Reversible plasmonic circular dichroism of Au nanorod and DNA assemblies.
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.
Laboratory for Nanomaterials, National Center for Nanoscience and Technology, No. 11 Beiyitiao, Zhongguancun, Beijing 100190, China.
Zhengtao
Z
Li
Zhening
Z
Zhu
Wenjing
W
Liu
Yunlong
Y
Zhou
Bing
B
Han
Yan
Y
Gao
Zhiyong
Z
Tang
D002942:Circular Dichroism; D004247:DNA / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry*; D013696:Temperature
D006046:Gold; D004247:DNA