Unconventional Assembly of Bimetallic Au-Ni Janus Nanoparticles on Chemically Modified Silica Spheres | |
Jia L(贾磊)1,2; Pei XW(裴小维)1; Zhou F(周峰)1; Liu WM(刘维民)1 | |
刊名 | Chemistry - A European Journal |
2014 | |
卷号 | 20期号:7页码:2065-2070 |
关键词 | nanoparticles reassembly self-assembly silica nanospheres synergistic effects |
ISSN号 | 0947-6539 |
通讯作者 | 裴小维 ; 周峰 |
英文摘要 | This paper reports that Janus AuNi nanoparticles (JANNPs) can self-assemble onto silica spheres in a novel way, which is different from that of single-component isotropic nanoparticles. JANNPs modified with octadecylamine (ODA) assemble onto catechol-modified silica spheres (SiO2OH) to form a very special core–loop complex structure and finally the core–loop assemblies link each other to form large assemblies through capillary force and the hydrophobic interaction of the alkyl chains of ODA. The nanocomposites disassemble in the presence of vanillin and oleic acid because of the breakage of the catechol–metal link. Vanillin-induced disassembly enables the JANNPs to reassemble into a core–loop structure upon ODA addition. The assembly of SiO2OH and isotropic Ni or Fe3O4 particles generates traditional core–satellite structures. This unconventional self-assembly can be attributed to the synergistic effect of Janus specificity and capillary force, which is also confirmed by the assembly of thiol-terminated silica spheres (SHSiO2) with anisotropic JANNPs, isotropic Au, and Ni nanoparticles. These results can guide the development of novel composite materials using Janus nanoparticles as the primary building blocks. |
学科主题 | 材料科学与物理化学 |
收录类别 | SCI |
资助信息 | NSFC (21125316);973 project (2013CB632300);CAS (KJZDEW-M01) |
语种 | 英语 |
WOS记录号 | WOS:000337301100033 |
公开日期 | 2014-12-02 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/6839] |
专题 | 兰州化学物理研究所_固体润滑国家重点实验室 |
作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Henan Polytech Univ, Dept Chem & Phys, Jiaozuo 454000, Peoples R China |
推荐引用方式 GB/T 7714 | Jia L,Pei XW,Zhou F,et al. Unconventional Assembly of Bimetallic Au-Ni Janus Nanoparticles on Chemically Modified Silica Spheres[J]. Chemistry - A European Journal,2014,20(7):2065-2070. |
APA | Jia L,Pei XW,Zhou F,&Liu WM.(2014).Unconventional Assembly of Bimetallic Au-Ni Janus Nanoparticles on Chemically Modified Silica Spheres.Chemistry - A European Journal,20(7),2065-2070. |
MLA | Jia L,et al."Unconventional Assembly of Bimetallic Au-Ni Janus Nanoparticles on Chemically Modified Silica Spheres".Chemistry - A European Journal 20.7(2014):2065-2070. |
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