Origin of the Plasmonic Chirality of Gold Nanorod Trimers Templated by DNA Origami

被引：41
作者：
Chen, Zhong [1 ]
Choi, Chun Kit K. [2 ]
Wang, Qiangbin [3 ,4 ]
机构：
[1] Sun Yat Sen Univ, Sch Chem, Guangdong Engn Technol Res Ctr High Performance O, Minist Educ,Key Lab Polymer Composite & Funct Mat, Guangzhou 510275, Guangdong, Peoples R China
[2] Chinese Univ Hong Kong, Dept Biomed Engn, Shatin, Hong Kong, Peoples R China
[3] Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, CAS Key Lab Nanobio Interface, Div Nanobiomed, Suzhou 215123, Peoples R China
[4] Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, i Lab, Suzhou 215123, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 32期
基金：
美国国家科学基金会;
关键词：
DNA origami; plasmonic nanostructures; plasmonic chirality; AuNR dimers; AuNR trimers; TAILORED OPTICAL CHIRALITY; NANOSTRUCTURES; NANOPARTICLES; DISCRETE; NANOARCHITECTURES; ARCHITECTURES; ARRAYS;
D O I：
10.1021/acsami.8b11167
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Templated by DNA origami, plasmonic gold nanorods (AuNRs) could be assembled into complex nanostructures with strong chiroptical activities. However, it is still not clear how the plasmonic chirality of a complex nanostructure matters with its daughter structural components. Here, we rationally design and fabricate a series of AuNR trimers and their daughter AuNR dimers. Strikingly, we corroborate by circular dichroism spectroscopy that the plasmonic chirality of asymmetrical AuNR trimers is a nearly perfect summation of the chiroptical response of all their constituent dimeric components. Our results provide fundamental insight into the origin of the plasmonic chirality of complex nanostructures.
引用
收藏
页码：26835 / 26840
页数：6
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