Next Article in Journal
Rheological Tunability of Perovskite Precursor Solutions: From Spin Coating to Inkjet Printing Process
Next Article in Special Issue
Glucosamine Phosphate Induces AuNPs Aggregation and Fusion into Easily Functionalizable Nanowires
Previous Article in Journal
Large-Area Biomolecule Nanopatterns on Diblock Copolymer Surfaces for Cell Adhesion Studies
Previous Article in Special Issue
Facile Synthesis of the Composites of Polyaniline and TiO2 Nanoparticles Using Self-Assembly Method and Their Application in Gas Sensing
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle
Nanomaterials 2019, 9(4), 581; https://doi.org/10.3390/nano9040581

Regioselective DNA Modification and Directed Self-Assembly of Triangular Gold Nanoplates

1
Bioengineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
2
College of Food Science and Engineering, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
3
Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
*
Authors to whom correspondence should be addressed.
Received: 4 February 2019 / Revised: 11 March 2019 / Accepted: 28 March 2019 / Published: 9 April 2019
(This article belongs to the Special Issue Synthesis and Applications of Functionalized Gold Nanosystems)
  |  
PDF [2258 KB, uploaded 10 April 2019]
  |  

Abstract

As a class of emerging nanoparticles, gold nanotriangles (AuNTs) are characterized by unique structural anisotropy and plasmonic properties. The organization of AuNTs into well-defined architecture potentially promises collective properties that are difficult to produce by individual AuNTs. To date, however, the orientation-controlled self-assembly of AuNTs has been achieved with limited success. Here, we describe an effective and straightforward approach to induce directed self-assembly of AuNTs. By taking advantage of the uneven chemical reactivity of AuNT surfaces, we implement regioselective modification of the edges and the top/bottom surfaces with two different double-stranded DNA (dsDNA) sequences. By means of terminal single base pairing/unpairing, controlled assembly of the dsDNA-modified AuNTs evolves in a face-to-face or edge-to-edge manner based on blunt-end stacking interaction on an intentional region of the AuNTs, along with entropic repulsion by unpaired terminal nucleobases on the other region. This approach could be useful for achieving directed self-assembly of other anisotropic nanoparticles. View Full-Text
Keywords: DNA; gold; nanoplate; nanotriangle; regioselective modification; self-assembly DNA; gold; nanoplate; nanotriangle; regioselective modification; self-assembly
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Wang, G.; Zhang, Y.; Liang, X.; Takarada, T.; Maeda, M. Regioselective DNA Modification and Directed Self-Assembly of Triangular Gold Nanoplates. Nanomaterials 2019, 9, 581.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Nanomaterials EISSN 2079-4991 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top