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. 2012 Feb 22;134(7):3322-5.
doi: 10.1021/ja209981n. Epub 2012 Feb 9.

Reversible plasmonic circular dichroism of Au nanorod and DNA assemblies

Zhengtao Li  1 , Zhening Zhu, Wenjing Liu, Yunlong Zhou, Bing Han, Yan Gao, Zhiyong Tang
Affiliations

Reversible plasmonic circular dichroism of Au nanorod and DNA assemblies

Zhengtao Li et al. J Am Chem Soc. .

Abstract

Reversible plasmonic circular dichroism (CD) responses are realized for the first time based on temperature-dependent assembly and disassembly of Au nanorod (Au NR) and DNA hybrids. Compared with the conventional UV-vis absorption spectra, the changes in both intensity and line shape of plasmonic CD signals are much more pronounced, leading to a preliminary detection limit of DNA as low as 75 nM. The mechanism and influence factors of reversible plasmonic CD responses are explored.

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