅烷基或膦基的表面改性剂; (iv)从步骤(iii)获得的产物中除去所述有机溶剂; 和(v)从步骤(iv)获得的混合物,用于X射线计算机断层摄影的造影剂和使用其的高电介质(薄)膜分离表面改性的氧化钽纳米颗粒。