Spiral Patterning of Au Nanoparticles on Au Nanorod Surface to Form Chiral AuNR@AuNP Helical Superstructures Templated by DNA Origami
Spiral Patterning of Au Nanoparticles on Au Nanorod Surface to Form Chiral AuNR@AuNP Helical Superstructures Templated by DNA Origami
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Au 纳米棒表面上 Au 纳米颗粒的螺旋图案形成 DNA 折纸模板的手性 AuNR@AuNP 螺旋超结构
DOI:
10.1002/adma.201606533
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发表时间:
2017-04
影响因子:
29.4
通讯作者:
Qiangbin Wang
中科院分区:
文献类型:
--
作者:
Chenqi Shen;Xiang Lan;Chenggan Zhu;Wei Zhang;Leyu Wang;Qiangbin Wang
Plasmonic motifs with precise surface recognition sites are crucial for assembling defined nanostructures with novel functionalities and properties. In this work, a unique and effective strategy is successfully developed to pattern DNA recognition sites in a helical arrangement around a gold nanorod (AuNR), and a new set of heterogeneous AuNR@AuNP plasmonic helices is fabricated by attaching complementary‐DNA‐modified gold nanoparticles (AuNPs) to the predesigned sites on the AuNR surface. AuNR is first assembled to one side of a bifacial rectangular DNA origami, where eight groups of capture strands are selectively patterned on the other side. The subsequently added link strands make the rectangular DNA origami roll up around the AuNR into a tubular shape, therefore giving birth to a chiral patterning of DNA recognition sites on the surface of AuNR. Following the hybridization with the AuNPs capped with the complementary strands to the capture strands on the DNA origami, left‐handed and right‐handed AuNR@AuNP helical superstructures are precisely formed by tuning the pattern of the recognition sites on the AuNR surface. Our strategy of nanoparticle surface patterning innovatively realizes hierarchical self‐assembly of plasmonic superstructures with tunable chiroptical responses, and will certainly broaden the horizon of bottom‐up construction of other functional nanoarchitectures with growing complexity.
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影响因子:
15
作者:
Wu, Xiaoling;Xu, Liguang;Kotov, Nicholas A.
通讯作者:
Kotov, Nicholas A.
影响因子:
17.1
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影响因子:
38.3
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