Selective shortening of gold nanorods: when surface functionalization dictates the reactivity of nanostructures
文献类型：期刊论文
| 作者 | Khelfa, A; Meng, J; Byun, C; Wang, GL; Nelayah, J; Ricolleau, C; Amara, H; Guesmi, H; Alloyeau, D |
| 刊名 | NANOSCALE
 |
| 出版日期 | 2020 |
| 卷号 | 12期号:44页码:22658-22667 |
| 关键词 | TOTAL-ENERGY CALCULATIONS IN-SITU NANOPARTICLES BIODEGRADATION METALS GROWTH ADSORPTION NUCLEATION NANOCUBES DYNAMICS |
| ISSN号 | 2040-3364 |
| DOI | 10.1039/d0nr06326f |
| 文献子类 | 期刊论文 |
| 英文摘要 | The selective shortening of gold nanorods (NRs) is a directional etching process that has been intensively studied by UV-Vis spectroscopy because of its direct impact on the optical response of these plasmonic nanostructures. Here, liquid-cell transmission electron microscopy is exploited to visualize this peculiar corrosion process at the nanoscale and study the impacts of reaction kinetics on the etching mechanisms. In situ imaging reveals that anisotropic etching requires a chemical environment with a low etching power to make the tips of NRs the only reaction site for the oxidation process. Then, aberration-corrected TEM and atomistic simulations were combined to demonstrate that the disparity between the reactivity of the body and the ends of NRs does not derive from their crystal structure but results from an inhomogeneous surface functionalization. In a general manner, this work highlights the necessity to consider the organic/inorganic natures of nanostructures to understand their chemical reactivity. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/33124]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Univ Paris CNRS, Lab Mat & Phenomenes Quant, Paris, France 3.UM CNRS ENSCM, Inst Charles Gerhardt Montpellier, F-34090 Montpellier, France 4.Chinese Acad Sci, Div Interfacial Water, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 5.Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 6.Univ Paris Saclay, Lab Etud Microstruct, ONERA CNRS, UMR 104, BP 72, F-92322 Chatillon, France |
| 推荐引用方式 GB/T 7714 | Khelfa, A,Meng, J,Byun, C,et al. Selective shortening of gold nanorods: when surface functionalization dictates the reactivity of nanostructures[J]. NANOSCALE,2020,12(44):22658-22667. |
| APA | Khelfa, A.,Meng, J.,Byun, C.,Wang, GL.,Nelayah, J.,...&Alloyeau, D.(2020).Selective shortening of gold nanorods: when surface functionalization dictates the reactivity of nanostructures.NANOSCALE,12(44),22658-22667. |
| MLA | Khelfa, A,et al."Selective shortening of gold nanorods: when surface functionalization dictates the reactivity of nanostructures".NANOSCALE 12.44(2020):22658-22667. |
入库方式： OAI收割
来源：上海应用物理研究所
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