作者
Maximilian J Urban, Palash K Dutta, Pengfei Wang, Xiaoyang Duan, Xibo Shen, Baoquan Ding, Yonggang Ke, Na Liu
发表日期
2016/5/4
期刊
Journal of the American Chemical Society
卷号
138
期号
17
页码范围
5495-5498
出版商
American Chemical Society
简介
We show hierarchical assembly of plasmonic toroidal metamolecules that exhibit tailored optical activity in the visible spectral range. Each metamolecule consists of four identical origami-templated helical building blocks. Such toroidal metamolecules show a stronger chiroptical response than monomers and dimers of the helical building blocks. Enantiomers of the plasmonic structures yield opposite circular dichroism spectra. Experimental results agree well with the theoretical simulations. We also show that given the circular symmetry of the structures s distinct chiroptical response along their axial orientation can be uncovered via simple spin-coating of the metamolecules on substrates. Our work provides a new strategy to create plasmonic chiral platforms with sophisticated nanoscale architectures for potential applications such as chiral sensing using chemically based assembly systems.
引用总数
20162017201820192020202120222023202462433243222181210
学术搜索中的文章
MJ Urban, PK Dutta, P Wang, X Duan, X Shen, B Ding… - Journal of the American Chemical Society, 2016