4.8 Article

DNA-Origami-Based Assembly of Anisotropic Plasmonic Gold Nanostructures

期刊

SMALL
卷 13, 期 23, 页码 -

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201603991

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资金

  1. National Natural Science Foundation of China [21475064]
  2. Natural Science Foundation of Jiangsu Province [BK20151504]
  3. Program for Changjiang Scholars and Innovative Research Team in University [IRT_15R37]
  4. Sci-Tech Support Plan of Jiangsu Province [BE2014719]
  5. Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) [YX03001]
  6. Mega-projects of Science and Technology Research [AWS13C007]
  7. NUPTSF [214175]

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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.

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