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DNA‐Origami‐Based Assembly of Anisotropic Plasmonic Gold Nanostructures
Author(s) -
Liu Bing,
Song Chunyuan,
Zhu Dan,
Wang Xu,
Zhao Mengzhen,
Yang Yanjun,
Zhang Yinan,
Su Shao,
Shi Jiye,
Chao Jie,
Liu Huajie,
Zhao Yun,
Fan Chunhai,
Wang Lianhui
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201603991
Subject(s) - dna origami , plasmon , nanotechnology , materials science , nanostructure , dna , colloidal gold , nanoparticle , optoelectronics , genetics , biology
Precise control over the assembly of anisotropic plasmonic gold nanostructures with relative spatial directionality and sequence asymmetry remains a major challenge and offers great fundamental insight and optical application possibilities. Here, a novel strategy is developed to anisotropically functionalize gold nanorods (AuNRs) by using a DNA‐origami‐based precise machine to transfer essential DNA sequence configurations to the surface of the AuNRs through an intentionally designed toehold‐initiated displacement reaction. Different AuNR products are examined via hybridization with DNA‐AuNPs that display distinct elements of regiospecificity. These assembled anisotropic plasmonic gold nanostructures based on the DNA‐origami precise machine inherit the encoded information from the parent platform with high fidelity and show fixed orientation and bonding anisotropy, thereby generating discrete plasmonic nanostructures with enhanced Raman resonance.