箭头状金纳米棒的可控合成与组装
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- 英文论文题名：Controllable synthesis and self-assembly of gold nanoarrows
- 论文作者：王茜 ; 齐利民
- 英文论文作者：Qian Wang ; Limin Qi ; Academy for Advanced Interdisciplinary Studies ; Peking University
- 年：2016
- 作者机构：北京大学前沿交叉学科研究院;
- 论文关键词：各向异性纳米粒子 ; 箭头状金纳米棒 ; 自组装 ; 超晶体
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十六分会：纳米材料合成与组装
- 语种：中文
- 分类号：O614.123;TB383.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十六分会 ; 纳米材料合成与组装
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：140k
- 原文格式：D
- 会议级别：全国
摘要
由单个纳米颗粒自组装形成的有序组装体日益受到人们的关注。各向异性纳米粒子具有不同于球形粒子和体相材料的形貌依赖的独特性能,组装之后能够得到形貌丰富的有序结构~[1,2]。以金纳米棒(GNR)为代表的各向异性金属纳米粒子具有独特的局域表面等离激元共振性质,其组装体往往能够产生诸多奇特的物理、化学性质。我们以金纳米棒为种子进行二次生长,合成得到结构复杂且结构参数可调的箭头状金纳米棒(GNA)。以单分散的GNA为纳米基元,采取体相溶剂挥发诱导的方法将其在基底上组装为新颖的二维、三维超晶体。通过调节表面活性剂和基元浓度以及调变基元结构参数,能够可控获得不同层数、不同组装方式的有序超晶结构。这种有序组装能够一步实现基于基底的纳米器件的有效构筑,便于研究各向异性金属纳米粒子超晶体的诸多性质(如表面等离激元共振耦合、表面增强拉曼散射、催化、电化学性质等)。
Ordered nanoparticle assemblies are attracting increasing attention. Among them, assemblies formed by anisotropic nanoparticles usually exhibit abundant structures and novel properties. Herein, gold nanorods are utilized as seeds for secondary growth into gold nanoarrows(GNAs). Their morphology can be fine tuned by adjusting the growth conditions. Bulk solvent evaporation was used to assemble GNAs into unusual 2D and 3D supercrystals with different layers and assembly forms on substrates. It is speculated that substrate-based nanodevices can be achieved by assembling GNAs, which may provide a promising platform for the study of many unique properties of metal supercrystals, such as localized surface plasmon resonance coupling and surface enhanced Raman scattering.
Ordered nanoparticle assemblies are attracting increasing attention. Among them, assemblies formed by anisotropic nanoparticles usually exhibit abundant structures and novel properties. Herein, gold nanorods are utilized as seeds for secondary growth into gold nanoarrows(GNAs). Their morphology can be fine tuned by adjusting the growth conditions. Bulk solvent evaporation was used to assemble GNAs into unusual 2D and 3D supercrystals with different layers and assembly forms on substrates. It is speculated that substrate-based nanodevices can be achieved by assembling GNAs, which may provide a promising platform for the study of many unique properties of metal supercrystals, such as localized surface plasmon resonance coupling and surface enhanced Raman scattering.
引文
[1]Thorkelsson,K.;Bai,P.;Xu,T.Nano Today 2015,10:48.
[2]Huang,M.H.;Thoka,S.Nano Today 2015,10:158.
[2]Huang,M.H.;Thoka,S.Nano Today 2015,10:158.