Reversible plasmonic circular dichroism of Au nanorod and DNA assemblies
Author(s)
Li, Zhengtao
Zhu, Zhening
Liu, Wenjing
Zhou, Yunlong
Han, Bing
Gao, Yan
Tang, Zhiyong
Griffith University Author(s)
Year published
2012
Metadata
Show full item recordAbstract
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.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.
View less >
View less >
Journal Title
Journal of the American Chemical Society
Volume
134
Issue
7
Subject
Chemical sciences
Inorganic chemistry not elsewhere classified