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  • Title: Gold-nanoparticle-mediated jigsaw-puzzle-like assembly of supersized plasmonic DNA origami.
    Author: Yao G, Li J, Chao J, Pei H, Liu H, Zhao Y, Shi J, Huang Q, Wang L, Huang W, Fan C.
    Journal: Angew Chem Int Ed Engl; 2015 Mar 02; 54(10):2966-9. PubMed ID: 25612825.
    Abstract:
    DNA origami has rapidly emerged as a powerful and programmable method to construct functional nanostructures. However, the size limitation of approximately 100 nm in classic DNA origami hampers its plasmonic applications. Herein, we report a jigsaw-puzzle-like assembly strategy mediated by gold nanoparticles (AuNPs) to break the size limitation of DNA origami. We demonstrated that oligonucleotide-functionalized AuNPs function as universal joint units for the one-pot assembly of parent DNA origami of triangular shape to form sub-microscale super-origami nanostructures. AuNPs anchored at predefined positions of the super-origami exhibited strong interparticle plasmonic coupling. This AuNP-mediated strategy offers new opportunities to drive macroscopic self-assembly and to fabricate well-defined nanophotonic materials and devices.
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