发明名称 |
SURFACE-MODIFIED TANTALUM OXIDE NANOPARTICLES, PREPARATION METHOD THEREOF, AND CONTRAST MEDIUM FOR X-RAY COMPUTED TOMOGRAPHY AND HIGHLY DIELECTRIC THIN FILM USING SAME |
摘要 |
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. |
申请公布号 |
WO2011105736(A2) |
申请公布日期 |
2011.09.01 |
申请号 |
WO2011KR01165 |
申请日期 |
2011.02.22 |
申请人 |
SNU R&DB FOUNDATION;HYEON, TAEGHWAN;OH, MYOUNG HWAN |
发明人 |
HYEON, TAEGHWAN;OH, MYOUNG HWAN |
分类号 |
A61K9/16;A61K9/14;A61K49/00 |
主分类号 |
A61K9/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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