Hetero-assembly of gold nanoparticles on a DNA origami template

Hetero-assembling of spherical building blocks with well-defined spatial distribution holds great significance in developing chiral nanostructures. Herein, a strategy for hetero-assembling of gold nanoparticles (AuNPs) was demonstrated using rigid bifacial DNA origami as templates. By tuning the siz...

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Bibliographic Details
Published inScience China. Chemistry Vol. 59; no. 6; pp. 730 - 734
Main Authors Chao, Jie, Zhang, Yinan, Zhu, Dan, Liu, Bing, Cui, Chengjun, Su, Shao, Fan, Chunhai, Wang, Lianhui
Format Journal Article
LanguageEnglish
Published Beijing Science China Press 01.06.2016
Springer Nature B.V
Subjects
Angles (geometry)
Assembling
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Electrophoresis
Gold
Nanoparticles
Nanostructure
Spatial distribution
Transmission electron microscopy
DNA origami
gold nanoparticles
hetero-assembly
chiral structure
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Summary:Hetero-assembling of spherical building blocks with well-defined spatial distribution holds great significance in developing chiral nanostructures. Herein, a strategy for hetero-assembling of gold nanoparticles (AuNPs) was demonstrated using rigid bifacial DNA origami as templates. By tuning the sizes and the fixed location of AuNPs on DNA origami, right-handed and left-handed AuNPs nanostructures were respectively constructed. Gel electrophoresis indicated the formation of the DNA origami- AuNPs complex and transmission electron microscopy (TEM) visually displayed the arrangement of AuNPs in these two chiral structures. The spatial configuration and 3D geometry of AuNPs were further illustrated by the stereographic TEM with tilting angles from -30° to 30°. This strategy provides a universal approach to construct the asymmetrical 3D geometries, which may have potential applications in biomimicking and nanophotonics.
ISSN:1674-7291
1869-1870
DOI:10.1007/s11426-016-5596-x