Reversible Plasmonic Circular Dichroism of Au Nanorod and DNA Assemblies

被引：295
|
作者：
Li, Zhengtao [1 ]
Zhu, Zhening [1 ]
Liu, Wenjing [1 ]
Zhou, Yunlong [1 ]
Han, Bing [1 ]
Gao, Yan [1 ]
Tang, Zhiyong [1 ]
机构：
[1] Natl Ctr Nanosci & Technol, Lab Nanomat, Beijing 100190, Peoples R China
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2012年 / 134卷 / 07期
基金：
中国国家自然科学基金;
关键词：
NANOPARTICLE SUPERSTRUCTURES; OPTICAL-ACTIVITY; CHIRALITY;
D O I：
10.1021/ja209981n
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
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.
引用
收藏
页码：3322 / 3325
页数：4
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