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    • 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
    • 表面修饰的氧化钛纳米粒子,其制备方法和用于X射线计算机断层的对比度介质和使用其的高介电薄膜
    • WO2011105736A3
    • 2012-02-02
    • PCT/KR2011001165
    • 2011-02-22
    • SNU R&DB FOUNDATIONHYEON TAEGHWANOH MYOUNG HWAN
    • HYEON TAEGHWANOH MYOUNG HWAN
    • A61K9/16A61K9/14A61K49/00
    • A61K49/0428B82Y5/00
    • The present invention relates to surface-modified tantalum oxide nanoparticles, a preparation method thereof, and a contrast medium for X-ray computed tomography and a highly dielectric thin film using the same. More specifically, the present invention relates to surface-modified tantalum oxide nanoparticles, a preparation method of the surface-modified tantalum oxide nanoparticles comprising the following steps: (i) adding an aqueous phase containing water to an organic solvent containing a surfactant to prepare a water-in-oil micro-emulsion; (ii) introducing a tantalum precursor to the micro-emulsion; (iii) adding a surface modifying agent containing an organic silane group or a phosphine group to the solution obtained in step (ii) to react the same; (iv) removing the organic solvent from the reaction product of step (iii); and (v) separating surface-modified tantalum oxide nanoparticles from the mixture obtained in step (iv), and a contrast medium 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。 更具体地说,本发明涉及表面改性的氧化钽纳米粒子,表面修饰的氧化钽纳米粒子的制备方法包括以下步骤:(i)在含有表面活性剂的有机溶剂中加入含水的水相以制备 油包水微乳液; (ii)将钽前体引入微乳液; (iii)向步骤(ii)中得到的溶液中加入含有有机硅烷基或膦基的表面改性剂使其反应; (iv)从步骤(iii)的反应产物中除去有机溶剂; 和(v)从步骤(iv)中获得的混合物分离表面改性的氧化钽纳米颗粒,以及用于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。
    • 8. 发明申请
    • PRODUCTION METHOD FOR NANOCRYSTALS DOPED WITH MANGANESE
    • 用锰制成的纳米晶的生产方法
    • WO2010095812A3
    • 2010-10-14
    • PCT/KR2010000066
    • 2010-01-06
    • SNU R&DB FOUNDATIONHYEON TAEGHWANYU JUNG HO
    • HYEON TAEGHWANYU JUNG HO
    • B82B3/00
    • C01B19/007B82Y30/00C01P2002/52C01P2002/72C01P2002/84C01P2002/86C01P2004/04C01P2004/64
    • The present invention relates to a method for producing metal chalcogenide nanocrystals doped with manganese ions using a precursor consisting of a metal salt which is stable in air and environmentally friendly and, more specifically, to one comprising the steps of: producing a metal-amine complex solution by mixing a manganese salt together with a metal salt other than a manganese salt in an amine-based substance selected from primary amines or secondary amines or mixtures thereof; and adding a celenourea or selenocarbamate and powdered selenium (Se) as a selenium source or else adding powdered sulphur (S) as a sulphur source to the metal-amine complex solution, and mixing and then carrying out a heat treatment. The method of the present invention is advantageous in that it allows high quality doping of impurities into the interiors of nanocrystals, it makes it possible to adjust the size and morphology of, and the extent of impurity doping in the nanocrystals, it is stable and environmentally friendly, and it makes it possible to obtain in volume nanocrystals which are doped with manganese in a single process simply by scaling up.
    • 本发明涉及使用由在空气中稳定且环境友好的金属盐组成的前体制备掺杂有锰离子的金属硫族化物纳米晶体的方法,更具体地涉及包括以下步骤的方法:制备金属 - 胺络合物 在选自伯胺或仲胺或其混合物的胺基物质中将锰盐与除锰盐以外的金属盐一起混合的溶液; 并加入作为硒源的氰尿酸酯或硒代氨基甲酸酯和硒化硒(Se),或者向金属 - 胺络合物溶液中加入作为硫源的粉末硫(S),然后进行混合并进行热处理。 本发明的方法的优点在于其允许将杂质高质量掺杂到纳米晶体的内部,这使得可以调整纳米晶体中的杂质掺杂的尺寸和形态以及其掺杂程度,它是稳定和环境的 友好的,并且可以简单地通过放大在单个工艺中获得在锰中掺杂的体积纳米晶体。