Abstract
We demonstrate a chiral meta-molecule in the ultraviolet (UV) and visible (VIS) regions using a complex of Au nanoparticles (NPs) and rod-shaped tobacco mosaic virus (TMV). Au NPs five nm in diameter are uniformly formed on peptide-modified TMV. The peptide-modified TMV with uniform-sized Au NPs has improved dispersion in solution. A negative circular dichroism (CD) peak is produced around 540 nm, at plasmonic resonance wavelength of Au NPs. Additionally, modification of a CD peak in the UV region is observed. Attaching NPs to a virus causes the enhancement and modification of CD peaks in both the UV and VIS regions. Our results open a new avenue for the preparation of three dimensional chiral metamaterials at optical frequencies.
Original language | English |
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Pages (from-to) | 24856-24863 |
Number of pages | 8 |
Journal | Optics Express |
Volume | 20 |
Issue number | 22 |
DOIs | |
Publication status | Published - 2012 Oct 22 |
Externally published | Yes |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics