Reversible gold nanorod alignment in mechano-responsive elastomers
Reversible gold nanorod alignment in mechano-responsive elastomers
复制标题
DOI：
10.1016/j.polymer.2015.04.037
复制
发表时间：
2015-06
期刊：
影响因子：
4.6
通讯作者：
H. Pletsch;Moritz Tebbe;M. Dulle;Beate Förster;A. Fery;S. Förster;A. Greiner;S. Agarwal
中科院分区：
文献类型：
--
作者：
H. Pletsch;Moritz Tebbe;M. Dulle;Beate Förster;A. Fery;S. Förster;A. Greiner;S. Agarwal
受纳米结构的刺激控制组装需求不断增长的启发，机械响应纳米复合材料在材料应用中具有巨大的范围。本文提出了通过机械刺激提供可切换特性的掺入染料的金纳米棒（AuNR）。无步骤和可逆控制的取向AuNR对齐-因此在宏观各向异性-施加单轴膜伸长。在光学应用的背景下，可调光谱范围内的等离子体特性的实质性影响被证明。机械响应纳米复合材料具有高热胶体稳定性，通过一个简单的异相配体交换过程，其中完全覆盖的AuNR表面与疏水配体实现。
Inspired by an increasing demand for stimuli-controlled assembly of nanostructures, mechano-responsive nanocomposites are designed with tremendous scope in material applications. Providing switchable properties by means of mechanical stimulation, elastomer-incorporated gold nanorods (AuNR) are presented herein. Stepless and reversible control over the orientational AuNR alignment – and therefore over macroscopic anisotropy – is exerted by uniaxial film elongation. In context of optical applications, substantial impact on the plasmonic properties within adjustable spectral ranges is demonstrated. Mechano-responsive nanocomposites with high thermal colloidal stability are preparedviaa facile hetero-phase ligand exchange procedure where complete coverage of the AuNR surface with hydrophobic ligands is achieved.