Spontaneous Self-Assembly of Silver Nanoparticles into Lamellar Structured Silver Nanoleaves
文献类型：期刊论文
| 作者 | Wang, QB（王强斌）
|
| 刊名 | ACS NANO
 |
| 出版日期 | 2013-04 |
| 卷号 | 7期号:4页码:3053-3060 |
| 关键词 | silver nanoparticles silver nanoleaves self-assembly metamaterials lamellar nanostructures |
| 通讯作者 | Wang, QB（王强斌） |
| 英文摘要 | Uniform lamellar silver nanoleaves (AgNLs) were spontaneously assembled from 4 nm silver nanoparticles (AgNPs) with p-aminothiophenol (PATP) as mediator under mild shaking at room temperature. The compositions of the AgNLs were verified to be similar to 1 nm Ag-25 nanoclusters and PATP molecules in quinonoid model. The underlying assembly mechanism was systematically investigated and a two-step reaction process was proposed. First, the 4 nm AgNPs were quickly etched to similar to 1 nm Ag-25 nanoclusters by PATP in the form of [Ag-25(PATP)(n)](n+) (n < 12), which were then further electrostatically or covalently interconnected by PATP to form the repeated unit cells of [Ag-25(PATP)(n-1)]((n-1)+) -PATP-[Ag-25(PATP)(n-1)]((n-1)+) (abbreviated as Ag-25-PATP-Ag-25). Second, these Ag-25-PATP-Ag-25 complexes were employed as building blocks to construct lamellar AgNLs under the directions of the strong dipole-dipole interaction and the n n stacking force between the neighboring benzene rings of PATP. Different reaction parameters including the types and concentrations of ligands, solvents, reaction temperature, ionic strength, and pH, etc., were carefully studied to confirm this mechanism. Finally, the preliminary investigations of the applications for AgNLs as "molecular junctions" and SERS properties were demonstrated. We expect that this convenient and simple method can be in principle extended to other systems, or even mixture system with different types of NPs, and will provide an important avenue for designing metamaterials and exploring their physicochemical properties. |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000318143300019 |
| 公开日期 | 2014-01-15 |
| 源URL | [http://ir.sinano.ac.cn/handle/332007/1415]  |
| 专题 | 苏州纳米技术与纳米仿生研究所_纳米生物医学与安全研究部_王强斌团队 |
| 通讯作者 | Wang, QB（王强斌） |
| 推荐引用方式 GB/T 7714 | Wang, QB. Spontaneous Self-Assembly of Silver Nanoparticles into Lamellar Structured Silver Nanoleaves[J]. ACS NANO,2013,7(4):3053-3060. |
| APA | Wang, QB.(2013).Spontaneous Self-Assembly of Silver Nanoparticles into Lamellar Structured Silver Nanoleaves.ACS NANO,7(4),3053-3060. |
| MLA | Wang, QB."Spontaneous Self-Assembly of Silver Nanoparticles into Lamellar Structured Silver Nanoleaves".ACS NANO 7.4(2013):3053-3060. |
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