DNA‐Origami‐Based Assembly of Anisotropic Plasmonic Gold Nanostructures. Issue 23 (27th April 2017)

• Record Type: Journal Article
• Authors: 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
• Is Part Of: Small. Volume 13:Issue 23(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-04-27
• Subjects: anisotropic functionalization -- AuNRs -- DNA origami -- Raman resonance; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201603991
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract : 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. Abstract : A novel strategy is developed to anisotropically functionalize gold nanorods (AuNRs) by using a DNA‐origami‐based precise machine, which transfers essential DNA sequence configurations to the surface of the AuNRs through an intentionally designed toehold‐initiated displacement reaction. Different AuNRs products are examined via the hybridization of DNA‐AuNPs displaying distinct elements of regiospecificity, generating discrete plasmonic nanostructures with enhanced Raman resonance.