Gold nanocages: Engineering their structure for biomedical applications
文献类型：期刊论文
| 作者 | Chen, JY ; Wiley, B ; Li, ZY ; Campbell, D ; Saeki, F ; Cang, H ; Au, L ; Lee, J ; Li, XD ; Xia, YN |
| 刊名 | ADVANCED MATERIALS
 |
| 出版日期 | 2005 |
| 卷号 | 17期号:18页码:2255 |
| 关键词 | SHAPE-CONTROLLED SYNTHESIS LARGE-SCALE SYNTHESIS REPLACEMENT REACTION OPTICAL-PROPERTIES SILVER NANOPARTICLES METAL NANOSTRUCTURES POLYOL SYNTHESIS NANORODS PARTICLES NANOWIRES |
| ISSN号 | 0935-9648 |
| 通讯作者 | Xia, YN: Univ Washington, Dept Chem, Seattle, WA 98195 USA. |
| 中文摘要 | The galvanic replacement reaction between a Ag template and HAuCl4 in an aqueous solution transforms 30-200 mn Ag nanocubes into Au nanoboxes and nanocages (nanoboxes with porous walls). By controlling the molar ratio of Ag to HAuCl4, the extinction peak of resultant structures can be continuously tuned from the blue (400 nm) to the near-infrared (1200 nm) region of the electromagnetic spectrum. These hollow An nanostructures are characterized by extraordinarily large cross sections for both absorption and scattering. Optical coherence tomography measurements indicate that the 36 nm nanocage has a scattering cross-section of similar to 0.8 X 10(-15) m(2) and an absorption cross-section of similar to 7.3 X 10(-15) m(2). The absorption cross-section is more than five orders of magnitude larger than those of conventional organic dyes. Exposure of Au nanocages to a camera flash resulted in the melting and conversion of Au nanocages into spherical particles due to photothermal heating. Discrete-di poleapproximation calculations suggest that the magnitudes of both scattering and absorption cross-sections of An nanocages can be tailored by controlling their dimensions, as well as the thickness and porosity of their walls. This novel class of hollow nanostructures is expected to find use as both a contrast agent for optical imaging in early stage tumor detection and as a therapeutic agent for photothermal cancer treatment. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/38791]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Chen, JY,Wiley, B,Li, ZY,et al. Gold nanocages: Engineering their structure for biomedical applications[J]. ADVANCED MATERIALS,2005,17(18):2255. |
| APA | Chen, JY.,Wiley, B.,Li, ZY.,Campbell, D.,Saeki, F.,...&Xia, YN.(2005).Gold nanocages: Engineering their structure for biomedical applications.ADVANCED MATERIALS,17(18),2255. |
| MLA | Chen, JY,et al."Gold nanocages: Engineering their structure for biomedical applications".ADVANCED MATERIALS 17.18(2005):2255. |
入库方式： OAI收割
来源：物理研究所
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