Programmable and Site‐Specific Patterning on DNA Origami Templates with Heterogeneous Condensation of Silver and Silica. Issue 47 (11th October 2021)

• Record Type: Journal Article
• Authors: Zhao, Yumeng; Zhang, Chao; Yang, Linlin; Xu, Xuemei; Xu, Rui; Ma, Qian; Tang, Qian; Yang, Yang; Han, Da
• Is Part Of: Small. Volume 17:Issue 47(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-10-11
• Subjects: condensation -- DNA nanotechnology -- metal–silica nanomaterials; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.202103877
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: DNA origami has been widely used as a modular platform for condensation of functional molecules to assemble optical, electronic, and biological components. However, the heterogeneous condensation with greater diversities in chemical composition templated with DNA origami is still challenging. Herein, a programmable deposition method is developed to precisely condense silver–silica nanohybrids on DNA origami templates. First, the site‐specific metallization of Ag is achieved by thiol group‐initiated silver reduction at the designed areas of DNA origami. Next, cysteamine is used to selectively modify the condensed Ag surface with positively charged amino groups for creating an electronically different environment for site‐specific placement of silica by a modified Stöber method. Using these strategies, customized patterning of both silver and silica on tubular and rectangular DNA origami nanostructures is successfully achieved with nanoscale spatial resolution. These findings will greatly facilitate the development of DNA nanotechnology‐based bottom‐up nanofabrication. Abstract : Here, a programmable method is developed to condense silver and silica site selectively on DNA origami patterns with nanoscale precision. It is believed that this approach could greatly facilitate the development of DNA‐based bottom‐up fabrication toward continuous miniaturization and integration of nanodevices.