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    • 2. 发明申请
    • MRI T1 CONTRASTING AGENT COMPRISING MANGANESE OXIDE NANOPARTICLE
    • MRI T1对比剂包含锰氧化物纳米颗粒
    • US20120114564A1
    • 2012-05-10
    • US12525276
    • 2008-01-30
    • Taeghwan HyeonKwangjin AnHyon Bin NaJunghee Lee
    • Taeghwan HyeonKwangjin AnHyon Bin NaJunghee Lee
    • A61K49/12A61K49/16C01G45/02A61K49/10A61K49/14B82Y5/00B82Y40/00
    • A61K49/08A61K49/126A61K49/1854A61K49/1857A61K49/186A61K49/1863B82Y5/00Y10T428/2982
    • The present invention relates to the use of and method for using MnO nanoparticles as MRI T1 contrasting agents which reduces T1 of tissue. More specifically, the present invention is directed to MRI T1 contrasting agent comprising MnO nanoparticle coated with a biocompatible material bound to a biologically active material such as a targeting agent, for example tumor marker etc., and methods for diagnosis and treatment of tumor etc. using said MRI T1 contrasting agent, thereby obtaining more detailed images than the conventional MRI T1-weighted images. The MRI T1 contrasting agent of the present invention allows a high resolution anatomic imaging by emphasizing T1 contrast images between tissues based on the difference of accumulation of the contrasting agent in tissues. Also, the MRI T1 contrasting agent of the present invention enables to visualize cellular distribution due to its high intracellular uptake. The MRI T1 contrasting agent of the present invention can be used for target-specific diagnosis and treatment of various diseases such as tumor etc. when targeting agents binding to disease-specific biomarkers are conjugated to the surface of nanoparticles.
    • 本发明涉及使用MnO纳米颗粒作为降低组织T1的MRI T1对比剂的用途和方法。 更具体地,本发明涉及包含结合生物活性材料如靶向剂例如肿瘤标记物等的生物相容性材料的MnO纳米颗粒的MRI T1对比剂,以及用于诊断和治疗肿瘤等的方法。 使用所述MRI T1对比剂,从而获得比常规MRI T1加权图像更详细的图像。 本发明的MRI T1对比剂基于组织中对比剂积累的差异,通过强调组​​织之间的T1对比图像来允许高分辨率解剖成像。 此外,本发明的MRI T1对比剂能够使细胞内的摄取量高,从而可视化细胞分布。 当与疾病特异性生物标志物结合的靶向剂与纳米颗粒的表面共轭时,本发明的MRI T1对比剂可以用于各种疾病如肿瘤等的靶特异性诊断和治疗。
    • 7. 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。
    • 10. 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。