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Issue 20, 2015
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Tunable optical activity of plasmonic dimers assembled by DNA origami

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Abstract

We investigate the optical response of gold nanorod (AuNR) dimers assembled in parallel on a DNA origami template. Plasmonic circular dichroism (CD) was found to be highly dependent on the orientation of the dimers relative to the DNA axis and the inter-rod distances. Dipole–dipole distances play a critical role in the induced plasmonic chirality. The orientation dependence of induced CD was further verified by AuNR/Au nanosphere (AuNS) heterodimers. The experimental results of the plasmonic CD agreed well with theoretical calculations.

Graphical abstract: Tunable optical activity of plasmonic dimers assembled by DNA origami

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Publication details

The article was received on 13 Mar 2015, accepted on 15 Apr 2015 and first published on 20 Apr 2015


Article type: Communication
DOI: 10.1039/C5NR01634G
Author version available: Download Author version (PDF)
Citation: Nanoscale, 2015,7, 9147-9152
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    Tunable optical activity of plasmonic dimers assembled by DNA origami

    C. Rao, Z. Wang, N. Li, W. Zhang, X. Xu and B. Ding, Nanoscale, 2015, 7, 9147
    DOI: 10.1039/C5NR01634G

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