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

页码：26835 / 26840

页数：6

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